Sealing machine: design, do-it-yourself manufacturing, drawings

The creasing machine is used in tin work for joining cylindrical parts, flanging edges and rolling ribs. This is a mandatory stage in the processing of sheet metal products, so the characteristics of crimping must be approached carefully. The executive tool of the zig machine is rolling rollers of various profiles. Each type of roller is designed to perform a specific job. In production, the machine works in conjunction with a folding bender, a guillotine, folding equipment and rollers.

How to choose a crimping machine to suit your needs and what parameters should you focus on?

1. Carefully study the technical characteristics of the machine. Consider your own needs. For example, is the machine designed for piece or mass production? After weighing all the arguments for and against, make your final decision.

2. Decide how much money you are willing to spend on purchasing the necessary equipment. For example, if the machine is needed to perform one-time operations, then you can take a manual seaming machine. To equip production, you should select a powerful industrial zig machine designed for high productivity.

Now we will take a closer look at how to choose a seaming machine. The most important criteria when choosing a crimping machine are the thickness of the metal being processed and the overhang of the rollers. Therefore, we will start choosing a machine with them.

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Purpose of creasing machines

manual seaming machine

The crimping machine is designed for joining metal parts with a thickness of 1/2 to 4 mm. At the first stage, the lock is rolled, after which the elements are connected to each other. Sometimes the castle needs to be additionally besieged manually.

The creasing machine is used for:

• production of cylindrical tin products: ventilation and water pipes, boxes, ebbs;
• thermal insulation of pipelines;
• processing of shells;
• roofing works.

Main types of operations: flanging, zig, corrugation.

The main advantage of crimping over welding is the absence of exposure to high temperatures on the metal, which causes internal stress and deformation. And also a more economical production method that does not require the purchase of consumables, the use of electricity or fuel.

Features of homemade versions

A do-it-yourself zig machine can only be created using prepared drawings and designs. In this case, we will pay attention to the following points:

1. The pressure shaft must have a stroke of at least 12 millimeters. As a rule, the pressure shaft is located on top, the bottom is stationary.
2. There are also side stops that eliminate the possibility of shaft shifting during processing. Do-it-yourself crimping is created so that when replacing the washer, you can change the gap in the location of the working roller.

1. When considering how to create a zig machine with your own hands, we note that you will need gears with a diameter of about 6 centimeters to transmit force.
2. It is recommended to fasten the shafts so that they can be replaced if necessary. As for gears, there is no need to replace them during operation - only when servicing the structure. A do-it-yourself manual piecing machine should be created taking into account the fact that maintenance will have to be performed from time to time.
3. It is recommended to fasten it through a cotter pin, for which a special hole can be created using a drill. When creating a mounting hole, the thickness of the washers used and the length of the working roller are taken into account.
4. The box can be created from metal that has a thickness of 5 millimeters or more. When calculating the height of the box, the height of the shaft and the gap created are taken into account.
5. The bed is created so that the section forms the letter “T”. Quite often a frame with a height of about 25 centimeters is created. The width of the bed is developed according to the assigned tasks. All elements can be connected to each other using various methods: welding, a combination of bolt and nut, and so on. Note that most often a manual beading machine is created with your own hands by using bolts and nuts - a prefabricated structure is easier to operate, but has much less rigidity than a welded one and requires periodic checking of the degree of clamping of all fasteners.
6. The limiter is made of metal, the thickness of which is approximately 3 millimeters.
7. The handle can be taken from various other devices.

Assembly drawing

You should pay attention to the fact that you will also have to create the rollers yourself, for which you need to have turning equipment. They are replaceable and selected depending on the tasks assigned during production. Drawings of rollers for a zig machine with dimensions can be downloaded from the Internet; production is carried out using rolled hardened steel.

The above information fully describes how to make a zig machine with your own hands, what features it has and for what purposes it is used.

Device classification

A large number of modern crimping machines can be divided into classes according to their most important indicators or design features. Most often, such machines are divided depending on the type of drive:

• Manual - the most common version of the zigovochny machine. All operating mechanisms of this machine are activated solely through the use of physical force of its operator. For example, in the upper part of the machine there is a special handle, with the help of which the rollers with working rollers are pressed. The rollers can be scrolled together with the part fixed between them. To use this type of machine efficiently, the operator requires certain skills, since several controls must be used simultaneously to process a part. The maximum thickness of the part that can be worked with on this machine is 15 mm.
• Hydraulic ones are the most powerful staking machines, but at the same time the most expensive. The technical characteristics of such machines allow you to work with metal workpieces of impressive thickness. Hydraulics provide high-quality pressure of the rollers to the workpiece and securely fix it. At the same time, the scrolling of the rollers and the movement of the workpiece being processed is carried out by means of an electrical type wire mechanism. In addition to the high price, these devices have another drawback - serious dimensions. That is why these devices are most often used in large industries.
• An electrically driven device is considered to be a medium-power version of a staking machine. Such a machine is more expensive than a manual one, but much cheaper than a hydraulic one. It is worth noting that, in addition to the electric drive, this machine also has a classic mechanical drive. It is with its help that I fix the workpiece between the rollers, which rotate thanks to the electric drive.

You can activate the operation of such a machine using a foot pedal. Thus, both hands of the person who works at this machine remain free, which greatly facilitates the process of processing workpieces. A characteristic feature of this type of machine is the possibility of its effective use both in home workshops and in serious enterprises.

Design features and purpose

The main function of the machine – beveling, which is the process of applying special recesses to a metal workpiece, the device can perform efficiently thanks to its special design. The presence of a groove on the surface of even very thin sheet metal can make it much stronger. The main thing in this case is to correctly select the parameters of the recess created by the device.

In addition to conventional beveling, modern machines of this type are capable of performing a number of other functions - cutting, beading, creating a relief on the surface of the workpiece. The more powerful the machine’s drive, the more complex and high-quality work it can perform. Despite the differences in the drive system, most beading machines have a similar structure, which includes: lower and upper shaft, rollers, base, adjustment screw, control handle, gears.

The operating principle of the crimping machine consists of the following key points:

• The operator places the workpiece between two rollers of the machine.
• The machine shafts fix the part.
• The shafts are then set in motion.
• During the rotation of these mechanisms, the fixed workpiece also begins to move. The working rollers have the necessary projections that deepen the metal workpiece to a given depth.

Areas of application for creasing equipment

Equipment designed to perform beading, even though the name of such a technological operation is familiar mainly to metalworking specialists, is actively used in various fields of activity. Sealing machines are practically indispensable for the manufacture of elements of roofing structures, in particular, for the formation of their edges.

Examples of drainage elements made on a crimping machine

It should be noted that in the construction industry, bending machines have found very wide application. Using such machines, in particular, the following elements of building structures and communication systems are made from sheet metal: parts of drainage and air duct systems, insulation for heating mains, etc. In the construction industry, manual staking equipment is predominantly used, since it is characterized by its small dimensions and insignificant weight, does not require an electrical supply for its operation and can be used almost anywhere.

The creasing machine can also be used to reliably connect cylindrical workpieces made of thin sheet metal together. Rollers for equipping a zig machine of this type, when a cylindrical workpiece passes through them, form locks on it, with the help of which the two parts are connected.

Rolling the lock on the air duct elbow

When making connections using locks, unlike welding, there is no thermal effect on the metal parts, which eliminates the possibility of their warping. In addition, such a machine, which you can also make yourself, does not require any additional consumables for its use.

To expand the functionality of a staking machine, including a manual one, it can be equipped with additional working parts. Machines equipped in this way can be used not only as creasing equipment, but also as bending and profiling equipment. Modern creasing machines for industrial use are often equipped with automated control systems, which increases their productivity and accuracy of technological operations performed with their help.

Special attachments allow you to make folds for connecting thin-walled pipes

Manual seaming machine, classification of rollers and homemade drawings

The creasing machine is used in tin work for joining cylindrical parts, flanging edges and rolling ribs. This is a mandatory stage in the processing of sheet metal products, so the characteristics of crimping must be approached carefully. The executive tool of the zig machine is rolling rollers of various profiles. Each type of roller is designed to perform a specific job. In production, the machine works in conjunction with a folding bender, a guillotine, folding equipment and rollers.

Purpose of creasing machines

The crimping machine is designed for joining metal parts with a thickness of 1/2 to 4 mm. At the first stage, the lock is rolled, after which the elements are connected to each other. Sometimes the castle needs to be additionally besieged manually.

The creasing machine is used for:

• production of cylindrical tin products: ventilation and water pipes, boxes, ebbs;
• thermal insulation of pipelines;
• processing of shells;
• roofing works.

Main types of operations: flanging, zig, corrugation.

The main advantage of crimping over welding is the absence of exposure to high temperatures on the metal, which causes internal stress and deformation. And also a more economical production method that does not require the purchase of consumables, the use of electricity or fuel.

Design of creasing machines

Sealing machines are a pair of plates made by waterjet cutting with high precision. Two shafts are installed between the plates. The upper shaft is movable; it moves using a screw-type clamp. The workpiece is pressed evenly over the entire plane, so an even, neat ridge is obtained.

The zigging depth can be adjusted manually or automatically depending on the model. The impact on the metal is carried out by rollers that are placed on the shafts. Having selected the appropriate shape of the rollers, the required ridge shape is achieved.

Types of zig machines

electromechanical crimping machine

Beading machines differ in the type of drive:

• manual;
• hydraulic;
• electromechanical;
• with CNC control.

A manual creasing machine allows you to work with thin sheets, no more than 1.2 mm. The working shafts on which the rollers are placed are brought together using a special handle. The shafts also rotate manually. The crimping machine is secured with a clamp to a stable horizontal surface. Its advantage is mobility and compact size. The disadvantage is that the operator must simultaneously hold the sheets and turn the handle. Which requires some management skills.

Manually controlled crimping machines are suitable for small-scale production and work at heights.

Hydraulic and electromechanical equipment bends sheets up to 4 mm thick; it is used in large industries. The rotation of the shafts occurs due to the motor, and the frequency converter allows you to change the operating speed. The equipment is controlled from a remote control or pedal, completely freeing the operator’s hands.

The main drive is protected from overload by a special mechanism. Hydraulic machines are made only stationary; the pressure roller is lowered by means of a hydraulic cylinder, easily bending thick metal sheets.

The rollers are rotated by an electric motor; its combination with a hydraulic cylinder ensures maximum performance with lower power consumption than electromechanical ones.

CNC bevels are used in the production of large batches of the same type, standard products. Compact CNC models are equipped with a microprocessor and a controller with intelligent control. The software controller remembers the operations recorded by the operator and repeats the clamping force and processing speed many times. Many models operate in several modes: automatic, manual and training. Speed ​​adjustment is carried out smoothly up to 30 meters per minute. To make the machine easier to operate, it is equipped with an eccentric.

Technical characteristics of zig machines

Sealing machines are characterized by the following main parameters.

Table 1. Some characteristics of crimping machines

Types of rollers for zig machines

Manufacturers can change the labeling of the rollers they produce; here are the most common names.

• V - for decorating the edges of insulating boxes and pipes, rolling wire using ZB ZA;
• S - for the production of stopper ridges and stiffeners;
• SK - for making ribs of rectangular section. Wide ribs are used to fix rubber seals in the manufacture of round-section ventilation ducts;
• E, EV - the edges of the pipes are corrugated, making the diameter smaller for socket connections. Used for the manufacture of ventilation and drainage pipes and chimneys. EV rollers perform both stop rib and corrugation;
• BC - bend the edges on flat-shaped parts for flanging elements of rectangular air ducts, used in the manufacture of round-shaped plugs;
• KA - the set includes four rollers (two pairs) for connecting round pipes with further spot welding. They make connections with an overlap of 8 to 12 mm, and are used in the manufacture of small series of air ducts and chimneys;
• BS, F - make a double fold of a vertical lock with a flanging height from 4 to 12 mm, it is selected taking into account the thickness of the material;
• BB - performing flanging of the edges of mortises of various shapes, including tees, as well as for bending the short fold of a vertical lock;
• KB - upsetting of a vertical lock. Lock folds are made on rollers BB, BS and F. They are used to connect branches and transitions of vertical folds, parts of weirs and air vents;
• BD - perform flanging of the edges of long round pipes;
• ZB, ZA - roll wire along the edge of the pipe. The edge is first bent on V rollers. This procedure is necessary to increase the rigidity of pipes made from thin sheets of metal; it is performed exclusively on zig machines;
• AV - coupling of inserts into ventilation blanks using a screw method, ensures tightness;
• DIN 71550 - makes semicircular ribs on pipe blanks of small diameters for attaching a flexible hose. The minimum diameter of the pipe is 1 cm, it works on any type of metal. This type of roller is not compatible with all types of equipment;
• M - cut pipe blanks across the diameter. Complete with a holder, it cuts out rings from sheets.

In order for a beading machine to perform quality cuts, it must be equipped with a parallel roller clamp. The semicircular stop is an addition to the BB rollers. It is used for external flanging in round cutouts of flat parts.

Design features of zig machines

One zigovochny device is structurally not too different from another. Their main elements - shafts - are located horizontally, vertically or at an angle. Forming rollers are mounted on the shafts, and the workpiece is secured between them. Due to the opposite movement of the main elements, uniform depressions appear on the metal. With their help, the necessary connection is made.

When choosing a crimping machine, you need to pay attention to the following technical characteristics:

• type of drive;
• diameter and overhang of rollers;
• the number of attached pairs of these parts;
• permissible metal thickness;
• machine size.

The smallest rollers are 50 mm in diameter, their number varies from four to six pairs.

An important indicator is roller overhang. It is better to purchase a machine with a maximum reach - up to 350 mm. This will expand the capabilities of sieving equipment.

The permissible thickness of the metal sheet is from 0.5 mm to 4 mm. The crimping machine will not take up much space (with the exception of CNC machines). Such a device can weigh from 17 to 300 kg.

Before starting work, the workpiece is fixed between the shafts and the handle is turned. On manual machines, due to their low power, it may be necessary to pass the workpiece through the rollers several times.

• https://met-all.org/oborudovanie/prochee/zigovochnaya-mashina-ruchnaya-zigovka-svoimi-rukami-chertezhi.html
• https://stankiexpert.ru/stanki/gibochnye-stanki/zig-mashina-svoimi-rukami.html
• https://metalloy.ru/stanki/zigovochnaya-mashina
• https://stanokgid.ru/metall/ruchnoj-zigovochnyj-stanok-svoimi-rukami.html
• https://prostruky.ru/instrumenty-i-oborudovanie/listogib-svoimi-rukami-instrukciya-i-chertezhi-dlya-samostoyatelnoj-sborki.html
• https://promzn.ru/stanki-i-oborudovanie/izgotovlenie-zigovochnogo-stanka.html

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Types of rollers for zig machines

Manufacturers can change the labeling of the rollers they produce; here are the most common names.

In order for a beading machine to perform quality cuts, it must be equipped with a parallel roller clamp. The semicircular stop is an addition to the BB rollers. It is used for external flanging in round cutouts of flat parts.

Types of sheet bending machines and features of their design

Before you start assembling a manual unit with your own hands, you should accurately determine the volume and list of work that the new device will perform in the future. Indeed, depending on the purpose of this unit, the design diagram of the device may also change.

Of all the solutions available today, the simplest sheet bending machine in terms of design is a product that bends sheet metal using a special traverse. Such a device is useful if you are working with material no more than half a meter , allowing you to bend the metal at an angle of 90 degrees without additional devices using only the strength of your own hands.

The material is fixed in a vice or clamps, where bending is carried out due to the high pressure from the traverse.

Sometimes, due to the high elasticity of the material, it is quite difficult to achieve an angle of exact 90 degrees. A special spacer (in the figure on the right), which looks like an ordinary strip of metal, helps to correct the situation

A press brake consisting of a punch and a die is much more difficult to manufacture. In this case, the sheet metal is placed directly on the die, where the desired profile is given to the workpiece thanks to a punch descending from above.

The press brake, unlike the machine, is not widely used due to its large mass and complex design. And working with it at home is not always safe!

Let's consider the option of assembling a sheet bending machine with your own hands, which will function in conjunction with a hydraulic press. If you already have a press at home, then adding a device for bending metal will not be difficult.

Practice shows that the sheet bending machine, the operation of which is carried out by 3 shafts, was and remains more advanced in operation. Such a unit is sometimes called a pass-through unit. Its main advantage is that the device makes it possible to produce metal blanks with different bending angles. The metal bending machine can be equipped with either an electric or manual drive, allowing craftsmen to implement a wide variety of designs.

• A broaching sheet bender can be additionally equipped with a traverse, a clamp and a support, allowing it to be used for manual bending of material. Machines of this kind are equipped with various shafts, which can always be purchased separately, making the device more versatile.

• Profiled rollers are used, as a rule, to give the desired angle to elements of roofing structures, be it flanges, ridges, gutters, valleys, etc.

• Rollers with a smooth working surface are used in most cases when it is necessary to carry out tin work, for example, to make sections of pipes of larger diameter or to bend workpieces.

Sealing machine: design, do-it-yourself manufacturing, drawings

A creasing machine is specialized equipment that allows you to perform such a technological operation as creasing. This method of processing, which sheet metal blanks are subjected to, is not particularly difficult in technological terms, but to carry out such processing it is necessary to use special machines. Such equipment, presented on the modern market in a wide variety of serial models, can be equipped with a manual, electric or hydraulic drive. If desired, it is easy to make a simple crimping machine with your own hands.

Operation of a seaming machine: applying a double round seam to a cylindrical workpiece

Purpose and design of beading equipment

Before you begin to understand what a crimping machine is, you need to understand why creasing is performed. In the process of carrying out this technological operation, recesses of a semicircular profile are applied to the surface of the sheet metal workpiece.

Such recesses, which are called ridges, act as stiffening ribs; their presence on the surface of a thin-walled metal product makes it much stronger. The size of the recesses, for the formation of which the zig machine is used, completely depends on the thickness of the metal used for the workpiece.

To select this parameter, which is very important for such a technological operation, special lookup tables are used.

Many modern manufacturers produce crimping machines, the technical capabilities of which allow them to perform a whole range of technological operations.

The operations to which sheet metal blanks are subjected during their circular processing include corrugating their surface, cutting and flanging. More powerful and productive, when compared with manual equipment, are electric crimping machines.

Due to the presence of a powerful electric drive in their design, such machines make it possible to successfully process workpieces made of thicker sheet metal.

Main parts of the seaming machine

Regardless of whether the crimping machine is equipped with a manual or electric drive, the design and operating principle of such a machine remain virtually unchanged. The main design elements of such machines are two shafts, the axes of which can be located horizontally or at some angle. It is these shafts, rotating relative to each other in the opposite direction, that impart rotation to the working rollers fixed at their end part. The zig machine works, both manual and electric, according to the following scheme:

• the sheet metal blank is placed between two forming rollers of the equipment;
• the machine shafts are brought together, thereby ensuring clamping of the workpiece between the working rollers;
• using a manual or electric drive, the shafts are rotated;
• when the shafts and working rollers rotate, the part sandwiched between them also begins to move; When a workpiece is moved between working rollers with protrusions of the required size and shape, corresponding depressions are formed on the surface of the sheet metal under the influence of plastic deformation.

Classification of serging equipment by drive type

The simplest, both in its design and in its operating principle, is the manual zigovochny machine. All manipulations with such equipment, as its name suggests, are carried out manually. Such manipulations, in particular, include: pressing shafts with working rollers, for which a special handle located in the upper part of the device is used; scrolling the rollers together with the workpiece sandwiched between them: this action is also performed using a special lever-type handle.

To effectively use the simplest manual type crimping machine, certain skills and dexterity are required, since its operator must simultaneously turn the handle and hold the workpiece in the required position, thereby using both hands. Due to the low power of the drive installed on it, a manual creasing machine can be used for processing sheet blanks whose thickness does not exceed 1.5 mm.

Making at home

If you do not want to buy a factory-made crimping machine, you can make it yourself. This option is suitable for those who work with metal in home workshops and in limited quantities. For industrial enterprises, it is better not to use self-made equipment.

One of the advantages of a homemade machine is its simplicity and low cost of production. All the main parts can be easily found on your farm or purchased on the market. Of course, the number and nature of the parts depends on the type of device you are going to make. There are several options for producing a zig machine at home. We offer one of them.

To create the device you should prepare the following parts:

• Bracket.
• Working shafts (2 pieces).
• Cylinder shank.
• Device body.
• Protective cover.
• Device with a spring.
• Locking pin.
• Gear parts.
• Screw with folding handle.
• Rollers.

The device can be secured using a special screw, but this should be done in such a way that the shank of the mechanism fits into the bracket. The body of the device must be fixed in one position using a locking pin. Using the handle, you can regulate the movement of the apparatus shafts.

The rollers of a homemade zig machine are driven by another handle and by means of a toothed belt drive. When creating your own machine, be sure to ensure that the transmission elements are covered with a special casing.

Such a structural element will certainly make the operator’s work safer. For detailed information, watch the corresponding videos, of which there is no shortage on the Internet.

Video: Homemade manual ZIG machine.

How to operate a zig machine

Once the above device has been purchased or designed, you can begin metal processing. The machine is easy to use, but there are important nuances that are worth talking about additionally:

• The workpiece must be additionally secured using a special stop. The degree of fixation is adjusted using the appropriate screws.
• The leading edge of the workpiece should be inserted between the rollers of the machine.
• The second roller of the machine is controlled by a handle.
• The rollers are driven using a special handle (in manual machines).

Several cycles may be required to fully process a part. After the required result is achieved, the workpiece can be removed and the working units of the machine.

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Listogib: is it difficult to do it yourself?

Most craftsmen claim that preparation and implementation generally takes less than a day, despite the fact that the materials need to be processed, because elements that are often rusty and not quite suitable for the parameters are taken. Next, we present the varieties depending on the ease of assembly.

Types for home use

• Rotary (clamping, with traverses) - quite simple, but take up significant space. They can be prepared from scrap materials. They are most effective when combined with cutting knives.
• Rotary (with rollers) - they are much more complicated, since the elements themselves require preliminary metal processing on turning equipment, and an electric drive is an additional complexity.

Bending machine drawing: introduction and improvement

From a design point of view, the manual sheet metal bending machine shown in the first drawing below can easily be improved. The diagram clearly shows that the metal bending device is assembled from the following components:

• Wooden pillow.
• Support beam made of 100-120 mm channel.
• Cheeks from 6-8 mm sheet.
• Bendable profile.
• A pressure beam made of 60-80 mm corners joined together by welding.
• Axles for turning the traverse (made from 10 mm metal rod).
• A traverse, the role of which is played by an 80-100 mm corner.
• The handle of the device is made of 10 mm rod.

(Drawing No. 1)

Initially, in the drawing, the traverse of the bending machine is made from a corner, but it is much better to make it from a channel . This solution will increase the endurance of the traverse many times over. Otherwise, at a certain point in time, the corner will certainly bend in the middle, which will noticeably reduce the quality of the bend in this place. At the same time, replacing it with a channel will make it possible to work longer on the machine without the need to replace components, providing more than 1300 bends instead of the usual 200, which is not much if you work actively!

The design of the presented sheet bending machine, made by hand at home, can be improved not only by changing the traverse, making the unit even more versatile and efficient.

The second drawing makes it possible to understand in more detail the design features of a homemade sheet bender:

• A clamp made of a screw with a collar and a heel, as well as a 40-60 mm angle.
• Cheek.
• A channel serving as a support beam.
• Do-it-yourself pressure beam bracket made from 110 mm angle iron.
• Pressing beam of the machine.
• Axis of rotation of the traverse.
• Directly, the traverse itself.

(Drawing No. 2)

We increase the reliability of machine mounts

A sheet bending machine, among other things, has another significant disadvantage, which is the layout of its placement on the working surface. The clamps themselves, namely they are designed as fasteners, are considered an unreliable fastening method. The situation is further aggravated by the fact that welds are characterized by rapid fatigue! Based on this, it makes sense to completely abandon the use of this fastening element, which will additionally eliminate cheeks and welded joints from the design of the device.

You can improve your sheet bending machine yourself in the following way:

• A support beam is made of such dimensions that in the future it can protrude beyond the boundaries of the working surface;
• U-shaped eyes are made at the ends of the support beam;
• The support beam is fixed to the working surface with shaped nuts with claws and bolts (M10).

But, if the new version of the sheet bending machine no longer has jaws, then how will the traverse be attached? This issue can be easily resolved this way: just use butterfly door hinges , which, as a rule, are used to secure heavy metal doors. The hinges themselves will provide the unit with greater accuracy, and fastening can be done using countersunk screws. In the second drawing this point is clearly demonstrated in the lower right corner.

Since butterfly door hinges are quite reliable, you can bend a lot of metal blanks on a homemade sheet bender with a traverse.

How to strengthen the pressure beam?

To extend the operational period of the clamping beam, making it comparable to the traverse, you need to supplement the corner with a metal base with dimensions of 80 by 16 millimeters. In this case, it is worth making a 2 mm chamfer on the working edge of the complementary element. At the same time, the front edge of the metal strip must be given a 45-degree angle to align it with the plane of the clamping angle.

In the second sectional drawing this element is shown at the top right. Thanks to this solution, the metal will begin to work in compression, and not bending as before, which was extremely undesirable, significantly increasing the operating time of the machine without breakdowns.

Another 60th corner should be welded to the back flange of the main clamping corner. This will keep the latter from bending upward. In the second drawing this moment is more clearly presented at the top left.

Don’t forget about the bottom of the pressure beam, namely the milling of this part, because it is what forms the bend of the metal profile. According to generally accepted rules, the unevenness of this plane should not be more than half the thickness of the future workpiece, otherwise it will not be possible to make an even bend with your own hands - swelling will definitely appear along the fold line!

It is important to note that the beam can be milled only after installing all welds , because their implementation often causes changes in the geometric characteristics of the structure.

Where does the assembly begin?

To assemble a sheet metal bending machine, you will need drawings, photos, and videos demonstrating the assembly sequence with your own hands. In addition, before work, it is important to think through some points, namely the availability of components, the effort that will need to be applied for work, the cost of the device, weight and dimensions, which, in turn, will affect mobility. As a result, we obtain approximately the following set of initial data:

• The number of working cycles within which the sheet bending machine will operate without repairs and readjustments is 1200;
• The maximum permissible width of a metal profile is 1 meter;
• The maximum bending angle of sheet steel without manual finishing is 120 degrees;
• The design of the machine should not include welded joints that poorly tolerate alternating loads;

• Profile thickness no more than 1 mm for copper, 0.7 mm for aluminum and 0.6 mm for galvanized;
• It is worth minimizing the number of components that will need to be ordered externally, focusing more on the help of milling machines and turners;
• It is not recommended to use parts made of special steels (stainless steel) for assembly.

It is extremely difficult to find a drawing of a sheet bending machine that would fully meet the listed requirements, but this does not prevent you from using the closest solution, modifying it to suit yourself.

How to make a homemade sheet metal bending machine

Let's watch the video instructions:

Isn't it easier to buy

The disadvantages of purchased equipment include:

• high cost;
• standard functions and sizes - you cannot improve the model and customize it for yourself;
• large dimensions.

The simplest way

Even if you don’t have time to do this installation, but you urgently need to bend the edge (end, thin layer), you can attach the workpiece to a hard corner and beat off the ends with a mallet. It's simple, but there are disadvantages:

• the bend is uneven;
• you need to apply a lot of physical strength.

Sheet bending machine for thick sheets

The best option is an electrically driven roller machine or a hydraulic press, since it is difficult to bend significant volumes manually and the impact must be quick and massive.

What is the device

This is stationary equipment with the following features:

• made of metal or hard wood;
• dimensions exceed the workpiece;
• there are moving and fixed parts (shafts, dies, punch and matrix).

The rest of the appearance depends on the specific model.

Application area

The devices are used in factories, auto repair shops, and also in households. Installed outdoors and indoors.

Selection principles

When purchasing a crimping machine you need to consider:

• dimensions of equipment, premises;
• type of drive;
• roller material;
• control system;
• number of rollers;
• thickness of metal for the manufacture of housings and moving elements.

We must not forget that there are different types of videos. They vary in shape. You need to think in advance about the purpose of using the installation and purchase a set of consumables.

Compact machine (Photo: Instagram / metalmaster_stanki)

Advantages and disadvantages

Advantages:

• mobility of hand models;
• ability to work with parts of different thicknesses;
• Ease of Management;
• low price;
• long service life;
• the ability to join metals that cannot be processed by welding.

To work with parts of large thickness, an electric or manual drive is not enough. You need to buy expensive hydraulic equipment, which takes up more space.

Manufacturers and price

There are various brands of manual, electric, and hydraulic crimping machines sold in the market. The cost depends on brand awareness, drive type, power, and performance. Manufacturers:

• JET;
• MetalMaster;
• Isitan;
• Stalex;
• Proma;
• Schulze;
• IKMN;
• STS.

The average cost of manual installations is 15,000 rubles.

Classification and design solutions of beading machines

Such equipment (often also called zigmachines) is distinguished by the following characteristics:

The most popular models of electrically driven zigging machines are two-roller machines of the IVA 27_ _ series with horizontal spindles. Electromechanical beading machines are manufactured in accordance with the technical specifications TU 2-041-94, and include the following components:

An electromechanical piping machine works like this. When the engine is turned on, the torque is transmitted through a reduction gearbox and an intermediate gear to the lower support roller, onto which the workpiece, which has previously passed through the straightening unit, is fed until it stops. When the lever system with pneumatic clamping of the equipment is turned on, the latter is fed until it comes into contact with the surface of the workpiece, after which the stop is folded back and the motion sensor turns on the power supply of the strip into the adjusted gap. The relief corresponding to the profile of the tool is formed. If it is necessary to calibrate the resulting profile, the rotation of the engine is reversed, or re-beading is performed, slightly reducing the value of the working gap. To remove the finished product from the working space of the zig machine, it is enough to return the tool to its upper position by turning the cylinder into reverse.

The IV2716 creasing machine can operate as part of a profiling production line; it operates in automatic mode, and a tape or a long strip of metal is used as the initial workpiece. To facilitate removal of the finished part, the machine is additionally equipped with either a roll winder or swinging reset levers, which are controlled by cams installed at the free end of the support shaft.

Standard sizes of serial electric beading machines