A rivet is one of the simplest types of fasteners for creating permanent connections. In general, this is a rod or tubular part that has a supporting “embedded” head at one end a certain form. It is installed in the connection, as the name suggests, by the riveting method (as well as shrinkage, rolling, broaching, explosion).

Based on their shape, rivets can be divided into several main types:

• Rivets with a closing head (there are solid, hollow and semi-hollow)
• Rivets with broaches (also called tear-off or pull-out rivets)
• Threaded rivets (also called riveting nuts)

Rivets with locking head

Historically, rivets with a closing head were the first to be invented - that is why they became most widespread. These rivets have a head on one side. The second head, called the closing head, is formed using a rolling or riveting tool: riveting hammer, pliers.

According to the shape of the head, rivets with a closing head are divided into:

• Rivets with semi-countersunk head

They also differ structurally by the presence of a hole inside the rivet:

• Solid rivets - no hole
• Hollow rivets - tubular - have a through hole
• Semi-hollow rivets - for flaring - have a blind hole

Materials for rivets

Rivets with a closing head can be made from a variety of metals and alloys that lend themselves well to plastic deformation.

Most widespread received the following materials:

• Steels - mainly ductile high-boiling steels are used 03kp, 05kp, 08kp, 10kp, 15kp, 20kp
• Stainless steels - austenitic steels 12Х18Н9, 08Х18Н10, 03Х18Н11, 12Х18Н10Т
• Aluminum alloys - the most applicable alloys HELL, AD1, aluminum-magnesium alloys AMg2, AMg5, AMg5P, AMg6, alloys AMts, V94, V65, also use duralumin alloys D1, D16, D16T, D18, D18P, D19P
• Brass alloys are basically an alloy L63
• Copper - grades MT, M3

Marking of rivets by materials

Rivets can be marked on the head for subsequent identification. The marking can be convex or concave (branding).

Aluminum alloys							Steel	Copper and brass
B65	D18P	D19P	AMg5	AMts	AD1	20GA	10, 20, 12Х18Н10Т	M3, L63
no label							no label	no label

Determining the length of the rivet

Correct installation of the rivet involves creating the full shape of the closing head and the absence of any excess gaps or sagging. To install the rivet correctly, it is necessary to determine the length of the rivet body, which depends on the thickness of the materials being riveted and the type of rivet.

"Handbook of mechanical engineering designer" edited by Anuriev V.I. suggests using one universal formula for all rivet head shapes. Common sense suggests that this approach is erroneous - therefore, we will use formulas from another source: “Fundamentals of Design”, edited by P.I. Orlov, 1988.

Rivet design	Allowance "H" for rivets without gap	Allowance "H" for rivets with a gap
	H=1.2d	H≈1.2d+0.1S
	H=0.54d	H≈0.5d+0.1S
	H=0.6d	H≈0.5d+0.1S
	H=0.8d	H≈0.7d+0.1S
	H=d	H≈0.9d+0.1S
	H=1.2d	H≈1.1d+0.1S

Calculating using the formula required size allowance, you can determine the length of the rivet L , adding to the thickness of the materials being riveted S allowance value H . Then you need to select the closest rivet length from the standard range of lengths. A standard range of lengths has been approved for rivets, according to which they are produced (in mm):

• 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 45, 48, 50, 52, 55, 58, 60, 65, 70, 75, 80, 85, 90, 95, 100, 110, 120, 130, 140, 150, 160, 170, 180

Example of calculating the length of a rivet

For example, we need to rivet several sheets with a total thickness of 32 mm; We will rivet without gaps with rivets with a semicircular head Ø6 mm (1st design in the table).

d = 6 mm

S = 32 mm

H = 1.2d = 1.2 x 6 = 7.2 mm

Therefore, it is necessary to use a rivet with a shank length

L = S + H = 32 + 7.2 = 39.2 mm

We select the closest length from the standard range - this is 40 mm.

As a result, we found out that to rivet a package of sheets with a thickness of 32 mm, we need a rivet of size Ø6x40 mm.

Rivets with broach

Broached rivets are made hollow, with a head at one end; a movable expansion rod is inserted inside the rivet, which, when installed, is pulled through the rivet, expands it, forms a second closing head and tightens the sheets of material being fastened. After tightening, the rods break off or are pulled completely through the rivets.

Such rivets are often called tear-off or pull-rivets - according to the installation technology. Rivets with broach in Lately are becoming more and more popular. This happens for several reasons:

• technological ease of installation of rivets;
• it is enough to have access to installation from only one side of the structure;
• no rivet support required on the reverse side;
• cheap and compact tool for installing rivets;
• high productivity when setting rivets
• variety of rivet types

Since tear-off rivets are hollow, after installation there remains a hole inside the rivet into which you can route wires or install other fasteners - for example, screws. The diameter of the normal head of such rivets is approximately equal to two diameters of the rivet D ≈ 2d . Along with a normal head, rivets can have an enlarged head with a diameter equal to three times the diameter of the rivet D ≈ 3d.

A special type of water- and gas-tight rivets with broaching is also produced - blind or sealed rivets, after installation of which the connection becomes airtight.

Installation of rivets with broaching is carried out using a special tool - a rivet gun - a riveter. We produce mechanical manual riveters and high-performance pneumatic and battery electric riveters.

Schematic diagram installation of a rivet with a broach is shown in the video:

Materials for broach rivets

Based on the method of installing rivets with a broach, it seems logical that the rivet assembly consists of two materials, and the material of the rod must be stronger than the material of the rivet itself - otherwise the rod will open and compress the rivet before it collapses. Such rivets use either a pair different materials or materials of the same type, but with different strengths. Here are the most common pairs of materials for broach rivets:

• (in fact, the rivet is not made of aluminum, but of an aluminum-magnesium alloy AMg, which can have different percentages of magnesium (Mg): 1%; 2.5%; 3.5%; 5% - alloys, respectively AMg, AMg2, AMg3, AMg5- the higher the magnesium (Mg) content, the stronger the rivet) - denote Al/St
• (the rivet is made of aluminum-magnesium alloy AMg, and the outside is powder coated in specific color from color layout RAL) - denote Al/St 0000 , Where 0000 - four-digit layout color number RAL
• Aluminum rivet + aluminum rod (the rivet and rod are made of aluminum-magnesium alloys AMG, but with different percentages of magnesium - the rod is stronger) - indicate Al/Al
• Aluminum rivet + stainless steel rod - denote Al/A2
• (both rivet and shank are made of of stainless steel, But various brands, and the rod is stronger) - denote A2/A2 or A4/A4
• - denote Cu/St
• Copper rivet + bronze rod - denote Cu/Br
• Copper rivet + stainless steel rod - denote Cu/A2
• (rivet and rod made of steel, but of different grades and the rod is stronger) - denote St/St

Determining the length of a rivet with a broach

The length of the rivet with a broach can be determined using the following table, depending on the thickness of the materials being fastened (the manufacturer strongly does not recommend using rivets for riveting materials with a thickness less than the lower recommended limit and higher than the upper limit).

Threaded rivets

Threaded rivets, although they were invented almost simultaneously with broach rivets, became widespread only recently.

The threaded rivet is a hybrid hollow rivet and nuts, therefore the second name for such rivets is riveting nuts. In fact, there is no unity in the name - they are also called rivet nut, threaded rivet, rivet nut. This confusion with names is explained by the lack of an ISO or DIN standard on this type fasteners The design feature of riveting nuts determines their dual purpose: with their help, you can either rivet sheet materials together or simply create threaded fastening points on thin-walled structural elements. The convenience of installing rivets is due to the absence of the need for access from the reverse side of the structure - the so-called “blind installation”. During installation, the already treated surface of the part, for example, with coating or painting, is not damaged.

According to the shape of the collar (head), riveting nuts are divided into:

• with a flat cylindrical collar (normal and reduced)
• with a hidden collar (normal and reduced)

According to their design, threaded rivets are divided into open - with a through hole, and blind - closed on one side.

By shape outer surface threaded rivets are divided into:

• smooth
• corrugated
• hexagonal
• half-hexagonal

Installation, as in the case of pull rivets, is carried out using a specialized tool - pliers for riveting nuts - a riveter. We produce mechanical manual riveters and high-performance pneumatic riveters.

Materials for threaded rivets

Currently, European manufacturers produce threaded rivets from the following materials:

• Aluminum-magnesium alloys
• Galvanized steel
• Stainless steel

How to choose the length of a threaded rivet

Selection correct length Riveting is carried out depending on the type of threaded rivet and the thickness of the sheet structure on which the rivet is installed. The length of the rivet with the same thread varies depending on the type of rivet. Many types of threaded rivets come in normal length and extended length. The length of the rivet must be selected based on

Tables with sizes and parameters of rivets

Threaded blind rivet, smooth, with a hidden side normal Material: galvanized steel, aluminum

- this is the production of permanent connections using rivets used in the manufacture metal structures(trusses, beams, various types of containers and frame structures). A rivet is a cylindrical rod made of ductile metal, at one end of which there is a head, called an embed. During the riveting operation on the second side of the rod, installed in the holes of the workpieces being connected, a second rivet head is formed, which is called the closing head. The mortgage and closing heads are mainly semicircular and countersunk (Fig. 5.14). The need to use ductile metal for the manufacture of rivets is due to the fact that its heads are formed as a result of plastic deformation of the rivet rod. When making riveted joints, the rivets should be selected from the same material from which the parts to be joined are made. This prevents the appearance of galvanic couples, leading to corrosion at the point of contact between the rivet and the part. The riveting process consists of two stages - preparatory and riveting itself.

Preparatory riveting process involves drilling or punching a hole for the rivet and forming a recess in it using countersinking for the rivet and closing heads, if necessary. The actual riveting includes installing the rivet into the prepared hole, tensioning the riveted workpieces, forming the closing head, and cleaning up after riveting. Depending on the nature of the rivet joint, riveting is performed in a cold (without heating) and hot (with preheating of the rivet to a temperature of 1000 ... 1,100 ° C) method. In practice, hot riveting is used in cases where steel rivets with a diameter greater than 12 mm are used.

Types of rivets and rivet seams

Most often when installation work Types of rivets with a semicircular and countersunk head are used. Due to the fact that rivets with a countersunk head do not firmly connect the parts at the riveting site, their use is limited. This type of rivet is used only in cases where their heads, according to the operating conditions of the structure, should not protrude above its surface. Depending on the purpose and operating conditions, it is possible to use rivets with other head shapes (Fig. 5.15).

The choice of rivet sizes depends on the thickness of the parts being riveted. The diameter of the rivet should, as a rule, be equal to the total thickness of the parts being connected. The length of the rivet rod is determined taking into account the formation of the closing head, the shrinkage of the rod during the riveting process and the need to fill the gap between the rivet rod and the wall or the hole for it.

Let's consider the procedure for determining the length of the shank of rivets with countersunk (see Fig. 5.14, a) and semicircular (see Fig. 5.14, b) heads. In both cases, the length of the rivet / is determined based on the thickness of the parts being riveted S and the length /0 of the part of the rivet rod protruding from the hole above the surface of the parts to be joined. The length of the protruding part of the rod depends on the diameter of the rivet and the shape of the closing head. For rivets with a semicircular head 10 = (1.2... 1.5)d, for rivets with a countersunk head 10 = (0.8... ,2)d.

To ensure free but sufficiently tight installation of the rivet, the diameter of the hole should be slightly larger than the diameter of the rivet:

Rivet diameter, mm 2.0 2.3 2.6 3.0 3.5 4.0 5.0 6.0 7.0 8.0

Drill diameter, mm:

precise assembly... 2.1 2.4 2.7 3.1 3.6 4.1 5.2 6.2 7.2 8.2

rough assembly... 2.3 2.6 3.1 3.5 4.0 4.5 5.7 6.7 7.7 8.7

In cases where it is impossible to form a closing head in the connection, explosive rivets are used (Fig. 5.15, f). Such a rivet, filled with an explosive, is installed in the hole of the parts being connected and pressed down with light blows of a hammer in a cold state. After this, it is heated from the side of the embedding head with some kind of heating device(for example, with a soldering iron), as a result of which the substance placed in the rivet shank explodes and its end expands, forming a closing head.

For connecting thin metal sheets and parts made of non-metallic materials, tubular rivets are used (Fig. 5.15, g), the closing head of which is formed by flaring.

The place where parts are joined using rivets is called a rivet seam. Depending on the nature of the connection and its purpose, rivet seams are divided into three types: strong, dense and durable.

A strong seam is used in cases when it is necessary to obtain a connection of increased strength. As a rule, these are connections in various load-bearing structures: beams, columns, lifting structures and other similar structures.

A tight seam is used when riveting tanks and vessels for liquids, pipe connections for transporting gases and liquids under low pressure.

Strongly tight seam used to connect parts in devices and structures operating under high pressure, for example in steam boilers.

According to the relative position of the connection parts There are two types of seams: butt and overlap (Fig. 5.16, a). The parts are connected end-to-end using overlays. The connection uses one (Fig. 5.16, b) or two (Fig. 5.16, c) pads. Rivets for any type of connection can be arranged in one, two, three or more rows. Depending on the number of rows of rivets in the connection, single-, double- and multi-row rivet connections are distinguished (Fig. 5.17).

Distance between rivets in connection selected depending on the type of connection (single-row or double-row). In single-row seams, the distance between the axes of the rivets (pitch) must be equal to three diameters of the rivet, and the distance from the edge of the parts being joined to the axes of the rivets in the connection must be at least one and a half diameters. When making double-row seams, this distance should accordingly be equal to four rivet diameters and one and a half, as in a single-row connection. The distance between rows of rivets in such connections should be two diameters.

There are many different directions economic activity, in which a riveter for threaded rivets can be used. The main purpose of this tool is to reliably connect elements that have to be periodically dismantled. These can be parts of metal structures and car body, components electrical cabinets.

Types of rivets and riveters

A professional rivet tool is an expensive and unnecessary purchase for home handyman, if you take into account its power, which is unlikely to be useful for domestic purposes. If desired, instead, to solve the same problems, you can use a device made with your own hands from improvised means.

Based on the method of influencing the rivet, riveters can be classified into several groups:

• Manual. Their work is based on the principle of a lever, which exerts a force on the rivet in order to deform it. This tool looks like regular pliers or pliers. One-handed versions of riveters are designed to work with rivets with a diameter of up to 5 mm, and two-handed versions - 6.4 mm.
• Pneumatic. The work process is carried out through the use of force compressed air. Since such a riveter can only be used in conjunction with a compressor, it can be used to solve a very limited range of tasks. Modern versions of the tool are compact in size, which makes them similar to manual models and allows them to be used for work of various sizes. Pneumatic riveters are mainly used in industrial production.
• Pneumohydraulic. In them, the dismantling of the rivet is ensured by the piston of the hydraulic system, which, during movement, forces the threaded rod to move forward.
• Rechargeable. Their work is provided by the source direct current, which allows you to use them for a long time offline.

In turn, threaded rivets can also be classified. Based on the material they are made of, they can be divided into steel, copper and aluminum. Each of these varieties has its own length and diameter. It is these parameters that you need to pay attention to in choosing the most suitable type of tool. Thus, for a manual threaded riveter, it is recommended to use aluminum or copper fasteners.

Principle of operation

A riveter is a type of installation tool that allows you to connect parts together in cases where you use in the classic way Certain circumstances interfere with installation. Using rivets, you can reliably connect parts, providing them with increased resistance to various types of deformation.

The point of using rivet guns is to flatten the edge of the rivet in a special way so that it can be securely fixed in the mounting hole. Moreover, this work must be done as carefully as possible, without damaging the internal threads.

Using a riveting device, you can fasten together both metal elements and sheets of plastic in combination with other materials. When performing this type of task, it is recommended to use a small washer to evenly distribute the force applied.

The peculiarity of threaded rivets is that they allow not only to fasten several sheets of material, but also to subsequently install bolted fasteners in the place where they are located. This type of connection can also be made on the front side of an already painted wall or any other surface.

The reliability of the connection depends on various factors, not least of which is the outer diameter of the rivet. The larger the fastener, the more reliable and stable the connection between the materials will be. But there is one drawback associated with this point: installing fasteners big size much more difficult. Often this requires the use of a powerful professional tool.

Modern models of riveters can work with materials with a thickness of 0.3 to 6 mm. To connect them, you can use rivets with different types of heads, including countersunk ones.

Features of working with the tool

To quickly learn how to handle a riveter and easily perform reliable connections of elements, it is enough to learn a simple procedure for working with it:

• The first step is to select rivets of the appropriate diameter. Most often, fasteners with a diameter of 2 to 4 mm are used. When working with large-diameter rivets, you will need a specialized tool, which is best suited to a pneumatic or pneumatic-hydraulic riveter.
• IN work surface a hole is drilled taking into account the outer diameter of the rivet. When using fasteners with a countersunk head, it is often necessary to first countersink the surface, which makes the rivet invisible.
• Before work, you should install a rod with a thread of the required diameter in the rivet gun and screw a threaded rivet onto it. It is important to ensure that the rivet is securely fastened, otherwise it may come loose during installation.
• It is necessary to insert the fastener into the hole until it stops, making sure that its head is tightly adjacent to the surface of the material.
• The riveter is positioned strictly at right angles to the surface and begins to exert force on the handle. During operation, the rod will begin to move inside the tool, providing the necessary pressure to deform the fastener.
• After installing the rivet, you should unscrew the threaded rod from the socket and make sure that the rivet is seated in the hole correctly. This can be judged if there are no distortions and gaps, as well as thread deformation.

How to remove a rivet

Sometimes there are situations when the fastener was installed incorrectly or in the wrong place and needs to be removed. This can be done in several ways.

In the first case, you will need a drill with a drill slightly larger in diameter than the internal thread size. During installation of the rivet, you need to monitor the process and promptly change the drill to bigger size. When the problem is solved, the fastener will be divided into two halves - the head and the inner part.

You can also remove incorrectly installed fasteners by grinding off the head. A drill will also help in solving this problem, and when the head is destroyed, all that remains is to knock the rivet out of the seat.

Installation nuances

Before installing the fastener, special attention should be paid to choosing its length. To correctly calculate this rivet parameter, you need to add the thickness of the material and the diameter of the rivet. For example, if the cross-section of the fastener is 4 mm and the thickness of the material is 2 mm, then to make a reliable connection it is recommended to use a rivet with a diameter of 6 mm. After installation, it will “sit” securely in seat and will allow you to screw a bolt in if necessary.

It is no coincidence that the riveter is very popular, because it has such advantages as ease of use and practicality. Although home craftsmen very rarely share their impressions of practical application in everyday conditions of this instrument. In many construction stores The riveter is a rarity, not to mention the fasteners for it, which many are forced to order via the Internet.

This tool has only recently become popular among the population. Most often it is used to perform reliable installation of license plates. It is also perfect for installing fences made of sheet materials, as well as mounting electricity metering devices on thin walls of panels. This installation method has surpassed in popularity even such a common type of fastening as welding, due to its reliability. And this is not surprising, since even under conditions of high loads, if the rivets begin to fail, it will not happen to all of them at the same time.

DIY riveter

In some work situations where you have to deal with fasteners large diameter, the power of a conventional hand tool is not always enough. You can get out of this situation if you make a manual riveter with your own hands in advance, taking into account frequently encountered tasks. As a basis for this device, you can use a steel bolt of the same cross-section as the rivet.

You should hang a nut on it, and then put a small thrust ball bearing on top. This piece will help ensure that pressure is evenly distributed when the tool applies force to the rivet and will also help prevent the nut from seizing. When assembling a homemade manual riveter, be sure to put a couple of washers between the fastener and the bearing, to correctly calculate the number of which you should focus on the depth of penetration of the fastener into the material.

Installation of fasteners using a homemade rivet gun is performed according to the following algorithm:

• First, the tool must be aligned with a hole of the required diameter, and then, holding the nut with one key, unscrew the screw head with another key.
• Under the influence of the force that forces the bolt to leave the surface being fastened, the rivet will be deformed, making it easy for it to take the correct position in the seat.

This method of installing fasteners should be resorted to only when the master does not have enough time or resources to purchase a branded tool for threaded rivets. A homemade riveter has only one significant drawback - during operation, the bolt can jam inside the fastener. Most often this occurs due to excessive pressure on the tool handle or the surface of the bolt material being too soft. Therefore, it costs nothing to cut off such a thread with a harder nut.

If you have the opportunity to use lathes, you can try making an improved version of a mechanical riveter. This version of the tool looks like a bolt with threads of different diameters. A lever of a certain length must be placed in a head with a through hole so that the tool can be securely fixed. Be sure to put a wide washer between the clamping nut and the rivet.

As in the previous case, the washer is needed here in order to ensure uniform pressure distribution. The main advantage of such a homemade riveter is that the clamping nut can move along a large diameter bolt, which is more reliable in contrast to M2-M4 size fasteners, and this will prevent the occurrence of deformation.

Home craftsmen who regularly have to perform various types of household work should have a lot of different tools in their arsenal. Among them should be a riveter, with which you can create reliable connections with minimal effort.

But to ensure proper connection of the elements, it is necessary to correctly select not only the rivet tool, but also the rivets for it. After all, the manual version of the tool is able to provide a reliable connection only when using aluminum or copper rivets, which few people know about. It is also necessary to ensure that the manual riveter has sufficient power and can effectively perform its main task.

Sometimes, when problems arise with this, some home craftsmen begin to think about making this tool with their own hands. Although this approach to solving the problem that has arisen can be considered, sometimes during the installation of fasteners the bolt, which is the main working unit of a homemade riveter, can jam. Therefore, it is not recommended to use such a tool constantly.

tokar.guru

DIY riveter for threaded rivets

There are a large number of different ways to connect two metal pieces together. Welds are often used. They are quite reliable, but lead to some deformation of the material from heating, which is unacceptable in some cases. This is why rivets are required. Aircraft and other vehicle bodies are completely assembled using rivets. In addition to the usual expansion rivets, there are also threaded steel rivets. They also have wide application. The types of such consumables and the riveter for them will be discussed in this article.

Types of rivets

The connection made using rivets is permanent. The appearance of this type of joint may vary. It depends on what kind of rivets were used in the process. The appearance is determined by the conditions in which a particular connection will be operated. Most often, the connection with rivets is required to be sealed so that water or cold air did not get inside the object or room. To achieve this result, rivets are often arranged in several rows. Their installation is carried out using manual or electric tools. Manual riveters make it possible to complete a limited amount of work within a certain time frame. With power tools, volumes and quality increase.

Note! There are various attachments available for drills and screwdrivers that allow you to quickly install a rivet.

The algorithm for creating a joint with rivets comes down to choosing a place for fastening, drilling a hole and fixing the equipment. With the use of such fastening material, there are practically no restrictions on which elements can be fixed to each other. In this case, the structure of the components remains without damage. The downside for many is the labor-intensive process, which involves the use of various tools. In some cases, additional sealing of the seams is required. In terms of time, it takes a longer period of time than welding or using self-tapping screws.

Rivets differ in the method of fixation and the tool that is needed for this. Initially, the fastening material was a small cylinder of metal. To fix parts with it, it was necessary to gain access to two sides of the part. The main tool was a hammer, which was used for riveting. The most common option at the moment is the use of tubular fasteners or blind rivets. Fixation with their help is carried out by a manual or automatic riveter, which pulls out a rod with a thickened tip. The latter flares one of the parts. This does not require access from the second side.

Another option that is widely used in manufacturing today is screw or threaded fasteners. In appearance, the clamps resemble a hollow tube with a thread. To process it you will need a special riveter. A rod is mounted into it, and it itself is placed inside the rivet. After squeezing the handle, the outer part of the riveter holds the latch inside, preventing it from moving. In this case, the rod is pulled out, which compresses the rivet, increasing its diameter and locking it tightly in the hole. This installation method can be divided into two workers without much difficulty. One of them drills holes and inserts rivets, and the second crimps them with a tool.

Threaded riveter

During deformation of the fastener, the riveter's task is to maintain the internal thread. If this is not done, then the tool cannot be removed back. The thread riveter can be used not only for metal, but also for plastic workpieces. This is due to the minimal load that the fastener exerts on the material after deformation. In modern practice, manual and pneumatic riveters are used.

Kinds

Threadlockers can be found in the range of many tool manufacturers. The most common riveters with manual mechanism fixation. This is due to their relative cheapness. They apply force according to the principle of leverage. Thanks to the elongated handles and mechanism, the force from the user's muscles is transferred to the fastening element. If desired, you can assemble a riveter for threaded rivets yourself, since its mechanism is not too complicated. Among the hand-made specimens there are:

• one-handed;
• two-handed.

The first is suitable for rivets whose diameter does not exceed 5 mm, and the second for rivets with a diameter of 6.4 mm. This is related to the maximum force that can be applied to a particular tool. Pneumatic riveters are often used in manufacturing. They make it possible to increase the processing speed of parts several times. But such a device requires additional modules for normal functioning. The main one is a compressor for pumping compressed air.

Method of use

Working with such a riveter does not require special skills and abilities; it is important to simply understand the principle. The first stage is the preparatory stage. Its task is to bring the surface of parts to the required state. In order for the fixation to be reliable, the surfaces must be smooth and adjacent to each other without gaps. In some cases, you will need to use a sander or file to remove paint residue or burrs. The next step is to make a mark in the place where the hole will be located. To do this, you can use a scriber and a punch, which will create a small recess for the drill so that it does not jump out of its place.

Next, a hole is drilled. This is a critical stage, because it must be strictly perpendicular without distortions. If this requirement is not met, then it will be difficult to insert the rivet. It is important to choose the right drill. Its diameter should be slightly larger than the diameter of the rivet. If there is a need to install a rivet with a diameter of 6.4 mm, then the drill should be 6.2 mm. The length of the rivet should be several millimeters greater than the width of the parts that will be fixed. The rivet head is placed inside and the fastener is compressed. The force must be maximum for the fixation to be reliable. An overview of such a tool can be found below.

Self-assembly of the tool

There are no particular difficulties in assembling a threaded riveter with your own hands. To do this you will need a bolt and nut. The bolt thread must have such a pitch and diameter that it fits freely into the rivet. The nut is fixed to the bolt so that it does not jam during operation; you can use a small bearing, which is also placed on the bolt. The essence of use is that the bolt is placed inside the rivet. The nut is unscrewed until it secures the rivet head, after which it is necessary to begin rotating the bolt. As it passes, the rivet will compress and fix the parts. To make it easier to use the tool, you can take a bolt with an internal hex head into which you can insert a lever.

The disadvantage of such a device is the complexity of its use. In some cases, the bolt may become stuck in the fastener and will be difficult to remove. This effect occurs when the bolt is made of a soft material. A homemade threaded riveter is perfect for one-time use. If there is a need to constantly work with threaded rivets, then it’s better to get a factory tool. A video about a homemade riveter is below.

Summary

The thread riveter is definitely the right tool, if there is a need to constantly work with workpieces that must be connected without the use of a welding machine. If you need a one-time job, you shouldn’t spend money on buying a factory tool; it can be easily built from scrap materials.

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Types of rivets, characteristics, installation, applications

In the general family of fasteners, the rivet is considered one of the most reliable fastening options. It is distinguished by the possibility of forming a closed fastening bond, which determines the strength and durability of the connected structure. Another thing is that using the through fastening principle is not always technically permissible. However, there are different types rivets, differing in design and other characteristics, which allows them to be used effectively in a variety of fields.

Main characteristics of fasteners

From the point of view of choosing this hardware main characteristic is the size. Several parameters are taken into account, including the diameter of the rod. It can range from 1 to 36 mm with a length from 2 to 180 mm. However, you should not think that greater thickness is directly related to the strength of the rivet. Steel rod parts with a thickness of 10 mm can be much stronger than copper tubular elements, the diameter of which exceeds 20 mm. However, much depends on the nature of the loads applied - sometimes it is more profitable to use thin-walled tubular parts.

Models of rivets with a low semicircular head have a small range of thickness indicators - from 1 to 10 mm, and the length in this case varies from 4 to 80 mm. Products with a flat head have a thickness ranging from 2-36 mm with a length of 4-180 mm. The longest parts are semi-secret types of rivets that can be used in niches with a depth of about 200 mm.

Classification by design

There are many versions and modifications of this hardware. The standard is a spacer element, which is used in connecting loose, soft and brittle building materials. The reverse head of this rivet folds during installation, which allows the load to be distributed over a large area on the reverse side. To work with wood, petal models are used. At the time of installation, the rod opens and forms petal folds, which, in turn, provide a backstop and fixation of the material. As a rule, these are aluminum rivets that can handle lightweight panels. Multi-clamp products designed for joining materials are also interesting. different thicknesses. The formed unit in this case is universal, so it is often used where there is no clear idea of ​​the size of the workpiece. The most technologically advanced option is offered by the developers of cassette models. In this design, the fixing thrust elements can be represented by dozens of levels. In this case, only one rod will act as the load-bearing basis.

Classification by material

Most rivets are made of metal. In particular, aluminum, steel, brass and copper are used. Almost all models of this type have high requirements in terms of corrosion protection. Aluminum and copper rivets are also characterized by ductility and low weight. Steel fasteners are more often used in structures where it is necessary to ensure sufficient strength.

The use of plastic rivets is also common. They are mainly made of polyamide, which is also capable of providing strong connections. Of course, in terms of strength, this option will be inferior to metal. But if stainless steel galvanic rivets in the long term are not able to guarantee consistently high protection from moisture, then plastic is not initially involved in destructive reactions during such contacts. In addition, polyamide does not conduct electricity and interacts optimally with materials made of composites and fiberglass. Today, technologists are developing methods for hot soldering plastic rivets and fixed composite materials, which completely creates a monolithic structure.

Blind and threaded rivets

The presence of threads makes rivets similar to other hardware, but in this case the method of double-sided fixation is implemented. That is, the body of the element is inserted into the prepared hole, after which the second part of the sleeve is inserted from the other side by twisting. This method has its advantages in the form of reliability and ease of implementation, but it is not always possible to implement it. Therefore, exhaust models are more often used. If threaded rivets require twisting of an auxiliary element to ensure rigid fixation, then the pulling principle involves deformation of the structure at the end to create a stop. This may be the mentioned spacer principle, or thickening of the tubular structure, as well as other methods of deforming the tip of the rivet in order to secure it.

Installation technique

The operation is performed in several stages. First of all, a drill creates a hole along the line of which the part will be inserted. Almost all types of rivets should be installed in niches whose diameter is 10-15% greater than the thickness of the rod used. The density of occurrence in this case does not matter. The fastener is integrated into the prepared hole so that its head is located on the back side of the working surface.

At this stage, installation approaches may vary. Threaded models can be fixed with your own hands, without the use of special tools. However, steel explosive rivets or spacer hardware are deformed only with the help of special devices. Riveting is done with electric hammers or a piston hammer, it depends on the type of fastener.

Where is the rivet used?

This fastener is mainly used in the construction industry and repair work. Massive structures cannot be connected using this technology, but finishing decorative materials in the form of panels, sheets and plates are often attached in this way. The manufacturability and accuracy of fixation make it possible to use such hardware in production. For example, aluminum rivets reliably connect particleboard panels. Steel elements are used on machine-building conveyors when installing metal sheets and parts.

Conclusion

The double-sided clamping method has many advantages over other fasteners. But he also has his own shortcomings. The fact is that most of the clamps of this type are not designed for dismantling. For example, explosive types of rivets can be called disposable - in the sense that they can only be installed in one place without the possibility of reinstallation. This fact is important not so much economically as technically – as a nuance of constantly equipping the target part with hardware. It will be possible to remove the rivet only by deforming the products being connected, but even in this case, further arrangement of the rivet connection with the removed hardware will be impossible.

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Rivet |

Riveting parts is used where it is necessary to obtain permanent connections between parts. Rivets are usually made from brass, copper, aluminum and other soft metals and alloys that can be forged. And if you are planning to rivet something with your own hands, then the material in this article will be useful to you.

If necessary, you can use anything as a rivet - anything oblong or round that happens to be at hand. The main thing is to meet some conditions:

The diameter of the holes for the rivets is made 0.1-0.2 mm larger than the diameter of the rivet rod, and the protruding end of the rivet is slightly conical.

If you need to make a rivet with a countersunk head, then you need to make chamfers so that the metal rivets there.

The length of the rivet rod is taken based on the sum of the thicknesses of the parts being riveted and the protruding part of the rod necessary to form the closing head.

To give the rivet an elegant shape (we are talking about a protruding head), a special crimp is required (Figure No. 1).

Figure No. 1 – Crimping for rivets

You can buy a crimp ready-made, or you can make it yourself from a steel bar, Figure No. 2.

Figure No. 2 – Illustration of the crimp manufacturing process

Making it with your own hands is quite quick and simple, you need to lean your steel rod against the ball of the bearing and hit it with a hammer - you will get a funnel round shape, this is quite enough. You can make a recess with a simple drill, sharpened at the angle you need (sharp, blunt). It all depends on what shape you want to get the rivet head, figure No. 3.

Figure No. 3 - Examples of rivet head shapes

1 – round; 2 – rectangular; 3 – trapezoidal.

Riveting technology:

Place both halves of your pieces together. It is advisable to secure them or press them tightly together using a clamp - this is necessary for the accuracy of assembly of the product and the alignment of the holes in both halves.

Drill a hole for your workpiece, taking into account the above features.

Insert the rivet into the hole, leaning its protruding rod against the anvil and gently tap it with a hammer - in order to fix the rivet in the hole. Then lean the crimp against the protruding rod of the rivet, and hit the crimp with a hammer, giving the required shape to the head of the rivet, figure No. 4.

Figure No. 4 – Illustration of shaping the rivet head

Strive to complete this procedure in the minimum number of strokes. To do this, first the rod is upset with strong blows, then the head is shaped, and finally formed by crimping. For a countersunk head, crimping is not required - just riveting the rod is enough.

P.S.: I tried to clearly show and describe not tricky tips. I hope that at least something is useful to you. But this is not everything that can be imagined, so go ahead and study the site http://bip-mip.com/

Quite often, home craftsmen fasten together various metal connections, this is where manual riveters become very relevant, because it is with their help that the connection is made quickly, firmly, and without much physical effort.

Introduction

It should be noted that this mechanism very easy to use, and the regular model is inexpensive. It can be used to fasten any type of metal, and the principle of operation remains the same.

Of course, you can make a rivet with a hammer, but with a large amount of work it will require much more time and effort. Manual riveters make the work process faster, and the effort required for all operations is minimal.

Today, there are different types of manual riveters, each working on its own principle and having its own pros and cons. Which type of riveter is better is determined by each master himself, but several points must be taken into account, which we will consider below.

general description

Modern riveters appeared relatively recently; before that they were bulky and inconvenient for home use. But the constant work of engineers on this problem has yielded results: manual riveters have become compact, and most importantly, they reliably connect parts with each other with minimal physical effort. The device itself has become quite simple and easy to use.

It provides access to both sides for a more reliable connection. In this case, no outside help is required. The main thing you need when working with manual riveters is pre-drilled holes for rivets in the parts to be joined.

Almost anyone can cope with such work. At the same time, the price for manual riveters is low.

Types of hand tools

Today there are two types of manual riveters: pull-out and threaded, the difference in price is not big.

To answer the questions: how to choose a manual, pull-out or threaded riveter, which tool is better, you need to understand their operating principles.

When using a blind rivet gun to fasten a rivet, a certain traction force is created.

In metal blanks that will subsequently be connected to each other, you need to drill a hole whose diameter is equal to the diameter of the rivet. After this, fix the rivet on the device, insert it into the hole and squeeze the tool handle.

During operation of the blind riveter, the rivet is expanded by a special ball, which, when the handle is pressed, enters the tube.

Thus, the outer side of the rivet is flattened, which allows the parts to be connected to be firmly fixed to each other.

A threaded riveter is also suitable for home work. manual type. Its operating principle is almost the same as that of the previous mechanism. The only difference is that in a threaded riveter the ball is retracted due to the fact that the cut thread rotates.

This type of connection is more optimal for thin-walled parts, where it is quite difficult to cut threads, but this type of connection is needed.

When a threaded manual riveter is used, it is possible to screw a screw or bolt into the rivet.

In most cases, manual riveters are purchased for home use; they are still more functional and versatile, and at the same time they cost a little less than threaded tools.

Different types of drive

The most common are manual riveters, but devices with various drives are also found. They are pneumatic, pneumohydraulic, and mechanical. Of course, each type has its own price. It also depends on the manufacturer - for more well-known brands, the price will be higher accordingly.

Pneumatic and pneumohydraulic tools are mainly used in production, since their design is more complex. At home, it is better to use manual riveters. When purchased with them, they come with removable heads, which allows you to use rivets of different diameters. Also, a head of the required size, as well as rivets for a manual riveter, can be purchased in a store without any problems.

Connecting parts with a tool

As mentioned above, the most popular in everyday life is a manual type riveter. Part of this device includes sleeve and rod. Now let’s figure out how a manual pull-type riveter works.

First, the sleeve is inserted into a pre-prepared hole, after which we take a rivet gun, which draws the rod into itself. All that remains is to press the handle of the tool and the sleeve will flatten, forming a strong and reliable fastener. All this will take very little time and effort.

This device has its advantages. Firstly, you can work with it even when only one side of the workpiece is free. Also, a manual riveter can be used even while suspended, without using other additional elements.

Of course, you should not forget about the quality of the rivet itself; the reliability of the fastening also depends on this.

Manual riveter: how to use

Using hand tools is easy and does not require any special skills. A properly purchased mechanism will do this job efficiently and quickly. The price when buying a tool should not play a big role, the main thing is to choose a good quality model. This will allow you not to worry about the tightness of the connection and the failure of the tool.

You just need to drill the holes correctly so that the diameter exactly matches the diameter of the rivet itself. We have already described the work of the riveter in detail above. After work, all that remains is to process the reverse flattened side of the rivet, that is, remove the resulting excess with pliers.

Manual riveter: reviews

The Stanley MR99 riveter earned very good reviews from the craftsmen. The pins do not get stuck and fly out without outside help. Of course, not the cheapest, but it is important that it works well.

The NOVUS J 60 riveter has also been in demand on the market for a long time, this is confirmed by numerous customer reviews. Works well, no problems. But it is suitable for one-time work, since large volumes get your hands tired. Its swivel head is very popular; it makes the tool even more convenient.

The Topex riveter has proven itself very well among consumers. It is inexpensive and suitable for one-time jobs. It is very convenient that the spout can be moved 90 degrees. This makes it possible to rivet in the most inconvenient places.

Also, the GESIPA NTS rivet gun received positive feedback from customers; the price is not cheap, but the German quality does not let us down.

How does a riveter work?

A construction worker or a person involved with the loading and unloading of large metal structures and materials knows the answer to this.

And for all other people interested in the mechanism of operation of this tool, the explanation is given below.

A riveter is a mechanical tool that allows you to quickly and accurately fasten together sheets whose thickness is three millimeters.

With the same ease, it connects the profile and the corner to each other.

In order to carry out the riveting process, it is necessary to first do preparatory work.

Namely: drill a hole at the intended connection location.

In this case, both ends of this workpiece must protrude from the planes or parts being fastened. When the handle is pressed repeatedly, this part gradually flattens.

When its upper part is flattened as much as possible, the fastening on one side will already hold firmly, resting on the “thick” part.

After the riveting process is completed, the lower “tail” of the rivet part is bitten off with a special tool. You must always take into account the thickness of the parts being fastened. They need to choose the appropriate fastening size. For example, for metal sheets with thickness:

• Up to half a millimeter must be riveted with rivets with a size of 2.4 mm.
• Nine and a half centimeters – 3.2 mm.
• Twelve and a half millimeters - from 4 mm to 4.8 mm.

In this case, the hole for each different rivet must be drilled one millimeter larger than the diameter of the rivet. Accordingly, for a part with a width of 2.4 mm, a hole will be made two and a half millimeters thick, 3.2 mm - 3.3 mm, for 4 mm - 4.1 mm, for 4.8 mm - 4.9 mm .

The strength of a rivet of any size is determined not by its size, but by the quality of the metal, and the power of the resistance provided by the structural elements that were made with the help of rivets. If such pressure is high, the metal rivet gradually softens or deforms.

The operation of the tool is based on the flattening effect due to targeted pressure on a certain part of the piece (workpiece).

Rivets and working with them

An explanation of how a manual riveter works cannot be complete without considering the types of riveting tools (consumables - rivets).

There are two fundamental types of these parts: monolithic, that is, solid, and tubular.

The latter are usually called pistons.

All-metal rivets are more like just a piece of thick wire and are used only for manual view rivets.

Much later than the beginning of the use of the described one, the now more commonly used pistons appeared - the second type (inside there is soft metal that is quite easily flattened when pressed).

Most importantly, these parts are divided into two more subtypes: nut and pull-out. The latter contain two parts: a tube and an interior, the so-called poisson or rod.

From above like this simple design there is an enlarged part - the cap, which prevents the rivet from prematurely protruding or breaking. The poisson is inserted from the reverse side, that is, from the opposite side - where the head is located.

It turns out that rivets are inserted on both sides, subsequently flattened.

How does a riveter for threaded rivets work?

The principle is the same, but the peculiarity of the rivet material is that, after being screwed (hammered) into the structure, it is bitten off with a special construction tool.

And besides, you can choose any length this way.

If it comes to large volumes of rivets, you need to take the so-called professional mechanism, which allows you to make a larger number of rivets with less effort.

A slightly more complex mechanism (besides the manual one) is called a pneumatic riveter. It works using compressed air.

Pneumatic devices require the use of a compressor. There are professional mechanisms that contain a hydraulic press in their design.

This type of riveter is called pneumohydraulic. As can be seen from the definition, it works thanks to two types of mechanisms that drive the main working element.

To select a tool for making a clear rivet joint between metal parts, including sheet metal and profiles, you need to take into account the thickness of the material being fastened.

More details about the pneumohydraulic riveter are presented in the video:

Noticed a mistake? Select it and click Ctrl+Enter to let us know.

A manual riveter is a tool designed for fastening sheet materials. Most often, sheets of metal up to 3 mm thick are fastened with rivets, but you can attach a sheet of metal to a profile or corner. We have a pull-out riveter, the principle of its operation is slightly different than riveting with conventional rivets and a hammer. In this article we will look at the main types of hand tools for riveting, how to select rivets and how to use this device.

How to work with a blind riveter

First of all, you need to drill a hole through both sheets to be fastened, right through. The diameter of the hole should be the same as the diameter of the rivets. Then we “charge” the rivet and insert it through both sheets and begin to squeeze the handle (more than one squeeze will be needed). The rivet begins to flatten when the ball is completely retracted into the rivet - the tail of the rivet is bitten off. As a result, we have 2 sheets of metal riveted on both sides. In the photo below you can see the instructions in pictures.

Video - how to rivet correctly

My partner and I made a video for you on how to use a riveter. I hope it will help you understand how and what to do.

What types of riveters are there:

Regular inexpensive model

Take, for example, the cheapest option from Stayer - the very first photo. Its cost is 300 rubles. It supports all rivet diameters (2.4 mm, 3.2, 4 and 4.8 mm), so you can select the most suitable rivet diameter for the materials being fastened.

For example, thin rivets with a diameter of 2.4 mm are intended for fastening sheet material with a total thickness of up to 5 mm. Of course, there is also such a parameter for blind rivets as length. The longer the rivet, the thicker the material that can be fastened.

I bring to your attention a table of the relationship between the size of the rivets and the thickness of the material.

Riveters with a rotating “head”

It differs from the usual one in that the “head” of the riveter can be rotated 360 degrees. This is very helpful when working in hard-to-reach places, where ordinary people cannot reach. True, it costs more, about 350 rubles. We are also considering the Steyer model.

Reinforced models (two-handed)

For people who work as riveters all the time, they produce power versions.

They differ from ordinary ones in that they squeeze it with both hands, which saves significant effort. Imagine that you need to rivet 500 rivets. It will be difficult to complete such a volume of work with a regular riveter, but with a reinforced one you can rivet everything much faster and without strain. What the reinforced one looks like is in the photo below.

Professional models with extended service life

Besides household models, for home work, there are also professional ones on sale. They differ from household ones in better quality and longer service life. For example, a model from Kraftool. A regular, non-rotating model, but costs significantly more. In the photo below, the Kraftul riveter - price 400 rubles.

All riveters come with 4 replaceable fittings for different diameters rivets They are changed using a special key, which is also included in the kit.

Rivets are usually sold in small packages of 50 pieces. Rivets vary in diameter and length; the thicker and longer the rivet, the more expensive the packaging. For example:

• 3.2*6 mm - price 26 rubles
• 4*12 - cost 35 rubles
• 4.8*16 - 50 rubles

When purchasing consumables, do not forget that rivets are needed for the rivet maker, pull rivets. Otherwise, stores also sell regular ones that are riveted with a hammer.

Riveting parts is a very popular method used today in construction, production and everyday life. It is used to install such fasteners in metal elements. This is a simple tool, the working head of which has a holder into which a fastening element is inserted. A hole is drilled in the workpieces where the rivet is placed, and when the tool lever is pressed, it is flattened, securing it in the material. Everything is very simple! Someone will say why use this method if there are others for connecting metal elements, for example, welding or fastening with self-tapping screws. But they are not applicable in all cases. Here are some examples.

• It is necessary to connect metal parts without changing their structure.
• Do not heat metal or surfaces located next to the elements being connected.
• It is necessary to connect parts from different materials for which welding is not applicable.
• It is necessary to fasten hard-to-reach structural elements, and the impact of the tool is possible only from one side.
• There is a possibility of a fatigue crack appearing from part to part when they are connected.

Then they use a riveter, which helps solve all these problems. What else is good about this tool? Let's figure it out.

Advantages of joining parts with rivets

This type of fastener has been used since time immemorial; for example, it can be found in military armor. By the way, during the construction of the Eiffel Tower and the cruiser Aurora, rivets were also used, only much larger in size compared to fasteners in armor. Now such elements are used in construction, for example, when installing fences, installing frames of ventilated facades, attaching steel sheets to a profile; in production when connecting metal parts of units, machines, boiler equipment; in everyday life when carrying out repair work. Not surprising, because the riveter has so many advantages!

The tool is easy to work with

Installing rivets is a fairly simple method of joining parts compared to, for example, welding and is much safer. You just need to select a rivet of a suitable diameter and install it in the drilled hole. To get the hang of it, you only need to install a few elements!

The result is a reliable and aesthetic fastening

For example, you need to connect metal and wooden blanks. The riveter will cope with this task, and the connection will be very reliable. A rivet installed in a drilled hole firmly fixes the parts, does not deform them and does not allow fatigue cracks to propagate. The fastener rod is bitten off, and with front side The details remain with a neat cap, which looks very aesthetically pleasing and does not spoil the appearance of the product.

Minimum costs for tools and fasteners

The cost of a riveter is much lower than, for example, a welding machine. An amateur model can be purchased for up to 1000 rubles, a professional one will cost more, but will help achieve higher productivity. As for consumables, the price of rivets is low. For example, a package of 50 pieces costs about 40 rubles . For comparison, when installing a frame for a ventilated facade per 1 sq. m there are about 20 rivets - you will spend less than 20 rubles on this. And if you take a package of 1000 pieces, the fasteners will cost even less. In construction and production conditions, where large quantities of rivets have to be used, this option will be very profitable.

As you can see, rivet connections are optimal method when you need to connect metal elements, spending a minimum of money and effort. If you decide that your work requires a riveter, do not rush to buy the first model that you like. There are several types of tools: some are used in private construction, others are designed for intensive loads in production. Let's talk about each in more detail.

Types of riveters

The division of a tool occurs not only according to the “household/professional” principle, but primarily according to how it is designed. There are two main parameters by which classification is carried out.

By food type

• Manual- the simplest devices that are affordable, moreover, they can be used in any conditions: with high humidity and dust, at altitude, when there is no power supply, etc. Two-handed riveters have two handles, which are compressed with both hands to transfer force to the working head - this is necessary for deforming the rivet. This tool is designed on the lever principle, so work productivity directly depends on the effort exerted by the user. For a comfortable grip, there are rubber pads on the handles, as well as indentations for the fingers. The most versatile tools are those with a rotating head: they are suitable for working in hard-to-reach places. Models rocker type They have one handle and a scissor mechanism through which force is transmitted to the working head - to do this you need to press hard on the handle. This design is very convenient if you need to install a lot of fasteners. Most often, manual riveters are used in private construction, as well as installation teams and in small workshops where the process of installing rivets is auxiliary.
• Rechargeable- externally they look like a pistol and have a built-in battery that generates energy for the impact required when installing rivets. Therefore, the user makes less effort when working compared to a conventional riveter - you only need to press a button. Even during prolonged work, the load on your hands is not felt. Depending on the battery capacity, its charge is enough to install from several hundred to several thousand fasteners. Like all hand tools, such models are used in facilities where there is no power supply, but, like any cordless tool, it is not designed to work in conditions of high humidity and dust. This is an excellent option for use in a workshop or for installation work.
• - the most productive type of device, since the energy for installing the rivet comes from a source of compressed air - a compressor. But the design of such a tool is also more complex: in addition to the gun itself with a trigger and a working head, it contains a cylinder for compressed air and a pusher. To operate, the tool must be connected to the compressor via a hose. It is important to remember that pneumatic riveters must match the operating parameters of the compressed air source. Operating pressure and the air flow of the tool must not exceed the corresponding compressor parameters. As a rule, such models are used in production sector when, when assembling products, the installation of rivets is the main work process and occurs almost continuously. In this case, a manual model will not be suitable due to low productivity, and a battery model will not be suitable due to limited battery charge.

By type of fastener used

• For blind rivets- the most common type of instrument. A pulling force is exerted on the fastener when the tool handles are pulled together or the trigger is pulled. As a result, a riveted head is formed at the base of the element, holding it in the workpiece. The remaining rod from the rivet is discarded.
• For threaded rivets- models that are used primarily in industry. Installation of the fastener occurs by flattening it in the prepared hole, while the fastener is screwed onto the holder. The rivet itself is hollow inside and has an internal thread - thus, the hole in the metal is strengthened due to it, and it is the basis for screwing in bolts and screws.

Choose based on your own goals suitable tool. For example, if you are planning to build a fence at your dacha, you will attach the corrugated sheet to the pipes. Take a manual blind rivet gun that has two handles. If you are looking for a tool for daily work, for example, in the manufacture of ventilated facades, choose either a manual rocker-type model or a battery-powered one - it all depends on the operating conditions and the scope of work. To equip a production department or workshop, the right decision would be to purchase a pneumatic riveter, with which labor productivity will be much higher.

Pay attention to what determines the functionality of the tool and productivity. Knowing the main characteristics will help you make a successful purchase - you will select the model that best suits your needs and the specifics of the work.

Important selection options

The main characteristic is the thickness of the workpieces being fastened. Decide which metal sheets or profile you will connect - their total thickness should not exceed the permissible value of the riveter. For example, for the model it is 8.5 mm. The next parameter is the size of the rivets used. For example, the tool has 4 interchangeable attachments for working with fasteners measuring 2.4 - 4.8 mm, and 5 attachments for fasteners measuring 3.2 - 6.4 mm. These models are suitable for a wide range of jobs. If you are planning on doing one specific job that requires a specific size of fastener, you don't need as much functional model. Don't forget about the tool kit. Many manufacturers include not only replacement attachments, but also maintenance keys. The pneumatic riveter has replaceable jaws and a container for used materials, which ensures safe work - the rods fly off into the container and not towards the operator. The model comes with a case and a set of rivets to get started.

Don't have a riveter in your arsenal yet? Then it's time to buy it! Once you try it out, you will see that it is very easy to make reliable riveted connections. You can choose suitable model on our website and immediately purchase the fasteners necessary for the job. Place your order now - you will receive the product as soon as possible with delivery or you can pick it up at the nearest pickup point.

This very specific tool has a number of other names - “river gun”, “rivet gun”. Manual riveters are purchased mainly for household needs, as they are simpler and cheaper items compared to their “brothers”. However, their range is quite impressive, and the cost of individual products differs significantly - from one and a half hundred rubles to 2 - 3 thousand. Which riveter is better to buy?

The main rule when choosing any “device” is what is it for? After all, it is clear that manual models are inferior to professional ones in both versatility and performance. In other words, you need to clearly define the tasks that will have to be solved.

By the way, if you have to work frequently and use rivets of different sizes, then it is advisable to have at least 2 products in your house that are different in “parameters”. For example – one-handed model + two-handed. But if the business is on stream, it is better not to waste money on cheap products. In any case, the riveter completely pays for itself, just like...

What to focus on

Rivet material

If it is aluminum, then it is easy to work with, so it does not matter which “riveter” you choose. It is more difficult with steel, so the device should be selected more powerful.

Ease of use

Firstly, the instrument can be one- or two-handed. Naturally, the latter can create greater pressure, so it allows you to work with fasteners made of any material, different sizes. Although in some cases (for example, limited space) you can only use one-handed.

Secondly, the head design. If it is rotatable, then this creates additional convenience. Sometimes you have to rivet in difficult areas (in “inconvenient” places), and this feature of the tool is very helpful.

Third, are there interchangeable attachments for different sizes of fasteners? There is no need to comment on this.

Adaptations

Some models have a special “container” where “waste” is dumped. For example, when you have to rivet a roof or build a fence from corrugated sheets, small pieces of metal scatter to the sides. If they find themselves in the grass (sand, on the ground) around the place of work, then problems cannot be avoided, especially with children - they like to run around barefoot in the summer.

Some “home craftsmen” prefer not to think twice about which tool to purchase. If the amount of work is insignificant, buy a couple of cheap models at once. If one breaks, there is always a spare at hand. And 150-200 rubles is not that much money to go around and ask the price. Although this point of view does not suit everyone, it also has a right to exist.

There is another opinion. It’s better to buy a professional model for 700 rubles, and this will guarantee that it will last long enough. Moreover, perhaps the riveter will be needed more than once.

It is also necessary to take into account such a factor as the owner’s accuracy. We do not claim to be the author of the thought, but, nevertheless, let’s say that anything can be broken, no matter how much “it” costs. Therefore, you should not trust too much people’s reviews about a particular model, especially strangers.

Considering the above, one should not be surprised at the opinion of professionals that choosing a manual “riveter” is akin to a lottery - you cannot guess whether you will be lucky or not.

The use of rivets when joining metal sheets. Steel rivets

How to rivet a rivet - using different joints + video

Today, the most reliable option for fastening joints is one-piece, and if you have special tools on hand, you don’t have to think about the question of how to rivet a rivet. Next we will tell you exactly how such fasteners are made.

What is this fastener? Initially, historically, it was a metal rod, less often a plate. Always with a locking head on one side (a cap that limits the movement of the element in the hole) and a locking head on the other end. It was first used for the manufacture of armor, such as plate and chain mail, as well as for connecting some elements of edged and early firearms. If the embedded head is present initially, then the closing head appears as a result of the process of upsetting (riveting) or with the help of a special tool due to deformation with a pulling rod. It is logical that the upset applies to cast or stamped all-metal elements, and deformation by a rod is possible only when using hollow (tubular) blind rivets. There are also explosive and cutting options.

So, we know that the fasteners we are considering are one-piece, which often ensures high reliability. But the strength of the connection depends primarily on the material, so we will first consider the types of rivets according to this characteristic. The most common are aluminum fasteners, in many production processes, and also in a number of crafts, copper and brass rods are used. All these materials do not have a high degree of reliability and are suitable only where there are no heavy loads, for fastening decorative parts. Among other things, there are steel rivets, including those made of stainless steel; they provide a fairly strong connection and are even suitable for assembling load-bearing structures and mechanical engineering.

When installing metal parts, it is very important to use rivets made of the same material as the elements being connected.

Before using rivets, you need to know how to rivet certain parts correctly. There are many connection methods, but they are usually divided into 3 types. Durable fasteners are used exclusively where certain loads are present. Sealed, as the name implies, are needed to ensure tightness at the joints of sheets or any parts. And finally, tightly sealed ones perform both functions. It should be noted that for the second type, that is, for hermetic rivets, the embedded heads are made reinforced.




Blind rivets

The most common joining method is overlap, and it is applied not only to sheet metal, but also to parts complex shape. This option is also called single-cut. Under the influence of multidirectional loads, for example, when stretching, such a seam can easily deform. A more durable joint is a butt joint, using one or two (on both sides of the seam) overlays, but this option, also called multi-cut, makes the structure heavier and leads to greater consumption of material. Installation of rivets during fastening can be chain or staggered; the second is more reliable, but very labor-intensive.

Mortgage heads come in the most different forms. The most commonly used ones are semicircular and hidden. The former completely cover the hole, like the head of a screw, and for the latter, the channel is flared so that the head, shaped like an inverted cut cone, fits completely into the hole. In the second case, the surface of the part remains smooth, since the riveting occurs flush, and the destruction of such rivets becomes difficult. There are also semi-flush form factors (with a small rounded convex), flat, flat-conical, conical and oval.

The most commonly used today are pull-out riveting elements, which are especially convenient if you need to attach a part to a surface the opposite side of which is inaccessible. They are a tube with a flaring at one of the ends (analogous to a mounting head), in the channel of which there passes a rod with a cap at the flat end of the riveting. On the flared side, a large part of the rod is extended, with which the tool clamp engages, for subsequent pulling through the tube. Its straight end is crushed by the head of the rod and forms a closing head.




Rivets for metal

However, it should be taken into account that when connecting two parts with a blind rivet, its channel also expands, so the edges of the holes must be strong and not subject to deformation. Therefore, to fasten plates made of a fairly soft material, be it plastic or aluminum, inserted steel bushings or washers should be used on both sides of the connecting parts. The same applies to connections that must be movable, hinged; they can also be used in combination with bushing washers, and their length must exceed the total thickness of the plates being fastened.

Unlike pull-out elements, conventional cast or stamped riveting elements must be installed using a certain amount of force applied to the closing end. This can be pressing or targeted blows to flatten the end of the rod coming out of the hole. The second option is most reminiscent of forging, especially since it is performed cold or hot. If the thickness of the riveting does not exceed 1 centimeter, you can use a cold forging of the closing head. If the diameter is more than 10 millimeters, then the fastening element must be heated to facilitate flattening of its end.




Rivet tool

As a rule, before hot riveting a rivet, it is heated in a forge, after which it is installed in the hole and a flat closing cap is made with several strong blows. In this case, there should be an anvil with a hole for the mounting head located below. For the cold method, a special tool is used - a striker with a semicircular hole, with the help of which an even hemisphere is formed by deforming the end coming out of the hole within the recess. Forging with a regular hammer gives the same result if you hit it on the end, directing the blows slightly sideways, from the center to the edges, but such a head will be less accurate.

As we have already said, the type of connection under consideration is one-piece, however, if you still need to disassemble the structure, the parts of which are riveted together, you can use several different methods. The most common one, which is usually applied to pull-out, explosive and split types of fasteners, as well as where countersunk heads are used, is drilling. To do this, a drill corresponding to the estimated or precisely known diameter of the hole is installed exactly in the center of the embedded or closing head, after which a hole is made to the required depth or a through channel. After this, with a few precise blows you can easily knock out the rivet.




Rivet Removal Tool

The second method is somewhat labor-intensive, however, it is quite effective for heads that are clearly visible above the surface, that is, for semicircular and conical ones. You will need a special chisel, shaped like a chisel, with which you need to cut off the cap, delivering sharp and strong blows to the back end of the handle. A sharpened chisel may also work, but this tool is recommended only for small-diameter rivets. Fasteners with a rod of about 1 centimeter or more are very difficult to cut in this way.

The easiest method for removing rivets with protruding heads is to use a corner grinding machine, colloquially referred to as a grinder. It is best to install a cutting disc on it for this purpose, and, moving it from the side to the head, carefully cut it off. If there is a possibility of damaging the surface of the part from which the connection is being removed, it is recommended to use a coarse grinding disc, with which the head is simply carefully ground down to the base. Next, by installing any sufficiently sharp tool, for example, a punch, you can easily knock the rivet rod out of the hole with a strong blow of a hammer.

tutmet.ru

Rivets. Kinds. Job. Application. Choose. Peculiarities

Rivets are a fastening system that is used to connect two or more parts. They are inserted into pre-made holes in the workpieces, arranged in one line. The fastener is a round rod, which, as a result of deformation, tightly covers the walls of the holes and is held in them due to friction.

Basic properties of rivets

A rivet provides a more secure connection than a screw or screw. At the same time, it takes up a minimum of space, without protruding from the workpiece with a large head, which is the case with bolts. The main advantage of such fasteners is its low cost and high installation speed. Rivets are used in cases where the workpieces are not planned to be separated. Once the rivet is seated, it is no longer possible to disassemble the connection without drilling.

An important advantage of using rivets is their resistance to vibration. If, for example, threaded connection with constant shaking, it can weaken because the screws, nuts or bolts unscrew, but the rivet does not have such a drawback. It gets stuck in tightly and doesn't come out. If the connection is subjected to a large mechanical load of tearing or shearing, then the metal of the riveting can only tear or damage the parts themselves, but it will not come out just like that.

Rivets are a popular fastening element, so it's no surprise that they come in a fairly wide range. All existing structures can be divided into two groups - cold and hot riveting. Cold ones are made from softer and more ductile metals, which are relatively easily deformed to take the required shape. A hot-type rivet is made of hard steel, so as a result of the pressure created, it practically does not change its shape without preheating. It provides a more reliable connection, but may not always be used. This type used in cases where heating will not damage the parts. In particular, such fasteners are used in shipbuilding and machine tool building.

Types of rivets

There are quite a few types of rivets. Each of them has its own advantages and is intended for use in certain cases. Fasteners differ from each other not only in the installation method, but also in the load they can withstand.

In addition to classifying rivets according to their installation temperature, they are also divided into three groups according to design features:

• Ordinary.
• Exhaust with a tail.
• Threaded.

Each variety is intended for specific purpose, so it’s impossible to say that any group is better.

Regular

The regular ones appeared first. They are easy to recognize because they are shaped like a mushroom. Their metal rod is decorated with a wide cap. Such rivets are considered one of the most durable, but difficult to install. This type of fastener can only be used if it is necessary to connect two elements with the ability to install riveting through them. That is, a fungus should remain at one end of the connection, and the main fastener rod should extend out of the road by at least a few millimeters.

In order to connect two workpieces, it is necessary to rest a solid metal object against the head of the riveting and, with soft blows on its rod, flatten the material, forming a semblance of the existing head. Thus, a strong connection is ensured not only by internal friction in the holes, but also by external pressure that is created between the factory and the created cap.

Exhaust

Blind rivets are used in cases where it is necessary to connect two metal sheets. They allow for reliable fixation of workpieces, even when only one side of them is accessible. To work with them, a special pneumatic or mechanical gun is used. There are also screwdriver attachments that also allow you to work with such fasteners. The rivet itself is a long metal rod, at the end of which there is a tubular-type aluminum sleeve. Other soft metal may also be used.

When the steel rod is pulled out, the sleeve is deformed because there is a small cap at the end that prevents it from coming out. As a result of the pressure created, the sleeve fits tightly to the entire surface of the hole. In order to make a quality connection, it is necessary to rest the end of the rivet gun against the parts being connected. This is the key to success. The steel tail itself, which is retracted by the gun, can break off, since it has special notches to weaken the strength, or it completely comes out of the sleeve.

The blind type of rivets is most often used because it provides easy installation, and the gun for the job is relatively cheap. An important advantage in favor of such fasteners is the fact that it can connect a thin and thick part, even if the height of the sleeve is less than the total thickness of the workpieces. By simply inserting the rivet and starting to tighten the tail, you can create just enough deformation to achieve the high friction needed to hold the parts in place. Of course, the reliability of such a connection will not be as high as when using a full-fledged through installation.

Threaded

The threaded rivet is the most expensive. The fastener itself is a hollow sleeve, inside of which a thread is cut. The sleeve is directly inserted into the prepared hole of the parts to be connected, after which the rod is screwed inward. After this, it breaks out towards the supporting surface from which it was twisted. In this case, the sleeve begins to crumple, as in the case of an exhaust sleeve. Once the required connection quality is achieved, the rod is simply turned out.

Such sleeves are usually made of aluminum, but they are also available in copper and brass. The main disadvantage of such fasteners is its high cost. Also, in order to achieve a high-quality connection, it is important to observe the direction of pulling the rod at 90 degrees. In this regard, the work is best done with a special gun, but it is quite possible to get by with a bolt and nut.

The main advantage of such rivets is minimal trauma. With conventional rivets, there is always a risk of injury from the hammer. When working with the suction type, the gun may slip and cause injury. Screw rivets provide secure fixation. Such fasteners are usually used in mechanical engineering, as well as in the manufacture of housings for household electrical appliances. It allows you to fasten a thick rivet, the diameter of which is significantly higher than in a conventional rivet.

How to choose the diameter and length of the rivet

In order for the connection to be reliable and visually attractive, it is important to select the correct fastener parameters:

• Diameter.
• Length.
• Material.

First of all, you should pay attention to the material. Aluminum rivets are used to connect parts that are not susceptible to rust. They are not only resistant to corrosion, but also have complete good indicator strength. Brass fasteners are used for fixing grounding on panels, as well as in other areas where it is necessary to ensure the installation of conductive elements.

Stainless steel rivets are commonly used in equipment used in the food or chemical industries that are subject to severe pressure. This connection is not afraid of corrosion, and at the same time provides the maximum degree of fixation. Copper rivets are commonly used for copper roofing. Using fasteners made of other materials for such purposes can lead to oxidation, which shortens the service life of the roof.

The next important indicator is the length of the fastener. If you choose a rivet that is too short, the resulting connection will be unreliable. If you take an excessively long rod, the resulting deformation will result in a sloppy fungus that will ruin the appearance of the products. If an exhaust sleeve is used, this can lead to early tearing out of the tail, which will create an unreliable connection. Ideally, use a rivet whose length is 20% higher than the thickness of the elements being connected tightly to each other. This allows you to get a perfect head on the reverse side, which will securely hold the parts together with the factory head.

Also important is the ratio of the thickness of the rivet to the diameter of the prepared hole. It should be only slightly smaller to ensure easy insertion of the rod. If the difference is too large, the resulting gap will not be filled tightly enough, which will create minimal friction. As a result, such a connection will be unreliable and will break out even under light load.

If it is necessary to achieve a reliable connection, you need to use rivets of the largest possible diameter, as far as the material that is being connected allows. If you don’t have such fasteners at hand, you can get by with thinner ones, but use several rivets located close to each other.

In the event that you need to connect materials using rivets that are not able to withstand the load that is created during deformation, you can use a trick. To do this, you need to put a wide washer on the back side of the sleeve, which will be deformed. As a result, the crushed tip will not be able to pass through it, so it will begin to press it like a vice, pulling it towards its fungus. This will allow you to create a completely reliable fixation without breaking through soft material. This method is used to fix polycarbonate and plywood.

Related topics:

tehpribory.ru

Threaded rivets - operating principle and instructions for use

Bonding of metal (and other) parts is carried out using a variety of methods. Welding machine it is not always possible to use (for example, in a situation with plastics) or impractical, as well as cutting threads for screws or bolts with preliminary drilling of the material. Special threaded rivets have virtually no restrictions in their use and provide reliable fixation at the joint. What kind of products these are and what is their feature is the topic of this article.

In fact, it is a hybrid of a traditional rivet (“hammer”) and a threaded fastener. Do not confuse such products with exhaust hoods!

Advantages of threaded rivets

• Simple installation technology.
• Possibility of reliable fastening of parts made of materials of increased fragility or low thickness (for example, sheet metal). The threaded rivet practically does not cause their deformation.
• If the total thickness of the connected samples exceeds the length of the fastening element, then the so-called one-sided fixation is performed, without a through passage. At the same time, the quality of bonding does not deteriorate.

Operating principle

A reliable connection at the installation site is ensured by a thread, which is located on the inside in nut samples, and on the inside in bolt samples. outer surface crushed part.

Types of threaded rivets

The assortment is so large that listing it in full is both impossible and makes no sense. Knowing what types of threaded rivets there are, it is easy to determine what exactly is needed for specific purposes.

According to the material of manufacture

• Copper.
• Aluminum.

Products made of non-ferrous metals are used in cases where the aesthetic component comes to the fore. Therefore, such rivets are used mainly for decoration.

• Steel.
• Made from stainless steel.

These samples provide greater joint strength and increased corrosion resistance.

By head type

• Flat.
• Secret.

By type of thread

• Nut (M4 – 8) – permanent connection. It is advisable to use when it is impossible to access the back side of the part or in conditions of limited movement.
• Screw (M3 – 16) – collapsible type.

According to the profile of the leg

• Round.
• Hexagonal (to prevent rotation in the seat).



By type of pile

• Open or closed.
• Secret.
• Small or large.

By purpose

• Electrically conductive.
• With increased force (or pressing, or stretching).
• For highly leak-tight connections.
• With an enlarged head.
• With inch thread.
• With tags (allow for visual identification).
• With vibration isolation.

This list of varieties according to the specific application can be continued, but it is already clear that the industry produces threaded rivets for literally all occasions.

Specifics of working with fasteners

In principle, it is not much different from installing conventional rivets “under a hammer”.

Algorithm of actions for a rivet nut:

• Drilling a hole in the material.
• Installing a threaded rivet into a special tool.
• Placement in place (in the hole).
• Squeezing (compression) of the fastener.



For bolted:

Application

Basically, anywhere. As already stated, there are no restrictions. The main thing is to choose the right type and size. It is especially convenient to use threaded rivets to connect products, after installing them in place, access to the reverse side will be difficult or impossible.

For example, anyone who has done electrical installation work in power (signal) cabinets knows how difficult it is sometimes to dismantle a panel if the nut screwed onto the bolt (screw) on the “other side” turns.

Price

The price for such products is usually indicated for 1,000 pieces. Minimum - approximately 1,446 rubles (M4; 10 mm; for connecting parts with a thickness of 0.5 to 3 mm; steel).

The cost of riveters for threaded fasteners starts from 3,050 rubles ( manual model).



ismith.ru

Connecting parts from thin sheet metal.

There are several ways to connect parts made of thin sheet metal. The simplest of them is a seam connection. It is obtained as follows. At a distance of 6...8 mm from the edge of the sheets to be joined, fold lines are marked and the sheets are bent at right angles (see figure on the left a). Then bend the edges of the workpieces (see figure on the left b), connect them into a lock (see figure on the left c) and bend the sheets near the seam using wooden block, as shown in Figure d, so that the connection does not become disconnected.

Connecting parts with a seam seam is used in the manufacture of buckets, drainage and ventilation pipes, cans, as well as when covering the roofs of houses with roofing steel.

In factories, such work is performed by tinsmiths on folding machines. Variants of such machines are shown below.

In addition to joining with a seam seam, sheet metal parts can be joined using rivets.

Rivets are used to create a so-called “permanent” connection. Typically, rivets are used to connect thin metal sheets, fasten facade plates, and also quite heavy structures.

Rivets have been used as a fastening element literally since time immemorial. It is enough to visit any Archaeological Museum to see this for yourself. For example, ancient warriors wore armor whose metal plates were connected exclusively by rivets. And if you remember that rivets were used as the main (almost the only) fastening element in the construction of the Eiffel Tower and the Aurora cruiser, you involuntarily gain respect for the people who invented the now so common fasteners.

Rivets are fasteners consisting of a rivet head and a shank. They are made from mild steel, copper, aluminum, brass. There are rivets with semicircular (a), countersunk (b), flat (c), semi-countersunk (d) heads (see figure on the left).

To connect parts with rivets, first mark the centers of the holes for the rivets. Then the holes are punched with a punch or drilled. The dimensions of the rivets depend on the thickness of the parts being connected. It is recommended to take the diameter of the rivet equal to twice the thickness of the thinner part. The length of the rivet shank is the sum of the thickness of the parts being connected and the length of the protruding part (it is equal to 1.25-1.5 times the diameter of the rivet), on which the closing head is formed. Often, two workpieces to be connected are drilled at once, clamping them with a clamp or in a vice. The diameter of the hole D should be 0.1...0.3 mm larger than the diameter of the rivet d (see Fig. on the right a). The rivet is inserted into the hole (Fig. b), and the length of the protruding part of the rivet should be equal to (1.3 ... 1.6) d. The embedding head is placed in the recess of the support (2) (Fig. c) and the parts to be connected are brought together by striking the tensioner (1) with a hammer. Then, with circular blows of a hammer (3), rivet the protruding head (Fig. d) and give it correct form using crimping (4) (Fig. e).

When making a riveted connection, you need to check the reliability of the hammer attachment on the handle. The workpiece must be securely fastened in a vice. You cannot stand behind the worker’s back.

Rivet joints are used in aircraft construction, shipbuilding, for connecting bridge parts, and in the manufacture of metal utensils. In industry, workpieces are connected with rivets using pneumatic riveting hammers or special riveting machines. Undoubtedly, rivets have a lot of undeniable advantages. But standard, so-called “solid” rivets also have a rather significant drawback - to create a truly reliable connection, great attention must be paid to the quality of work with them. Considering that the rivet must be held tightly on the other side when riveting, this is a rather labor-intensive task. However, progress does not stand still. Advances in riveted joint technology have led to the development of blind rivets, which solve this problem.

The installation tool (see figure on the left) for working with blind rivets is relatively inexpensive, and their ease of use is very high. Mechanical engineering, construction industry, the automotive and furniture industries, and enterprises in the electronics manufacturing industry actively use blind rivets, since the one-sided fastening technology is definitely more convenient and reliable than other fastening methods.

A single-sided rivet consists of two parts: a body and a rod. The rivet body is made from various materials: aluminum, steel, stainless steel, copper, MONEL alloy (Ni/Cu=70/30). The core of blind rivets is made of steel or stainless steel.

Design features: the rivet has a convex or hidden head. Installation of the rivet requires access from only one side of the material. Installation: drill through the materials to be fastened, mount the rivet using a special tool.

Among the characteristics of blind rivets, you should pay attention to the geometric dimensions (diameter and length of the rivet body). The type of rivet can be a regular one with a shoulder (D heads = 2D rivet body, Fig. 1), with an enlarged shoulder (D heads = 3D rivet body, Fig. 2), countersunk (Fig. 3) and blind with a water-gas-tight body (Fig. 4).

technologies.info

The use of rivets when joining metal sheets

A rivet is a metal rod that is used to create a permanent connection. This technology is used mainly for fastening sheet metal, for example, when creating air ducts, as well as parts of metal structures. The riveting forms an extremely strong connection. Moreover, unlike welding, this method is not associated with heating and changing the structure of the materials being joined in the weld area.

The riveting technology can be hot (preheated) or cold. The first is used in large-panel construction when connecting massive parts, for example, construction beams, and the second is used in everyday life and finishing work for assembling parts from thin sheet metal.

There are several types of rivets. A hammer rivet is a monolithic mushroom-shaped product with a semicircular or flat (countersunk) head. Serves to create a strong connection metal products.

If the rivet shank is too short, it will not form a strong closing head. If, on the contrary, it is too long, the head will not form correctly and will not provide reliable fixation. In this regard, rivets should be selected depending on the thickness of the material of the parts being connected.

The length of the rivet shank between the heads should not exceed five of its diameters. If this ratio cannot be maintained, the rivet connection is replaced with a bolted one.

leroymerlin.ru

2.12. Riveting works and riveting tools. Locksmithing: A practical guide for a locksmith

2.12. Riveting works and riveting tools

Riveting is the operation of obtaining a permanent connection of materials using rods called rivets. A rivet ending with a head is installed in the hole of the materials being joined. The part of the rivet protruding from the hole is riveted in a cold or hot state, forming a second head.

Rivet connections are used:

in structures operating under vibration and shock loads, with high requirements for connection reliability, when welding of these connections is technologically difficult or impossible;

when heating of the joints during welding is unacceptable due to the possibility of warping, thermal changes in metals and significant internal stresses;

in cases of joining different metals and materials for which welding is not applicable.

To make riveted connections, the following types of rivets are used: with a semicircular head, with a countersunk head, with a semi-countersunk head, tubular, explosive, split (Fig. 29). In addition, rivets with a flat conical head, a flat head, a conical head, a conical head and a head, and an oval head are used.

Rivets are made from carbon steel, copper, brass or aluminum. When connecting metals, select a rivet from the same material as the elements being connected.

A rivet consists of a head and a cylindrical shaft called the rivet body. The part of the rivet that protrudes from the other side of the material being joined and is intended to form the closing head is called the shank.



Rice. 29. Rivets:

a – with a semicircular head; b – with a countersunk head; c – with a semi-concealed head; g – tubular; d – explosive; e – split

The length of a rivet with a semicircular head is measured to the base of the head (body length), the length of a rivet with a countersunk head is measured along with the head, the length of a rivet with a semi-countersunk head is measured from the edge of the transition of the sphere to the cone to the end of the body of the rivet.

The diameter of the rivet is determined by the diameter of the body and is measured at a distance of 6 mm from the base of the head. The diameter of the hole for the rivet during hot riveting should be 1 mm larger than the diameter of the rivet.

Steel rivets with a diameter of up to 14 mm can be riveted in a cold state. Rivets with a diameter of more than 14 mm are riveted hot. Rivet diameters from 10 to 37 mm increase in 3 mm increments.

Riveting uses drilled, pierced or punched holes. For strong, tight and tightly rivet joints, exclusively drilled holes are used.

Rivet joints can be overlapped, butt with one overlay, butt with two overlays symmetrically, butt with two overlays asymmetrically (Fig. 30).




Rice. 30. Types of rivet connections:

a – overlap; b – end-to-end with one overlay; c – end-to-end with two overlays, symmetrical; g – butt with two overlays, asymmetrical

From the point of view of strength and density, the following types of rivet joints are used: strong, from which only mechanical strength is required; dense, to which only the requirements of density and tightness are imposed; durable and dense, from which, in addition to mechanical strength tightness of the connection is also required. The latter is achieved by enlarging the head and the presence of a rivet head, rather frequent placement of rivets by counter-chasing the edges of the joined sheets and rivet heads.

Rivet seams are divided into longitudinal, transverse and inclined. They can be single-row, double-row or multi-row (parallel and with staggered rivets). Sutures can be complete or incomplete (Fig. 31).




Rice. 31. Types of rivet seams:

a – single-row; b – double-row; c – multi-row full; g – multi-row incomplete

Before riveting various types riveted joints, the rivet pitch should be determined (the pitch of a given row is the distance between the two closest rivets in this row, the seam pitch is the smallest multiple of all steps in the rows) and the distance from the rivet axis to the edge of the strip.

Depending on the diameter of the rivet, the need and the type of riveting, manual and mechanical riveting are used.

The closing head is produced by impact riveting and pressure riveting. Impact riveting is versatile, but noisy; Pressure riveting is of higher quality and quieter.

For manual riveting, hammers are used to form the rivet head, crimping, supports, clamps and pliers.

For mechanical riveting, pneumatic or electric hammers, riveting pliers, rivet head supports, and consoles are used. On large industrial enterprises riveting machines are used - eccentric and hydraulic.

Rivets can be heated in blacksmith's forge, contact, industrial frequency currents on electric heating installations, as well as gas flames.

Incorrect riveting occurs due to an underheated or overheated rivet, poor fit of the elements being connected to each other, an error in forming the head, an excessively short or long rivet body, curvature of the rivet body in the hole, and also due to the hole drilled for the countersunk head being too deep.

For riveting it is necessary to use good tool. You should wear mittens on your hands and protect your eyes with goggles. It is necessary to correctly install the rivet head into the support or console, and correctly install the crimp on the rivet body. During riveting, do not touch the crimp with your hand.

Next chapter >

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Hand riveted metal. | MechanicInfo

Hand riveted metal. 4.67/5 (93.33%) 6 votes

Currently, hand riveting is used as an exception and is most often found during repair work.

Manual riveting does not require large expenditures on equipment. For manual riveting you need: a rivet forge, support, crimping, a hand hammer, one or two sledgehammers and feed pliers.

Disadvantages of hand riveting.

The disadvantage of manual riveting is the weakness of the hammer blows on the rivet, which, with a large length and diameter of the rivet, do not extend over the entire length of the rod and therefore the metal does not completely fill the rivet hole. Therefore, manual riveting is allowed with a rod length of no more than four rivet diameters.



Rice. 1. Position of the crimp when riveting.

In manual riveting, the rivet rod is hammered; strong blows with a sledgehammer do not upset the rods, but only flatten the protruding part.

Tool for hand riveting.



Rice. 2. Supports:

a – simple straight line; b – simple curved; c – lever; g – screw; d – pneumatic.

From the thickening obtained by upsetting, a head is formed at the end of the rod (Fig. 1, a) using crimping (Fig. 1, b). When the head is formed, the crimp is struck with a sledgehammer, and the crimp is turned and tilted in all directions, and the head thus receives the correct spherical surface. Throughout the entire operation, the rivet is supported from below by a simple lever or screw support (Fig. 2). Currently, pneumatic support is used. After riveting is completed, I cool the rivets, check the correct shape of their heads and check for damage.

mechanicinfo.ru