How to make a bending machine for rebar

Do-it-yourself manual machines for bending reinforcement:

When performing work near the house (construction, production of steel structures, etc.) you may need machines for bending reinforcement. It is not always possible to purchase a factory-made unit.

There can be many reasons: there is no way to get to the store, there is no suitable model at the outlet, due to a lack of financial resources. But there is a way out of the situation. You can make a machine for bending reinforcement with your own hands. This is not difficult to do.

Just before this you need to familiarize yourself with the design of such devices, choose the appropriate option, find suitable drawings and diagrams.

The variety of types allows the machines to be used not only for deforming metal reinforcement. Some options have the ability to cut the reinforcement into pieces. But in this case, the design of the machine is complemented by a knife or circle mounted on the base.

Bending of reinforcement from a mechanical point of view

As a result of rolled metal of all types (cold-drawn, hot-rolled, heat-strengthened), a reinforcing product in the form of a rod is obtained. In cross section it looks like a circle. Its surface is smooth or has a periodic profile. Its diameter ranges from 4 to 80 mm. The length of the product can be up to 12 m. This rod is usually called fittings.

The product is deformable. If this process is carried out under control, then we talk about bending the reinforcement. The result of this process is a change in the direction of the central axis vector at the bend.

Operating principle of the device

All machines for bending reinforcement operate on the same principle. The structure consists of several shafts. The first shaft is necessary to fix the reinforcement at a certain angle. The second shaft helps bend the rod around the third, main (central) shaft. As a result, deformation (bending) occurs in the selected location. All machines (both home-made and factory-made) operate on this principle. The Afacan reinforcement bending machine was no exception.

Machine Operation

The entire process of bending reinforcement using a homemade machine can be divided into several stages.

First, the rod is installed next to the first shaft. After this, it is securely fixed.

Secondly, the reinforcement is moved so that the point selected for bending is located on the support shaft.

And the final, third stage is the actual deformation of the reinforcement.

This simple design can be made independently. The only point that needs to be taken into account is that a homemade machine for bending reinforcement is capable of bending only thin rods. Their diameter does not exceed 16 mm. If the workpiece has a large diameter, then significant effort will be required to deform it.

Errors when working with reinforcement

During deformation, the reinforcement should not lose its strength. Therefore, all work must be carried out according to the rules. During the bending process, two errors sometimes occur:

• The rod is slightly cut at the bend.
• The bending area is heated using autogen, welding and other methods and tools.

Professionals assure that these two methods to facilitate the bending process are not suitable. The fact is that these methods greatly affect the strength characteristics. And not for the better. Therefore, a manual reinforcement bending machine will help you bend the rod correctly. Thanks to this device, it is possible to bend the reinforcement in a cold state without compromising its integrity.

Features of the machines

Machines for bending reinforcement have the following characteristics:

• Light weight (ranging from 15 to 25 kg).

• Mobility. The device can be moved to work in another location.

• Manual machines are capable of bending a rod to an angle of 90 degrees. There are times when the angle increases to 110 degrees.

• The loss of strength does not exceed 10%.

Machine options

The simplest option for making a machine for bending reinforcement requires the following materials:

• Metal corner with dimensions 40x40 mm.

The metal corner is cut into two parts. The first one is mounted on a wooden beam. This part of the structure is needed in order to fix the reinforcement before deformation. The second part of the metal corner, which was cut off earlier, is attached to the wooden beam using bolts.

This ensures the mobility of the element. The second part will be a lever. Bending reinforcement (especially large diameter) requires a lot of effort. This is a significant disadvantage of this option. The situation can be corrected by increasing the length of the lever.

Machines for bending reinforcement according to Zamkov’s design will help you cope with large volumes of work. The disadvantage of this option is the more complex design. It requires new parts that need to be machined. The work will proceed according to all the rules if the support table is stable on its legs.

The machine is mounted to the base body. The product is fixed between the installed rollers. When the third one moves, the part bends. A steel plate is used as a place to install the unit, the thickness of which should be more than 4 mm.

Do-it-yourself manual machine for bending reinforcement

Such devices have a simple design. Thanks to this, making your own is not a difficult task. Before starting work, it is recommended to familiarize yourself with the drawings of finished devices.

The basis for the machine is a metal frame. A metal corner or round rod is attached to it by welding. If you plan to bend thick reinforcement (the diameter of which ranges from 6 to 12 mm), the legs of the frame must be firmly fixed to the floor.

But there are cases when it is planned to make the machine portable. In this case, all structural elements must be fixed on a massive slab. The plate itself must be securely fixed before use.

This can be done using bolts or special pins that are welded to the bottom of the device.

The rotary platform is the second element required for the manufacture of the machine. Two more pins and a lever are welded to it. The central and bending shafts should be located at some distance from each other.

This interval is selected depending on the maximum diameter of the reinforcement that will be bent on this machine. In addition, it is necessary to retreat a few centimeters from the edge. This technique will allow you to properly distribute the load.

After the rods are completely secured, a chamfer is cut along the edges of the workpiece at an angle of 45 degrees.

Particular care must be taken during the construction process during the welding process. The quality of the entire structure will depend on it. Therefore, to ensure quality work, the device is securely secured using a vice. Whenever possible, it is better to replace welding seams with fastenings using bolts. This will allow you to move the device if necessary.

Machine for large diameter fittings

If you plan to bend large diameter reinforcement, you can use a slightly modified design. It consists of two pieces of steel pipe. The thicker the fittings, the longer the pipe is taken. This device works very simply. One end of the rod is inserted into the pipe and fixed there. Another part of the pipe is put on the second end of the rod.

One side is lowered to the ground and pressed down with the foot. The second part rises up. At the same time, the fittings located inside also rise.

This is the simplest version of a mobile machine. It has small size and weight. Thanks to this, they do not interfere with moving or transferring the machine to another place. In another place, it is enough to secure the device to the base. For this purpose, bolted connections are used.

Rebar cutting

Some versions of the machines have the ability to cut reinforcement. This complicates the design and manufacturing process. But the work pays off by performing more functions.

The simplest option on how to make machines for cutting and bending reinforcement is to use a carved disk from a grinder. It is installed on the base next to the shafts to deform the reinforcement.

The design of the machine in this case will consist of such elements as:

• Shafts for deforming rods.

• Cutting disc (or any other blade).

• A motor that will make the cutting disc move.

• The foundation on which the entire structure will rest.

A channel is attached to the base, which will subsequently serve as a guide axis. All parts included in the structure will be attached only to the channel.

Thus, from the above it is clear that the process of manufacturing a machine for bending reinforcement is quite simple. It does not require a large amount of materials and tools. The result is a serviceable machine with lower financial costs.

Devices available in retail outlets will cost approximately 1.5-3 times more. This means that if the cost of a new machine is 5 thousand, the financial costs of building a machine with your own hands will be in the range of 1-1.5 thousand rubles. It is impossible to disagree with such a list of advantages.

Therefore, making a machine for bending reinforcement with your own hands will be interesting to any owner.

Source: https://www.syl.ru/article/312493/ruchnyie-stanki-dlya-gibki-armaturyi-svoimi-rukami

Do-it-yourself device for bending reinforcement

page » Do-it-yourself » Do-it-yourself reinforcement bending machine » A device (manual machine) for do-it-yourself reinforcement bending

The principle of operation of all designs of manual devices for bending metal (sometimes called manual machines) is the same: a “lever of the first kind” is used. If you have:

• the desire (initiated by need) to create a bending device for reinforcement;
• plumbing skills;
• necessary tools (including a bench with a vice)

- then you have come to the right place. With our hint, you can create a device (manual machine) for bending reinforcement with your own hands. The device of the proposed design can bend steel reinforcement with a diameter of ≤ Ø 15 mm .

What tool will you need?

In addition to a set of plumbing tools, which every skilled owner has for performing “work around the house and in the country,” you will need:

Description of the bending device

The bending device consists of two parts:

• motionless. It's called the base;
• mobile. It's called a lever.

The processed rod is placed between the mandrels and is deformed under the influence of a pin installed on the lever. The amount of force is determined by the length of the lever handle (usually about 500 mm long) and the physical capabilities of the mechanic. If necessary, provision should be made for extending the handle (for example, with a hollow pipe).

Manufacturing technology of fixtures for bending reinforcement

It is necessary to prepare 3 mandrels Ø 20 mm and a pin Ø 25 mm, 50 mm long each (see drawings). The lever should fit freely onto the pin. This is achieved by processing a size of Ø 25 mm on the pin using an abrasive machine.

Base

For the base, we cut out a steel plate with a thickness of ≥ 10 mm (see plate drawing below). Drill holes on it:

• Ø 20 mm for mandrel;
• Ø 25 mm for pin.

The basis of the bending device.

If you are the happy owner of a durable and strong workbench, you can drill 4 holes Ø 810 mm (indicated Ø 8 mm in the drawing) in the base to attach the fixture to it.
If the strength of the workbench is in doubt, then the base should be welded to a corner 100 x 100 (mm) with a length of 1000 mm and the above holes should be drilled in the corner for fastening. Insert a mandrel and a pin into the drilled holes Ø 20 mm and Ø 25 mm (as shown in the drawing) and weld.

Lever arm

For the lever, we cut out a steel plate with a thickness of ≥ 10 mm (see plate drawing below). Drill holes on it:

• Ø 20 mm for mandrel;
• Ø 25 mm for pin.

Bending device lever.

We weld a mandrel and a handle Ø 20 mm and length 550 mm to the lever. To prevent industrial injuries, you can put some kind of protection on the end of the handle (for example, a plastic champagne cork).

Conclusion

After all work has been completed, the welding area should be cleaned from welding slag with a carriage brush. All sharp edges should be “filled” using a fine file.

The device will be used outdoors, and therefore an anti-corrosion coating should be provided - in this case, pentaphthalic paint of the "PF" type is sufficient (just do not forget to prepare the surface - clean it with an appropriate solvent).

At the junction of the lever with the pin, the surfaces should be lubricated with any grease (solidol, autol, grease, etc.). The condition of this unit should be constantly monitored and lubricated (this will greatly facilitate your work and extend the “life” of the device).

Operating rules

The principle of operation of this device is extremely simple - it is easy to understand if you look at the photograph.
Simple safety rules should be followed:

You should not process steel reinforcement with a diameter ≥ Ø 15 mm; before starting work, you should check the technical condition of the device. If the fastenings of the mandrels or pins are loose, it is necessary to carry out repairs and only then begin work;

the workplace should be freed from all unnecessary things.

Source: https://ipmet.ru/svoimi-rukami/stanok-dlya-gibki-armatury/prisposoblenie/

How to make a machine for bending reinforcement with your own hands?

When carrying out construction activities related to strengthening foundations and reinforcing floors, there is a need to bend steel bars. Reinforcing bars are also bent for the construction of greenhouses and steel structures.

For this, homemade and professional equipment is used. When planning to make a machine for bending reinforcement with your own hands, you can develop the drawings yourself or buy them. Let's look at the design in detail and study the technology.

Let's take a closer look at how to make a manual machine for bending reinforcement with your own hands.

A machine for bending reinforcement is equipment that allows you to give the required configuration to reinforced metal products.

Homemade machine for bending reinforcement

Devices are divided into types depending on the following criteria:

• design features;
• drive type;
• diameter of the bending rod.

The machine for bending reinforcement is of the following types:

• mechanical device with manual application of force;
• mechanized equipment powered by an electrical network.

The principle of operation of equipment for deforming reinforcement is to bend a steel rod fixed between roller supports by applying forces from the thrust roller. Special machines allow you to bend metal rods to the required radius.

Manually operated equipment has a number of advantages:

• simple principle of operation, reminiscent of the functioning of a pipe bender;
• reduced weight of the bending mechanism, ranging from 12 to 20 kg;
• mobility, allowing, if necessary, to quickly move equipment;
• low cost, allowing you to make a machine for bending reinforcement with your own hands.

Manual reinforcement bending machine Stalex DR-16

Mechanized equipment with an electric drive is used in industrial enterprises for the serial production of bent elements. The industrial reinforcement bender is distinguished by the following points:

• increased productivity, allowing you to bend 5-6 reinforcing elements in one minute;
• the ability to bend industrial reinforcing metal with an increased diameter;
• increased power of the electric drive station to 5 kW, allowing for significant efforts;
• the ability to work in automatic mode with remote control, as well as manual control;
• a stationary structure that provides for operation of the equipment at the installation site without moving;
• weight increased to 0.5 tons, making transportation difficult without the use of lifting devices;
• a sufficiently high cost that allows you to purchase the device only for industrial use.

In industrial enterprises, the cutting process is often combined with the deformation of rolled reinforcement. For this purpose special equipment is used. The design of such units uses:

• powerful hydraulic drive;
• electromechanical systems;
• electromagnetic mechanisms.

Machine for bending reinforcement with end cap TCC GW 40A

Depending on the diameter of the metal that needs to be deformed, bending devices are divided into the following groups:

• lightweight, bending rods with a diameter of up to 2 cm;
• medium, bending metal rods with a cross-section of up to 4 cm;
• heavy, designed for bending workpieces with a diameter of up to 9 cm.

Improved bending quality is provided by hydraulic devices. When the metal is deformed, there is no cracking or formation of folds, which are a source of internal stress.

The market offers household as well as industrial models of special bending equipment. Noteworthy is the Afacan manual reinforcement bender, offered in the following modifications:

• Afacan 10E. Works with rods with a cross section of 0.6–1.2 cm;
• Afacan 12E. Bends rolled products with a diameter of 1–1.2 cm;
• Afacan 16RT. Deforms rods with a diameter of up to 1.6 cm.

Manual universal benders are also offered, designed for bending reinforcing bars with a diameter of 0.6–2 cm.

Manual bending machines Afacan

It is possible to purchase or rent the following types of industrial bending plants:

• SGA-1. With an installed drive power of 3 kW, it easily deforms rods with a diameter of up to 3.2 cm, ensuring their bending by 160 degrees;
• GW-40. The design of the device with a three-kilowatt drive allows you to bend rolled metal products with a diameter of up to 4 cm by 180 degrees;
• G-40. The kinematics of the device, equipped with a step transmission mechanism, allows you to repeatedly deform a rod with a cross-section of up to 3.2 cm;
• G-50. This industrial installation, equipped with a 4 kW drive station, deforms reinforcing bars with a diameter of up to 5 cm.

When deciding to purchase bending equipment, consult with specialists. They will give professional advice and help you choose the right device depending on the tasks at hand.

Do-it-yourself reinforcement bending – nuances of technology

Before starting work, it is necessary to prepare workpieces of the required sizes. The manual bending process follows a simple algorithm:

• The rod is installed on the landing pad and positioned between the fixing supports.
• The center of the area that will be deformed under the influence of the applied forces is determined.
• The drive lever is manually rotated relative to its axis, acting on the clamped rod.
• The reinforcing bars are deformed to the required angle during the application of force to the lever.
• A curved part that meets the configuration requirements of the documentation is removed.

Machine for bending reinforcement G50 VPK

The design of the equipment allows deformation of the clamped rod in any direction. For safety and convenience of work, it is important to securely fasten the bending mechanism to a stable surface.

Performing bending operations on mechanized devices with a drive requires familiarization with the principles of operation of the equipment and special training. Before starting work, you should carefully study the operating instructions, as well as the safety requirements. The design of many units with a hydraulic or electromechanical drive involves issuing commands by pressing a pedal. In this case, the workpieces are fed into the working area by hand.

Operating procedure for industrial bending equipment:

• Install a bending roller of the required diameter corresponding to the size of the rolled metal section.
• Adjust the device mechanism to the required bend angle, ranging from 0 to 180 degrees.
• Place the rod in the landing area of ​​the working roller, fix it on the support posts.
• Press the pedal to turn on the unit and deform the rod to the required configuration.

Stop pressing the pedal when the workpiece reaches the desired shape. Then remove it from the working mechanism. It is important to follow safety rules and not allow fingers or clothing to get into the rotation zone of the rollers.

DIY reinforcement bending

The design of a homemade bending device is simple. A small-sized device for bending reinforcement includes the following parts:

• desktop made in the form of a steel plate 6–8 mm thick;
• stops fixed on the base that limit the movement of the rod;
• a rotating lever with a pressure roller that deforms steel bars.

A simple design is also possible, consisting of a car jack to which a punch is attached, and a vertical stand with movable supports attached to it. This version of the device is portable. The mechanism allows you to easily bend the reinforcing bar, which touches the movable rollers and bends when the jacking rod moves.

We assemble a device for bending reinforcement with our own hands

Having decided to assemble a simple device for bending reinforcement with your own hands, the drawings can be replaced with ordinary sketches. It is important to provide for the design features of the device, as well as overall and connection dimensions. Let's look at how to make a manual reinforcement bender with your own hands. To carry out the work, prepare the following materials:

• steel channel with a wall thickness of 6 mm and a length of 0.8–1 m for metal structures;
• two steel loops from a cylindrical gate with a diameter of 3–4 cm and a length of 10 cm;
• a corner with a shelf size of 2.2–3.2 cm, a rectangular profile of 4x2 cm and a rod with a diameter of 1.2 cm for assembling the punch and body elements.

Do-it-yourself device for bending reinforcement

You will also need equipment:

• car lift - a jack capable of developing a force of up to 2–2.5 tons;
• electric welding machine with electrodes;
• grinder equipped with a metal circle;
• ruler and scriber for marking;
• hammer and level.

Assemble the machine for bending reinforcement with your own hands, following the sequence of operations:

• Mark and cut 5-centimeter blanks using reinforcement, a rectangular profile and a corner.
• Assemble the punch by welding reinforcing sections into the rectangular profile and connecting the structure in the upper plane with the corner.
• Connect the thrust plate from the channel to the jack rod and fix it in the lower plane of the punch.
• Weld a T-shaped supporting frame using a rectangular profile and a channel.
• At the bottom of the metal structure, weld stops to ensure a fixed position of the jack.
• Weld the corners at the same level to the side surfaces of the vertical post and check the correct location.
• Electrically connect the stationary part of the loop with the angle and vertical post, ensuring free rotation of the moving part.

When assembling a bending machine for reinforcement with your own hands, pay attention to the distance between the upper level of the punch and the lower part of the movable cylinders (loops). The interval must correspond to the dimensions of the reinforcing bar that is planned to be bent.

Using this principle, it is also possible to make a manual machine for bending wire of increased diameter. There are various designs of devices in which the bending process can be carried out without using a jack, using a conventional lever with a roller.

Let's sum it up

Having decided on the design of the device, you can independently make a bending mechanism designed to give steel bars the required shape. It is important to take a responsible approach to developing documentation.

You should use verified drawings from which the bending equipment was manufactured, or create a sketch of a full-scale sample yourself. There is a wide field of activity available for home craftsmen.

The result is a self-made bending device, the use of which will save money.

Source: https://pobetony.expert/tekhnika-i-materialy/armaturogib

Machine for bending reinforcement. Bending reinforcement using a manual machine

Rebar bending machine

Reinforcement is the most popular type of rolled metal, which is widely used in construction. For example, not a single foundation construction can be completed without reinforcement, where it plays the main reinforcing role.

When working with reinforcement, it often has to be bent manually, adjusting it to the required elements of the structure. A striking example of this is the reinforcement of the corners of a strip foundation, where the reinforcement is bent in several places and then placed on the corners of the foundation to strengthen it.

It’s not difficult to make a homemade machine for bending reinforcement with your own hands, and it doesn’t require a lot of tools or time. At the same time, a bending machine for reinforcement will always be available, by the way, especially if you plan to add a second floor to a garage, for example.

Rebar bending machine

There are different types of rebar bending machines. There is an automatic machine for bending reinforcement, there is a mechanical and manual one. However, the principle of design and operation of all machines for bending reinforcement is almost the same.

On a solid base made of wood or a piece of channel, stops are fixed to place bent reinforcement between them. There is also a movable roller with a handle welded to it. When you press the handle, the roller acts on the reinforcement, bending it at the desired angle.

Bending reinforcement using a manual machine is a fairly easy technological process, but to make a machine for bending reinforcement from a channel with your own hands, you will need:

1.  A piece of channel 1-2 meters long.
2.  Metal corner 5x5 cm.
3.  A piece of reinforcing rod.
4.  Inch pipe for holder.
5.  Welding and grinder with metal discs.

To make your own machine for bending reinforcement from a channel like in the pictures, you will first need to assemble the base. To do this, take a single piece of channel, to which reinforcement supports are welded along the edges.

To make manual bending of reinforcement convenient, the width between the supports of a homemade machine must be at least 1 meter.

DIY reinforcement bending machine

Next, a do-it-yourself reinforcement bending machine is fixed on the assembled base. To do this, a half-meter piece of corner is welded on one side of the channel. Immediately behind it it is necessary to weld a small piece of reinforcement or rod for the second movable part of the bending machine.

The second part of the machine for bending reinforcement with your own hands is completely movable. It also consists of an angle, at one end of which a holder is welded, and at the other end, a piece of an inch tube.

It’s not difficult to make a bending machine for reinforcement with your own hands. On the Internet you can find many videos on this topic and, as can be seen in the pictures, the configuration of the machine for bending reinforcement can be different.

Source: https://samastroyka.ru/stanok-dlya-sgibaniya-armatury-svoimi-rukami.html

Do-it-yourself reinforcement bending machine: how to make it?

A machine for bending reinforcement is a necessary device used during construction and industrial work.

With its help, it is possible to manufacture both reinforced concrete and metal structures in the future.

There are cases when you can do it yourself, but most often the thickness of the products is so large that bending can only be achieved with the help of special devices.

A modified bending machine for reinforcement allows not only to give sheets and other materials the desired shape, but also to cut them.

Also, many devices make it possible to make rings, fastening clamps and parts, hinges from wire, pipes or other raw materials, which are used in installation and construction.

Despite the complexity of the design, the machine can be designed and assembled with your own hands. To do this, you will need a prepared drawing, tools and knowledge of the principles of operation of the device.

How does a rebar processing machine work?

For domestic purposes, a homemade manual bending machine for reinforcement is used, first of all, when constructing a foundation.

Without reinforcing parts, it is almost impossible to make a reliable foundation, so the question arises - how to make a frame, how to bend the existing reinforcement?

Of course, today you can find a huge selection of professional equipment on the market, but the price for it can be very high.

Such devices are purchased for industrial purposes, workshops, and construction companies. For your personal purposes, a structure assembled with your own hands is suitable.

If we talk about technological standards, a machine for bending reinforcement must have three shafts.

One of them is persistent (holds the rods at a certain angle and fixes them), the second serves to bend the material around the main shaft - the third. It is also called central.

Depending on the type of structure, there are manual and mechanical machines for bending reinforcement.

The latter has found wide application in everyday life, because it is compact in size and relatively low cost, and, due to its simplicity, anyone can work on it.

There are also hydraulic or pneumatic devices. Thus, a hydraulic machine for bending reinforcement can bend material at an angle of up to 180 degrees, ensuring no breaks.

When designing with your own hands, you must not only adhere to your project, but also pay special attention to the quality of the fasteners (after all, the load on the parts can be very high), and take care of organizing protection.

A slipped rod can cause serious injury.

Therefore, you can often find plexiglass protection on the simplest bending machines for reinforcement, which you can easily make yourself.

Also, if you have experience in assembling machines, you can provide your design with switching speeds to regulate operation.

Some models are equipped with a foot panel, which allows you to easily change the direction of supply of the reinforcement.

How to make a home machine?

In order to handle a manual bending machine for reinforcement with your own hands, you first need to prepare a number of tools.

If you are interested in assembly and construction, then finding such parts and the necessary equipment will not be difficult.

First of all, electric welding is needed. For a device that can handle even sheets, you will need a reliable base, a punch, clamps and a clamp.

1 - bending disk mounted on a vertical shaft; 2 - finger; 3 — hole for a finger; 4 — stops; 5 - reinforcing bar; 6 - axial stop

The punch can also be assembled from metal corners.
Suitable for assembling and cutting channels. The base is cut precisely thanks to the latter.

The fifth or sixth channel model number is suitable here. But the length should be chosen small - no more than 50 centimeters.

A machine for bending reinforcement will consist of a lever, a punch, a clamp and a main part on which pipes and rods or sheets will be located.

First, an axis for clamps is made on the base at the selected location - it will be more convenient to navigate along it.

However, remember that the clamps should cut into a length 6 millimeters shorter than the blanks made for the base.

They are also kept at a distance of several centimeters from the ends - without such an indentation it will be impossible to correctly distribute the load.

A wire with a diameter of no more than 15 millimeters is suitable for the lever.

The base is bent in the shape of the letter “P”, and it is welded using a welding machine to one of the stable corners. There should be a space of approximately 5 millimeters from the edge.

Next, steel rods are welded to the punch, and chamfers are removed from the ends of the workpiece at an angle of 45 degrees.

To properly weld all the parts and check the angles, evenness of the structure, and joints, you can first use a vice, and then carry out welding work on them.

Thus, it will be possible to make a preliminary frame, which can always be redone.

In addition, where possible, it is better to use bolts instead of welding. This way you can always reassemble or disassemble your structure and supplement it with details.

If, however, preference is given to welding work, then it is first necessary to carry out a test bending procedure. If all stages go well, then you can weld the parts together.

How to add cutting elements?

In addition to the fact that you can give different shapes to products using a homemade device, you can actually make a machine for cutting reinforcement that will combine both functions: cutting and bending.

Of course, it is much more difficult to design it with your own hands, but it also has more applications. The simplest option is to make a carved disk on the base using a grinder.

A machine for cutting reinforcement can be made in any room. Its design can be either collapsible or solid.

In the first case, such a device can be easily dismantled and assembled in a new location.

Speaking constructively, in addition to shafts for bending, a machine for cutting reinforcement must consist of a motor, a cutting blade or disk, and the surface itself where the blade will be fixed.

Knowing the principle of operation, you can easily make your own changes to the feeding mode.

The power must be determined in advance, before the rebar cutting machine is assembled.

Professional devices are distinguished by high power – about 2000 W.

Despite the fact that for domestic purposes you can choose smaller values, do not forget that metal remains metal in any situation, and cutting it requires a large load.

Another characteristic directly related to engine power is gear selection.

Most often this is a belt or friction transmission. The gearing can be chain, worm or gear, it all depends on what materials you have at hand.

The belts provide silent operation, but the likelihood that such a design will slip is very high, so it is better not to choose this type of transmission.

A homemade machine for cutting reinforcement is also equipped with a vice that does not allow the material to leave the cutting axis.

The most common choice for a knife at home is either a carbide disc or an abrasive wheel. The type of device depends on the tool feed.

It can have front, bottom or pendulum feed.

The assembly principle is extremely similar to the design for bending. So, a machine for cutting reinforcement begins to be made from a frame, which in turn is assembled from metal corners.

It is necessary to attach a channel to the resulting base, which will play the role of a guiding axis, and all other parts are attached to it.

Only the engine requires an additional reinforced pipe.

The bearings that are needed to support and drive the mechanism are mounted in the upper frame, and the shaft and motor are attached with bolts.

In addition, where the disk will be secured (also with bolts), you need to take care of the protective casing, because a spark will occur when it comes into contact with metal.

It is better to check the operation of the machine at idle speed and using soft metals. Only then, if everything works fine, you can check the installation at full capacity.

The main thing is that the distance from the bending shaft and the disk is at least 40 centimeters.

Source: http://stroyremned.ru/stroitelstvo/stroitelnie-instrumenti/831-gibochnye-stanki-dlya-armatury.html

Do-it-yourself device for bending reinforcement

In the process of performing many construction works, the need to bend reinforcement often arises. Steel rods of various diameters are actively used in the manufacture of reinforced concrete and other structures. They allow you to increase their strength characteristics several times and reduce the consumption of basic materials. To achieve this, bending of reinforcement must be carried out in accordance with generally accepted standards.

To perform this operation, you should use special machines, which are offered by many well-known manufacturers. There are also publicly available drawings that describe in detail the design of this type of equipment. Making a machine for bending reinforcement with your own hands is not difficult for a person who has basic skills in engineering.

A reinforcement bending machine means special equipment with which steel bars of various diameters can be given almost any shape. Depending on the design and principle of operation, it is divided into manual and mechanized. In the first case, the operation of the machine is possible due to the effort of the worker.

Manual bending machine

A manual machine for bending reinforcement is very simple. It consists of a small work surface, which is usually round or square in shape. There are pins attached to it that limit the movement of the reinforcement. This type of equipment is also equipped with a lever. It is secured to the plate with a screw.

To bend, you need to insert a reinforcing bar into the mounting hole, and then secure it with rollers. When the rod is well secured, the lever is set in motion. As a result, the position of one of the shafts changes, which begins to put pressure on the fixed rod.

In this simple way, the steel rod is given the desired shape in accordance with the established requirements. A manual bending machine for fittings is more suitable for home use. It is able to cope with rods whose diameter does not exceed 12 mm. A bending machine of this type of industrial production will cost approximately 3-5 thousand rubles.

Features of mechanized machines

At industrial enterprises and large-scale construction, where they constantly work with large batches of rolled metal, driven machines are mainly used for bending reinforcing bars. Equipment of this type is capable of providing fairly high labor productivity, which is highly valued in such areas.

Typically, mechanized machines are capable of bending reinforcement using the following types of drive:

• hydraulic (provides a more accurate result of work, which cannot be achieved manually);
• electromagnetic;
• electromechanical.

Electromagnetic drive

Depending on the power characteristics, this equipment is also divided into the following types:

• lung. Capable of working with fittings whose diameter does not exceed 20 mm;
• heavy. Will cope with rods up to 40 mm;
• super heavy. Capable of bending rods whose diameter exceeds 40 mm.

Regardless of the main operational features, mechanized equipment operates on the same principle. In such bending machines, the role of the working element is performed by a round disk. It is usually mounted on a vertical shaft. The central and bending cylinders are located on the disk itself.

When working with this equipment, fittings are installed between them and securely fixed to the housing racks. After this, the shaft begins to rotate, which sets the bending cylinder in motion. It is he who bends the reinforcing bar around the central bushing along a radius that corresponds to the number of revolutions of the disk around the axis.

Hydraulic drive in machines and machines

Is it possible to make a bending machine with your own hands?

A do-it-yourself reinforcement bending machine has a fairly simple design, but is capable of performing a large amount of work. Equipment of this type can be used for any purpose, as it is easy to use. Its design is based on a frame. It is to this that the thrust block and lever are attached, with the help of which the bend can be made.

To make such a device yourself, you need to have basic welding and plumbing skills. Otherwise, it is impossible to ensure the quality of all connecting nodes. Also, if you cannot find good stops that have a sufficient diameter, you need to work with a lathe. As an alternative, large diameter reinforcing bars can be used.

To correctly and easily carry out all the necessary operations, you should prepare the following tools:

• welding machine;
• hammer and file;
• Bulgarian;
• an electric drill equipped with metal drills.

Technology for performing the work (option No. 1)

To get a machine for bending metal rods, you need to prepare the following materials:

• sheet iron with a thickness of 10 mm for the manufacture of the base;
• sheet metal with a thickness of 6 mm for the hinge;
• corner with a thickness of 10 mm for the base or frame;
• reinforcement studs with a diameter of 50 mm or more for stops;
• a metal pipe that acts as a lever. Recommended length is about 50 cm, diameter is 25 mm.

After determining the required dimensions of the machine, they begin to mark the metal parts and connect them using a welding machine. The base of the equipment is secured with pins and hinges with a lever. The device body itself is installed at a height that corresponds to the height of the worker.

Technology for performing work (option No. 2)

To make your own machine for bending small-diameter steel bars, you need to follow these instructions:

1. Pieces 5 cm long are cut from corners with shelf sizes of 25 and 32 mm. The same actions are carried out with a square profile and reinforcement with a diameter of 12 mm.
2. Two pieces of reinforcement are inserted inside the profile and welded.
3. The corners are also connected to each other using a welding machine.
4. The resulting blanks are welded and installed in the thrust part of the jack. The location of the punch should be carefully controlled, since horizontal deviations are unacceptable.
5. A T-shaped frame needs to be made from a rectangular profile. The dimensions of this structural part of the equipment are as follows: height – 40 cm, width – 30 cm.
6. You can ensure a stable position of the jack during bending using stops that need to be welded to the horizontal part of the frame.
7. It is necessary to weld two corner pieces with a flange size of 25 mm onto the side of the frame. Hinges for the gates are attached to their surface, which will later act as stops. Calculate the distance between the end of the punch and the stops to match the diameter of the reinforcement that will be used in the future.

Bending machine drawing

Is it possible to bend metal rods without special equipment?

Very often situations arise when you need to bend reinforcing bars, but a special machine (purchased or homemade) is not available. In this case, working manually is very dangerous. During all the necessary manipulations, the reinforcement may simply spring back, which will lead to serious injury.

To carry out the bend, you can use a regular channel. You need to make holes in it on opposite sides. If you have sufficient physical training, you can bend reinforcement in this way, the diameter of which does not exceed 8 mm. But we should not forget that the accuracy of this method is low.

You can also bend the reinforcement using two steel pipes. To carry out this operation efficiently, you should use elements with a diameter of 15-20 mm. In this case, the ends of the rod are inserted into pipes, one of which must be stepped on and the other pulled towards you. As a result, bending will occur, which is what needed to be achieved.

on topic: Manual bending machine

Source: https://steelfactoryrus.com/prisposoblenie-dlya-gnutya-armatury-svoimi-rukami/

DIY reinforcement bending machine

In everyday life, when carrying out construction activities, work is periodically required that requires bending work from building materials such as reinforcing bars. It is very difficult to bend such thick material by hand.

That is why a bending machine for reinforcing material was invented. This device has become widespread in rolled metal and has reached industrial scale. Many people cannot afford the purchase of expensive equipment, however, a way out of the situation has been found. A homemade bending machine was created to make working with metal easier for many people.

Basic concepts and scope

The bending machine is designed for bending reinforcement of various diameters and metal rods to give the material the required shape. Such equipment is used both in industry and in everyday life. It can be used to make greenhouses. Widely used in reinforcing foundations and concrete structures. If you need to make decorative elements from metal rods, then such equipment will serve as the right tool.

Before we begin to get acquainted with the machine itself, it is necessary to become familiar with the classification of fittings.

Classification of fittings

Armature

In our country there is a mandatory GOST 52544 - 2006 for the creation of reinforcing bars. According to it, reinforcement is considered to be a metal rod with a round cross-section, as well as having a smooth surface or a surface with a periodic profile. The diameter of the rod ranges from 4 mm to 80 mm, and its length reaches 12 meters.

The main purpose of this rolled metal element is to strengthen reinforced concrete structures, as well as structures that require the presence of reinforcing bars

A 240 (a 1)

This species has a smooth surface with a diameter ranging from 4 mm to 40 mm. It is used as a connecting and distribution component of the structure.

A 300 (a 2)

This class has a surface with a periodic profile. The diameter ranges from 10 mm to 80 mm.

A 400, a 500 (a 3)

Such fittings have a corrugated surface. Diameter varies from 6 mm to 40 mm. This class of reinforcing bar is in great demand in construction. It is used in the construction of residential buildings and office buildings.

A 600 (a 4)

The scope of application of such products is limited, therefore their diameter is also limited from 10 mm to 32 mm. This class is used for welding work. The main composition of such reinforcement includes low-alloy, heat-strengthened steel.

A 800 (a 5)

This class is classified as a high strength class. The surface is corrugated, the cross-sectional diameter increases from 6 mm to 40 mm. Such rods are used in the formation of welded structures, as standard and load-bearing elements.

A 1000 (a 6)

Belongs to the class of working rods. Any welding is suitable for this class. Area of ​​application: construction of high-rise buildings and large structures. Low alloy steel allows cross-sections from 6 mm to 32 mm.

Now that we know the material called fittings, we can move on to familiarize ourselves with the machine, its structure and operation.

Tip: Before you start work, be sure to familiarize yourself with the classes of reinforcement and their purpose. Only after this can the planned work begin.

Varieties

In the metal rolling business, there are only a few types of bending equipment for reinforcing bars:

Mechanical devices

Reinforcement bending machine

The mechanics of this equipment are based on a disk that performs rotational movements. On the surface of the disk there are central and bending fingers, with the necessary gap between them, in which the metal rod necessary for the work will be placed. When the disk produces a rotational movement, the reinforcement is clamped between two rollers and, under the influence of the rotational force, bends along the plane of the central pin. Such machines can simultaneously bend several metal rods.

Manual machines

Homemade bending machine

They can be classified as portable devices in your toolkit. Such machines are extremely lightweight and can be installed anywhere and on a flat surface. Of course, with such a device it will be impossible to bend large-diameter reinforcement. This design of the unit is quite simple and does not require large expenses.

Machines equipped with electric drives

Stationary machine for bending reinforcement

This type of device refers to industrial machines. This is where the production of bent products on a serial scale is carried out. The performance of the unit is very high. It takes only 10 seconds to complete one operation of bending a rod. In this case, work with all diameters of reinforcement is allowed. In turn, such machines are divided into three types:

Equipment for light fittings

The diameter is limited to 20 millimeters.

Equipment for heavy fittings

In this case, you can use a diameter from 22 millimeters to 40.

Equipment for extra-heavy reinforcement

The permissible integral of diameters is from 40 mm to 80 mm.

Stationary machines are quite powerful and the power consumption of the drive can reach 5 kW per hour. However, the weight of such a machine is about 400 kilograms. What makes this mechanism motionless. A huge advantage of this machine is its fully automatic operation.

At the same time, the operator applies a minimum amount of effort. The most important point in the operation of such a unit is its rigid stationarity. Those. its position must be strictly centered and located on a flat surface.

When the types of bending equipment are sorted out, it's time to familiarize yourself with the design of the bending tool.

Design of a homemade bending machine

Manual machine

The bending device itself is very simple in design and does not require enormous costs. We will look at the design named after I. S. Zamkov. Such a device has only 11 elements of its structure:

Machine body

The base of the machine on which the entire device is assembled.

Plate

It is the slab that connects the base and mechanisms throughout the structure.

Rollers located on the axial pin and stop

The very same rollers that will act on the reinforcement during operation are put on the fixed fingers.

A cracker placed on a bending finger

The same stop that will prevent the workpiece from sliding and the work will be completed safely.

Plank

It contains a bending finger and a handle for performing physical activity.

Curling finger

Located on the bar and plays a major role in bending the reinforcing bar.

Axial pin

All bending will be done around this finger. It is necessary to give the workpiece a correct and uniform shape.

Emphasis

A thrust pin against which the reinforcement will rest during operation.

40 mm roller

Used when it is necessary to bend a rod with a diameter of 6 mm to 8 mm.

28mm roller

This roller is used when the diameter of the rod is from 10 mm to 14 mm.

Based on the above, anyone can assemble such an instrument without having any special education.

Advice: Before you start assembling your invention, you need to find suitable drawings on the Internet or in other literature; with the help of them you can assemble exactly the tool that will meet your requirements.

Assembly process of a machine for bending reinforcement

The process of bending reinforcement

Advice: If you want your unit to stand in a certain place, then it is advisable to prepare the foundation in advance so that the future machine stands level.

So, let's begin.

First thing

It is necessary to make a bed, or base of the machine. When it is ready, the axial pin is welded onto the metal plate. Next, it is welded to the frame using a welding machine.

Separately

A handle with a penny is made, on which the bending finger and a hole for the central finger will be located. A thrust pin is welded onto the plate. The fingers must be positioned in such a way as to safely place the reinforcement between them. Bushings (rollers) are placed on the fingers.

Tip: If your choice of technical characteristics of the machine remains unchanged, then you can weld nickels on top of all three fingers. This will provide protection from the rollers jumping off during operation.

At this point you can finish the assembly process and try to bend the first reinforcement.

General reviews and summary

There are a huge number of different reviews about this type of tool on the Internet. Everyone expresses their opinion. However, any construction work where reinforcement is used becomes difficult and sometimes impossible tasks.

At its core, this tool is an ordinary pipe bender, which is designed on the same principle. It can be concluded that this equipment is extremely necessary in work using reinforcing bars. So, if you plan to bend reinforcing bars, then be sure to purchase a rebar bender.

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homemade bending equipment for reinforcement:

operation of the bending machine:

operation of the factory unit:

Source: https://stanki-info.ru/gibochnyj-dlya-armatury-svoimi-rukami.html

Types and designs of bending machines for reinforcement

In order to perform work on changing the profile of corrugated and smooth reinforcement, devices for bending it are used. Such devices are widely used in construction for the production of various profiles reinforcing concrete products from reinforcement.

Types of manual bending machines

The design of devices for bending reinforcement (reinforced rods) involves the use of several stops (usually three) made of steel material and a power drive, which can be either various lever mechanisms or the movement of the stops themselves.

There are two main types of such devices: mechanical and manually driven machines.
Devices with a mechanical bending drive can use both electric and hydraulic methods as a power drive.

The hydraulic drive provides a smoother change in the profile of the reinforcement, which allows you to achieve better and more accurate work results.

In the designs of manual devices for bending reinforcement, the use of the worker’s muscular strength is used as a power drive. In order to ease physical stress, especially when it is necessary to work with a product that has a large cross-section, a power lever is used in machine designs. This lever, by providing a larger arm, can significantly facilitate the work of bending reinforced rods.

Depending on the design, manual devices for bending reinforcement can be divided into so-called conditionally manual and manual.
Conditionally manual machines for bending reinforced rods include devices in which a mechanical drive driven by manual force is used to change the profile of such a product. Typically, such devices have a flywheel in their design, driven by the physical impact of the worker.

When working with reinforced rods, which have a cross section of over 16 millimeters, there is a need to use mechanically driven bending devices for such a product. Since the efforts that must be made to bend such reinforcement are quite significant, and performing work manually is accompanied by great physical effort and can lead to incorrect and poor-quality bending operations.

When working with reinforced rods up to 16 millimeters, you can use manual bending devices. Depending on their mobility, such machines can be divided into two types: stationary and portable.

Depending on the trajectory applied to bend the force vector, manual machines can also be divided into those that use a vertical force vector and a horizontal one.

Devices with a vertical vector of force application allow for work with large diameter reinforcement, since they are more convenient for carrying out significant loads due to the fact that they can use the entire body weight of the worker. But for the purpose of more accurate and controlled bending of reinforced rods of small diameters, it is more advisable to use manual devices with a horizontal vector of force application.

Stationary devices for bending reinforced rods have a fixed base (frame) in their design. Which usually has large dimensions and weight, as a result of which such devices are usually used in specially designated areas.

Depending on the manufacturing method, manual machines for bending reinforced rods can be divided into industrially produced and self-made. In industrial devices, for convenience and quality, various devices can be used that provide visual control of the bending angle of the reinforcement.

They are also equipped with anti-slip (rubberized) handles.

In most cases, such machines are used in official production. It is industrial devices for bending reinforcement that have all certificates of conformity and can be approved for use by regulatory authorities. Because for industrial devices, strength tests are carried out, which concern all the main components of the mechanism, from the handle-lever to the stops.

Homemade, stationary manual bending machine

To work with large volumes of changing reinforcement profiles, it becomes necessary to use stationary devices for bending reinforced rods. Such devices make it possible to perform a sufficient number of operations necessary, for example, during the construction of concrete monolithic structures.

The design of the stationary device is based on the use of a frame on which a thrust block and a device that allows bending (lever) are mounted.

To manufacture such a device, welding and metalworking skills are required. Since the necessary reliability of the units can only be ensured by high-quality frame connections.

In addition, if there are no ready-made stops made of durable material of the required diameters, it becomes necessary to use a lathe. If it is not possible to use a lathe to make stops, then you can take reinforcement with large cross sections.

Among the main tools for making a machine, we can highlight:

• welding machine (cutter); • electric drill equipped with metal drills; • hammer;

• file.

When manufacturing the machine you will need the following materials:

• sheet iron (from 10 millimeters thick) to make the base; • sheet iron (from 6 mm thick) to make a loop; • metal corner (from 10 millimeters thick) to form the base of the device (bed); • studs (reinforced rod or “fingers”) with a diameter depending on the type of reinforcement with which bending is planned (usually for work with a cross section from 6 to 12 millimeters, studs with a cross section of 55-60 millimeters are required) for the manufacture of stops; • a pipe for making a handle - a lever with a length of 500 millimeters and a diameter of about 25 millimeters.

Among the main design details of such a stationary manual machine for bending reinforcement are:

• bed;
• bed legs; • device base; • stops (pins) – three pieces; • a loop; • handle-lever. The manufacturing process of such a device boils down to marking the material, welding the frame and legs of the device. Moreover, the height of the base of the device must be selected taking into account the average height of the worker who will perform the process of bending the reinforcement.

Then the base of the machine is made from sheet iron, on which pins and a loop with a handle-lever are attached using a welding machine.

Homemade bending machine

The first method of making a machine for bending reinforcement with your own hands. This method is the simplest and does not require much time. One important nuance is that you must have a wheel with a mount and a turning mechanism. You will need: · A wheel with a metal turning mechanism. In principle, a rotating mechanism from any other device can be used. · Roller with large bearing. · Robust, large-section reinforcement.

· A metal tube of small diameter (the fittings should fit into it without difficulty). · Metal corner. · Welding machine, angle cutting machine (grinder). Step-by-step instructions for making the machine. All that is required from the wheel to make the machine is a rotating mechanism. The rest of the part is simply cut off with a grinder, so if you have the mechanism itself, you can safely use it.

The main requirement for this part is satisfactory mechanical strength. Firstly, the rotating mechanism or shaft must withstand the planned load, otherwise the attachment point may be damaged or the rotating mechanism may be completely destroyed. Secondly, the metal walls from the cut wheel must be of sufficient thickness and strength. A metal bending lever will be welded at this point.

The small thickness of the metal will not allow a high-quality weld at the fastening site and can lead to deformation of the walls when a large force is created. So the wheel is cut. Manufacturing a holder for bendable reinforcement. To do this, take a metal roller from the bearing. Using a corner trimmer (grinder), you need to make a cut strictly in the center. The dimensions of the cut must ensure reliable fastening of reinforcement of any size.

If there is no such roller, it can easily be replaced with several pipes of different diameters. To do this, small pieces are cut from the pipes and inserted one into the other. All tubes are welded to the base onto the stationary part of the rotating mechanism. The cut is made according to the diameter. The wall thickness must be strong enough to withstand the load from the bending reinforcement.

Regardless of what the holder is made of, it must be welded to the stationary part of the rotating mechanism. To make a lever, durable metal reinforcement with a large cross-section is suitable. The reinforcement must be bent L-shaped, at a distance no greater than the height of the roller from the bearing. At the same distance, a small piece of reinforcement is welded onto which a metal tube is placed.

The entire resulting structure is welded with two ends of the reinforcement to a metal plate. You can pre-drill holes in the plate to the diameter of the reinforcement and weld each of them into the hole to provide a greater margin of safety. The plate with the finished lever is welded to the end of the cut part along the entire contact line. To do this, the end must be sanded to eliminate all possible burrs and irregularities.

If you try to weld the lever to the end of the cut-off wheel wall without a plate, the fastenings will be much weaker due to fixation at only two points. A metal corner is attached to the bottom of the turning mechanism using a bolted connection. The corner should be approximately the same size as the diagonal of the square mount. The mechanical strength of the angle is calculated on the basis that the machine for bending the reinforcement must be fixed in a vice.

The disadvantage of such a machine will be the direct dependence of the maximum thickness of the reinforcement that can be bent on the mechanical strength of the rotating mechanism. The second manufacturing method is suitable for anyone who could not get a wheel or any other part with a turning mechanism. In this case, you will need: · A roller from a large bearing. · Metal flange. · Thick sheet metal. · Powerful reinforcement with large cross-section. · Round bearing. · Welding machine, grinder.

Step-by-step instructions for making the machine. First you need to cut a flat circle of the flange from the pipe. A lever is welded to it, bending the reinforcement. The lever manufacturing technology can be taken from the previous method, but instead of a separate plate, weld the lever directly to the flange.

The cylinder for securing the bending reinforcement is made by analogy with the previous method, only it is welded to a stationary thick metal plate, which will serve as the basis for the entire machine. Between the plate and the flange you need to weld a regular round bearing, the inner part of the bearing is welded to the bottom plate, and the outer part to the metal flange. A metal corner should be attached to the base plate, as in the previous method, to secure the machine in a vice.

This machine, unlike the previous one, is suitable for bending large-section reinforcement.

Source: https://metmastanki.ru/samodelnyj-stanok-dlya-gibki-armatury

How to make a bending machine for reinforcement with your own hands

The reinforcement bending machine was designed to facilitate labor and reduce the time allocated for the reinforcement procedure. To make a bending machine for reinforcement with your own hands, you need to prepare drawings, assembly instructions and all additional materials.

How the device works

The machine is used in the construction industry for reinforcing concrete using strong steel rods. Previously, this procedure was carried out manually and required additional physical effort; modern machines allow you to bend rods of various sections at the desired angle as quickly as possible. To operate the machine, you need to set the desired mode. It is used to process carbon and reinforcing steel elements, including metal strips, threaded rods and rolled bars.

The operation scheme and characteristics of the machines are identical regardless of their type. The standard design has three rollers: center, thrust and bending.

The bending procedure is carried out around the center roller, while the support roller holds the product in place. The workpiece is placed on the working disk, and after starting, the reinforcement is fixed with a bending roller.

After selecting the mode, the product is bent at the desired angle. When the operation is completed, the bender releases the processed part.

Making a manual machine for bending reinforcement with your own hands

Products that work in a horizontal plane are chosen as a handy machine. The reinforcement is secured between the supporting element and a fixed metal pin. A rotating unit with a bending pin and an extended lever is placed on it. During operation, the rod bends around the central pin towards the desired angle. This bending machine is suitable for rebar with a diameter of up to 14 mm.

It will require a frame - a 12 mm or 14 mm channel, at least one meter long. It is welded to two metal pipes, which are driven into the ground. To create a stop, two corners are welded to the top flange of such a channel. The lever is made of pipes welded at an angle of 90 degrees. To increase the force on the lever, put on an extension cord of at least 1.2 meters.

A corner is welded to the upper part of the lever, due to which the end of the reinforcement will be fixed during bending. It is necessary to ensure that the corner is located on the same level with the top flange of the main channel.

The strength of the unit should be three times greater than the force for bending the products, especially if the reinforcement is needed for large construction projects. In addition to the drawing, the following tools are prepared:

• grinder and a set of cutting and grinding discs;
• electric drill with steel drills for quick cutting;
• electrodes and welding installation;
• mechanic's kit, including a hammer, pliers, punch, sledgehammer and chisel;
• vice for fixing the structure.

The material for the bending machine is a bearing, a square or corner profile 25x25 mm and 60 cm long, a steel rod with a diameter of 12-25 mm, and bolts 2x5 cm. It must be taken into account that the finished machine will be quite massive and weigh several kilograms.

Jack machine

If desired, you can design a universal device that can bend not only fittings, but also pipes. To make a machine from a jack, you will need to prepare a model capable of lifting up to two tons of cargo.

1. The steel profile is cut into pieces up to 5 cm.
2. Then select reinforcement with a diameter of at least 12 mm.
3. The ends of the rods are placed inside the profile and welded together.
4. The resulting structures are welded to each other, the result should be a device that plays the role of a wedge for bending.
5. The working part is fixed on the jack, aligning it correctly vertically and horizontally.
6. Afterwards, a T-shaped supporting structure is made with a height of 40 cm and a width of 30 cm.
7. Strips in the shape of pipes are cut out of the corner, welded to the frame and the jack is fixed using them.
8. Angle sections are welded to the side parts of the supporting frame, then hinges are attached to them.

The jack is inserted into the prepared place, then you need to place a piece of workpiece on the bender and work with the handle. As a result, the reinforcement will bend 90 degrees and achieve the desired bend radius.

Corner machine

The design from the corner is considered simpler and is made according to the following instructions:

1. Pieces of 20x20 or 30x30 up to 1 meter long are cut from the corner. Dimensions and thickness depend on the diameter of the reinforcement bars.
2. A pin is welded to the U-shaped profile base;
3. Next, cut off a piece of pipe with a diameter that allows you to freely put it on top. A part of the angle is welded to it, making sure that the pipe and the angle are perpendicular.
4. The corner with the pipe is put on the pin, noting where the smallest section was welded. Then it is removed and another piece of the corner profile is welded to the frame.
5. Another part of the reinforcement is welded to the end of the movable structure, which will need to be held on during operation. A handle is put on it; it should not be made of metal.
6. Afterwards, legs made of durable reinforcement are welded to the frame.
7. The rubbing surfaces of the pipe and axle are lubricated with grease or machine oil to facilitate the process.

The reinforcement bender, ready for work, is installed on a large brick or stone so that it does not jump off during work. Afterwards, a reinforcement rod is inserted into it and they try to bend it. The quality of the device is checked by how correctly it will bend the inserted reinforcement.

Source: http://StanokGid.ru/metall/kak-sdelat-gibochnyj-stanok-dlya-armatury-svoimi-rukami.html

How to make a machine for bending reinforcement with your own hands

24.04.2018

Every building begins with a foundation, and this truth was established in the science of construction from the very beginning.

To make the foundation stronger, a reinforced belt is installed in it, which is also used when installing walls, pillars, and some types of floors.

The reinforcement itself is made straight, but for further use, it often needs to be bent at different angles. It is for this purpose that you can make a special bending machine with your own hands, which will significantly save money.

Types of machines for bending reinforcement

Before you make a product for bending reinforcement yourself, you should familiarize yourself with the varieties of this device, as well as find out the strengths and weaknesses of each product individually.

A simple homemade device for bending small diameter rods

Main types of machines:

• Mobile. They are light in weight, which allows the device to be transported. Greater convenience is due to the fact that the bending machine can be used near a construction site. At the expense of mobility comes limited functionality.
• Stationary. It cannot be moved quickly, as it requires complete or partial disassembly of the metal components of the product. But due to this method of placement, the stationary machine allows you to work with fittings whose diameters are varied.

Types of machines according to design features:

• Hydraulic equipment. They are in demand and popular, since the components of the hydraulic system have a low price policy.
• Pneumatic. More expensive machines made of metal elements that require periodic adjustment and calibration.
• Manual. Simple design without the possibility of installing an automatic control system. All operations for bending reinforcement are performed manually.
• Electromechanical. A machine that operates only with a constant supply of electric current.
• Electromagnetic equipment. They operate on the principle of an electromagnetic field. Like electromechanical ones, they require a constant supply of current.

The simplest are manual machines. Their design is simple and, provided the appropriate drawings are available, almost every user can make such a machine on their own.

How does reinforcement bend? Process concept

The main question: how to bend reinforcement correctly?

Laying reinforcing bars in concrete to strengthen the structure is called reinforcement. The reinforcement frame increases the strength of the foundation or concrete walls several times.

Corners are important nodes in any structure - these are the most difficult to reach places for laying reinforcing bars. Of course, you can lay the product at a right angle by welding the rods at the joint, but this will compromise the strength. Therefore, they use machines for bending reinforcement, which help bend the product at the required angle without damaging it.

Simple DIY solution

Having a device for bending reinforcement at hand, you should know several basic principles of working with it, since incorrect use of the tool will lead to a violation of the strength of the reinforcing bars. The basic rule is not to use improvised means for bending reinforcement, but only special tools, which are based on a mechanical method of influencing the product.

Basic rules for the reinforcement bending process:

• Do not make cuts in the bend areas using a grinder or hacksaw in the bend areas. This is the main mistake due to which the product suffers and its mechanical properties are significantly reduced.
• Do not heat the bend area. This simplifies the bending process, but, as in the previous paragraph, the strength of the product deteriorates.
• It is necessary to observe the correct bend radius, which should be at least 10-15 diameters of the reinforcing bar. An acute angle should not be made.
• Do not use improvised means such as a sledgehammer or hammer. Such a crude bending process only leads to weakening of the product.

What is needed to make a homemade bending machine

The set of tools and materials for making a homemade bending machine is small and includes what can be obtained without any problems. A purchased machine for bending reinforcement

Source: https://viascio.ru/raznoe/kak-sdelat-stanok-dlya-gibki-armatury