Do-it-yourself profile bending machine. How to make a machine for bending a profile pipe with your own hands: drawings, video

IN household a machine for bending profile pipes is not used so often that it is necessary to buy expensive factory-made equipment.

If such a need arises, a simple pipe bender can be made privately, having previously decided on what type of this structure is suitable for completing the task.

This article examines in detail the types of pipe bending machines, describes the principles of their operation and construction methods.

There are many equipment modifications for changing the configuration of profile pipes. This is due to the minimum bending radius. If you neglect this important parameter, at the point of bending, the strength characteristics of the material will change for the worse. You also need to know some technological subtleties and take them into account during work.

When choosing a design, take into account the workpiece material, diameter, and wall thickness.

Classification of bending machines by drive type

Depending on the type of drive, machines designed for bending any pipes are manual, electromechanical and hydraulic.

Manual. These are extremely simple mechanisms that can be manufactured independently even by a person not versed in the intricacies of working with metal.

Manual, self-made machine for bending profile pipes - indispensable assistant in the manufacture of frames, decorative elements, self-installation ventilation systems

Electromechanical. Such a machine has a drive in the form of an electric motor - stepper or conventional, connected through a lower gearbox. The latter solution ensures high-quality bending due to correct stress distribution.

The structure of the mechanism is not simple; in order to make it, you need special knowledge and at least a little professionalism.

Electrically driven roll forming machines in most cases have the form of a 3-shaft design. A profile pipe is passed between the rollers. An element located in the center can change its vertical coordinates. When the central shaft rotates, the profiled pipe changes its geometry

Hydraulic. The drive in this model is manual. Unlike the simple manual design, here a hydraulic cylinder is included in the design, which significantly reduces the muscular effort applied during bending.

Rollers make it possible to bend a profile pipe in any desired direction. A manual profile bender with hydraulics, with its light weight, can bend pipe assortments up to 10 cm wide.

The hydraulic cylinder of the roll forming machine exerts pressure on the surface of the pipe by mechanical impact. This causes the cylinder rod to move. As a result of the resulting load, the product is deformed. The pressure in the piston can be increased in two ways - manually and using an electric pump

Types of pipe benders by installation method

There is a division of profile benders depending on the installation method. There are stationary, portable and wearable equipment. Stationary machines can take the form of a simple concrete slab with rods or solid equipment.

Compact portable pipe benders have a support stand, but the portable model does not have a support; it is selected each time the equipment is used.

Classification of machines by bending method

The design of the profile bender and its performance will depend on the bending method. There are 3 main bending methods. The first is extrusion, when the geometry of the profile pipe is changed using a deforming roller that acts as a punch. In this case there is no matrix.

To perform the operation, 2 strong supports are required on opposite sides of the bend, which act as a matrix. Rotary shoes or rollers are used as such supports.

Since the force increases gradually and is constantly perpendicular to the pipe, the method makes it possible to obtain a good final result. We apply the method only for small-scale work.

The second is pressing. To obtain a bend, the principle of a bench vice is used - a piece of pipe is placed between the matrix and the punch.

To obtain a high-quality bend, the profiles of the latter must exactly repeat the geometry of the part. And also in the calculation it is necessary to take into account the residual deformation of the metal. At home, this method is applicable when great accuracy is not required.

The machine for changing the shape of a profile pipe by rolling consists of three cylindrical rollers, a chain, a drive and a base. The diameter of the rollers must correspond to the parameters of the deformable profile pipe

The third is rolling - a universal method used for bending both thin- and thick-walled pipes. The bend is produced by pulling the workpiece between rollers - one rotating and two supporting.

In addition to those mentioned above, pipe bending can also be carried out using the following methods:

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The bending of the pipe is carried out using three rotating rollers. In this case, the bending radius determines their location relative to each other

When bending a pipe with a crossbow pipe bender, it rests against two rollers, and the template, which is located on the rod of the device, bends it between the supports

The principle of operation of this pipe bender is to bend the pipe in a cold state by rolling it with a roller around the bending block

For marking work surface lay a vertical axis and, at the distance indicated in the drawing from the edge and axis, mark the location of the lower holes. Then mark the location of the upper holes, retreating the required distance from the edge. Connect the center of these holes with a straight line and lay equal segments on it.

The axes of the intermediate holes will be located at the intersection of the marks made with the inclined axis. Holes on the working surface are needed to be able to adjust the bending radius of the profile workpiece. Since the working surface consists of two mirror-like parts, the second one is marked in the same way.

The height of the machine is determined by the parameters of the jack and the distance indicated in the drawing by the symbol “a”. To bend a profile pipe 15 mm wide, this gap when the jack is not in use should be approximately 20 mm.

In this design, the force transmitted by the punch is concentrated in its upper part. As a result of this effect, the outer radius of the pipe is subject to tension, which can cause thinning of the wall, and in some cases, rupture. Therefore, this machine is not recommended for deforming thin-walled workpieces.

DIY rolling pipe bender

On such equipment, the workpiece acquires a given shape by rolling. In a home workshop, it is easier to make a 3-roller design with a manual drive. Let's consider two options for such machines.

Machine version with rotary platform

The design principle of such a machine for bending pipes with a cross-section other than round is as follows:

1. The main frame is connected through a swivel joint to a rotating platform, which sets the bending angle.
2. The platform is set in motion by a jack resting against it with a working rod.
3. The profile is drawn by rotating the handle located on the intermediate shaft.

To make the base of the machine and stands, you will need a channel with a wall height of 150 to 200 mm in an amount of about 3 m. A steel pipe with an internal diameter equal to outer diameter bearings, which is divided into 6 short sections.

The rotating platform is not the only option for adjusting the bending parameters of the profile pipe; this can be done using the outermost rollers. To do this, holes are made in the support plates and channel so that the elements are movable. You can raise the end platform with any jack that you can find on the farm

The base and two platforms are made from the channel. Having retreated about 0.5 m from one of the sides, weld a vertical stand from the same channel. To do this, two segments are paired to make the stand strong.

Strictly observing horizontality, a stationary platform is mounted, and the rear pillar is welded to it. Next, they take a section of a profile pipe and increase the limiters with a height no less than the thickness of the profile pipe, the deformation of which is supposed to be carried out on the machine being manufactured.

The guide platform is connected to the main frame via door hinges. Bearings are mounted on the extended stops and edges of both platforms by welding and the structure is reinforced with corners. The shafts are inserted into bearings, and a handle is attached to the middle one.

A jack is installed under the edge of the guide platform and secured to the base using a bolted connection.

The assembly of a pipe bender with a rotating platform is carried out in the following sequence:

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To make a pipe bender you will need the following materials: pipe, channel - 2.5 m, bearings, jack, hinges, rollers

It is necessary to cut the channel into two parts - one of them will be the main platform, and the second will be the guide. They are connected using metal loops

The next step is to cut 6 pieces of pipe 2 cm wide and bend them to attach the bearings

Having cut the rollers to the required length, they need to be connected to the bearings and the structure welded to the working platform

The central roller must be welded at a height of 8-9 cm above the platform. This is necessary so that a profile pipe can pass under it

Using welding, we connect the working platform to the base and check the reliability of all connections

The operating principle of a pipe bender determines its design. These are hand-held, portable and stationary tools, electrically driven, hydraulic. If you need to bend a pipe, the easiest solution is to buy a pipe bender in a store. But you can make a tool with your own hands from scrap materials.

There are several types of pipe benders, which differ in mechanism and principle of operation: hydraulic and pneumatic. Factory units that are driven by both types of drives do a good job of creating bends. Unfortunately, not everyone can use such devices or purchase a factory version, and mastering bending technology on factory machines without experience is problematic. What kind of pipe benders can you make with your own hands? What are the common bending techniques?

Manual homemade pipe bender for profile pipes

Homemade profile pipe bender presented in several variations. It all depends on the materials that are available when creating the equipment.

The most common is the frontal one, for the manufacture of which you will need:

• three shafts/rollers – cylindrical in shape made of metal;
• chain;
• axis of rotation;
• drive mechanism;
• metal profiles for the frame.

When creating a machine with your own hands, you make the structure or some elements (rollers) from wood or polyurethane. During operation, it is necessary to calculate the strength of pipes (manufacturing material) that will undergo deformation. Otherwise the structure will not hold up.

Manual bending technology

In the process of bending a profile pipe in a homemade machine, the principle of rolling/rolling is carried out. Pipe bending using this method avoids kinks and damage. The result is an exact correspondence of the desired angle to the degree and size. In the unit, the pipe is inserted between the rollers and bends when the handle is rotated.

Stages of assembling a manual pipe bender

How to assemble a manual pipe bender:

1. Prepare the metal frame for installing the components. The structure is secured by welding and bolted to ensure the strength of the entire equipment.
2. Installation of the rotation axis and shafts, two of which are mounted above the third. Here the bending radius of the pipe depends on the distance at which the two lower cylinders are located from each other. Therefore, to adjust the deformation angle, install the rollers and stopper.
3. The rotating mechanism is driven by a chain. The presence or absence of gears is taken into account here. There are only three of them. A chain from an old car, which is mounted on the shafts, is suitable.
4. Attach a handle to one of the shafts. The element will create a torque force.

Video instruction. How to make a manual pipe bender

To manufacture a rolling machine for bending profile pipes you will need:

• jack;
• for the frame: metal profiles and shelf;
• 4 high-strength springs;
• 3 shafts;
• chain and other elements.

Roll bending technology

During the bending process in the machine, the pipe is deformed at a given location. The pipe rests on the side rollers, a third one is lowered from above and thus the product is fixed. When the handle rotates, the chain sets the shafts in motion, and the pipe bends under the right angle.

How to make your own rolling pipe bender

How to make a rolling pipe bender:

1. The pressure shaft consists of gears, rings and bearings secured through a key. Therefore, the main thing in the assembly process is turning the rollers and bearing races. The size of the shafts must correspond to the bearings and sprockets. The turning process is entrusted to the turner based on the drawings. There are three shafts, two of which are located on the sides, and the third is suspended on springs.
2. The next step is to drill holes and cut threads in the rings (for making grooves, threads for clamping bolts) with your own hands.
3. Preparing a shelf from a channel - drill holes and cut threads to install the pressure shaft.
4. Final stage– welding and installation work of the entire structure. First, the frame (legs) is installed.
5. Next, hang the shelf with the pressure shaft on springs and mount the side support shafts, which are connected with a chain. At the end, attach the handle to one of the side support shafts and mount the jack.

Aspects of work:

• the pressure shaft is screwed through keys to the shelf;
• The “suspended” pressure shaft is installed on a shelf. Nuts for the springs are welded to this base. Subsequently, the platform is turned over and attached to springs;
• when tensioning chains, a magnetic corner is used as a holder;
• in the process of screwing the sprockets, install keys prepared from an engraver;
• the rotation handle is made with a rotating tube;
• The jack is mounted on a “suspended” platform using bolts and welding.

How to make a hydraulic pipe bender at home

The hydraulic pipe bender for profile pipes is equipped with a hydraulic cylinder, bars, a pressure device and pipe stops. Making such a unit at home is a labor-intensive process.

Equipment details:

• hydraulic jack(not less than 5 tons);
• shoe;
• several rollers (2-3);
• channel;
• metal plates and other parts.

Hydraulic bending technology

The bending process involves deforming a given section of pipe using a hydraulically driven jack. The pipe is inserted into the shoe and both ends are secured. Operate the jack by turning the handle slowly. The force created by the hydraulic drive is transmitted to the roller - the pipe is bent at the desired angle. The work can be stopped at any time; the pipe can be pulled out by making a couple of turns of the handle in the opposite direction, that is, releasing the pressure of the roller.

How to make a hydraulic bending machine

We make a hydraulic bending machine with our own hands:

1. A channel structure is pre-prepared where the shoe and rollers will be located. Then the frame of the machine is made of similar metal.
2. The last platform of the structure is strengthened metal plates. Subsequently, a jack will be mounted on this shelf. Secure the device with bolts and attach the handle.
3. The difficulty is finding or making rollers that should wrap around the pipe. The parts are mounted in a rectangular channel at an equal height. The shoe is installed lower. The arrangement of the parts determines the specified bend radius.
4. The rollers and shoe are secured with bolts. The holes are prepared in advance.

Video instruction. How to make a hydraulic pipe bender

When bending pipes, it is necessary to know the diameter of the material and the principles of the process. This will ensure correct deformation of the material without overload or kinks. On machines using hydraulics, it is possible to bend a section of pipe with heating, which allows you to bend products with large wall thicknesses, from durable alloys and polymer materials.

Hot and cold pipe bending methods

Pipe deformation is carried out in two ways:

Cold bending is used for pipes made of plastic material. As a rule, these products small sizes made of copper, aluminum and other materials (except cast iron), metal-plastic. The process is carried out using machines or a mechanical pipe bender. For better bending, sand, salt, or oil and water (ice) are poured into the pipe before deformation.

Tatyana Pronina, expert

The second method is used to deform pipes with increased ring rigidity ( stainless steel and so on.). The method can be used for all types of pipes, except metal-plastic.

Table of minimum pipe bending radii

Where the smallest bending radius is R, the pipe diameter in mm is d, the minimum length of the straight section is Lmin.

How to make a template for bending pipes along a radius

Most simple method is pipe bending according to a template. The principle is to deform the material by applying wooden structure with a radius of curvature. The method is suitable for aluminum and steel pipes with small wall thickness.

The template is cut out of wooden boards, which are fastened together with bolts or in another most convenient way. The entire structure is bolted to a table or other stable base.

The thickness of the template, where the pipe is directly applied, is several centimeters greater than the diameter of the pipe being bent. The end of this part (the edge of the template) is cut at an angle so that the pipe does not slide off the ledge.

An emphasis is mounted on the template. A pipe is inserted between it and the base of the template and gently pressed - the material bends.

1. If you are assembling a manual rolling pipe bender for profile materials, then you can not use sprockets, but build a structure with a drive on one roller. But the mechanism will periodically slip. The clamping screw can be replaced with a jack.
2. When making the template, use hooks attached to the wood to prevent the pipe from slipping.
3. If you have to bend a pipe under a large radius, it is better to make a unit with three rollers.
4. The greater the distance between the rollers, the less force is applied for bending. To change the bending radius, first provide for the possibility of the rollers moving horizontally relative to each other.

Video lesson on bending profile pipes

Bending profile pipes at home is carried out using various pipe benders, assembled with your own hands. Professional engineers and hobbyists are increasingly improving homemade equipment and sharing their discoveries on the Internet.

Do you have your own method for bending profile pipes? What tools have you collected yourself? Share with us in the comments.

protryby.ru

Making a profile bender with your own hands: step-by-step instructions with photographs

Profile pipes have a wide range of applications, are indispensable in construction, and therefore are necessary for a variety of purposes: the construction of fences, playgrounds, various types of supports. For example, if you decide to make a greenhouse with your own hands on your personal plot, you will have to bend the profile.

Personal pipe bender

The required bending radius can only be made using a special device - a pipe bender, which looks like a machine. Available for sale a wide range of profile benders of both domestic and foreign production. However, there is another option - a homemade pipe bender for a profile pipe. It is advisable to make a machine with your own hands if you need to bend only a few products and do not want to buy an expensive tool.

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Types and application of profile benders

Bending profile products is one of the most difficult operations, because without the use special devices giving the profile the required shape becomes almost impossible. Manufacturers offer the following types of profile benders to choose from:

• Manual PG-1;
• Manual PG-2;
• Manual PG-4.

Using any of the industrial pipe benders simplifies the bending process and saves time and effort.

Manual PG-1

However, in order to save money, you can make a manual profile bending machine yourself. Its production does not require large financial costs; most of the materials can be purchased at ferrous metal collection points at a minimal cost. At the same time, such a machine will not be inferior to the factory one in terms of its efficiency, only it will not look as beautiful in appearance.

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Materials for the manufacture of profile bending

Making a pipe bender for a profile with your own hands will require preliminary preparation materials. The list is quite large, but the cost of each individual item is insignificant:

1. The corner with which the frame is made.
2. Pipes or profiles on which the machine will stand.
3. Shafts for bending. They can be made by a turner.
4. Chain mechanism.
5. Tensioner.
6. Shaft guide.
7. Driving element.
8. A handle that can be made from any metal available on the farm.
9. Channel fastening.
10. Bolts.

In addition to preparing the materials, you should select the desired profile bending drawing in advance.

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Drawings for making the device

Drawings for making a profile bender are different. Masters share them with great pleasure and you can choose absolutely any one. The only thing you should pay special attention to is that the diagram must include accurate measurements of each element, otherwise the machine may simply not work. To make a pipe bender with your own hands, you can choose a drawing from the following options:

Drawing for making a pipe bender

Drawing for making a pipe bender with your own hands

After the drawing has been selected and studied in detail, you can move on to the most important stage - the actual production.

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Pipe bender manufacturing process

Since bending profile pipes is quite difficult, you will need a winch or hydraulic mechanism. Also, for do-it-yourself manufacturing, welding is necessary, with the help of which individual metal elements connect with each other.

The machine manufacturing process itself can be divided into several stages:

When the work is completed, you can begin testing the device. It is enough to take any profile and put it on the machine. Then, by rotating the handle, move the shafts and thereby bend the pipe. The profile easily and quickly acquires the required bending radius. Such a machine will become an indispensable device in any private home or country house. A homemade profile bender can be used for the construction of any structures with a metal frame, and its production will require mere pennies.

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DIY pipe bender

Interesting on the topic:

vseotrubax.com

DIY machine for bending profile pipes: drawings, video

Profile pipes are used for production various designs and objects: greenhouses, canopies, gazebos, furniture sets, and all this can be done using a machine for bending profile pipes with your own hands.

In case of urgent need, any pipe can be bent using available means. However, the quality of such a product will be a priori low.

It is possible to produce a part with precise geometric parameters only on a machine.

Profile pipe bending technology

Any metal product has hardness and strength.

To bend a metal rod or profile pipe, you need to apply forces that can change the geometric shape of the original workpiece.

This operation can only be performed using a special mechanism called a pipe bending machine.

The main function of the machine is to ensure gentle deformation of the workpiece. This deformation is carried out due to the forces exerted by the worker or the electric motor.

Along with electric drive, the design of the machine uses a pneumatic or hydraulic press.

Today, enterprises use two types of pipe bending machines:

• with manual drive;
• with electric drive.

A drawing of the simplest device for bending profile pipes is presented below. With certain skills, such a machine can be made with your own hands. The performance of such a device will be low.

The simplest pipe benders are used in housing and communal services.

Enterprises engaged in mass production of products are equipped with electric-powered pipe bending units.

Here the final products meet the strict requirements of standards and technical specifications.

When starting to release the next product, you need to re-configure the equipment. In this case, a unit for bending profile pipes. This needs to be done in the following way.

First, a template is installed in the machine that corresponds to the geometric shapes of the future product. Then all elements of the machine are adjusted.

After customization, you need to “bend” several copies of the product and compare it with the template.

In the process of manufacturing a large batch of products, random inspection should be periodically carried out to ensure compliance with the specified parameters.

In case of significant deviations from the template, the machine is set up again.

Machine design

The video shows how an electrically driven pipe bending unit works. Kinematic diagram mechanism used in machine tools different designs, is the same.

When starting to make such a machine with your own hands, you need to remember this. It is preferable to make a drawing of the machine yourself.

During operation homemade machine pipes are often flattened. At the bend site, creases form. Such products are not suitable for further use.

To prevent similar results in the future, it is necessary to initially develop the bending technology on profile pipes of different sections.

Everyday practice shows that the service of bending profile pipes is in demand among a certain category of the population. In particular, among summer residents who build greenhouses with their own hands.

To provide such a service, entrepreneurs prefer to purchase a pipe bending machine.

When choosing, you need to pay attention to the following features of the machine:

• portable or stationary;
• With automatic control or with manual;
• with manual or electric drive.

The cost of a specific model is determined by the options that the unit is equipped with. If high precision of products is not required, then you can purchase a simpler design or make a pipe bender yourself.

DIY machine

When deciding to make a pipe bender with your own hands, you need to study the drawing of the device in detail.

The unit consists of the following components:

1. bed;
2. conveyor;
3. bracket with guide corners;
4. top roller;
5. clamp.

Each unit is assembled separately, after which the machine as a whole is assembled.

Before starting production, it is necessary to prepare all the materials, parts and devices that make up the machine.

To work you will need welding machine and a set of tools. The first step is to prepare all the main elements, and then assemble them in a certain sequence.

Bed assembly

The shape of the bed is regular table or workbench. Source materials and components are specified in the specification.

You can use a channel as legs or use pipe sections with a diameter of 100 mm.

When assembling, which is performed by welding, you must strictly adhere to dimensions indicated in the drawing.

After the frame is assembled and fixed, a conveyor needs to be installed on it.

Assembly and fastening of the conveyor

The conveyor consists of two rollers, which are mounted on opposite sides of the frame. The conveyor drawing contains all the necessary data to complete the installation.

It is very important to accurately and securely fasten the chain sprockets to the shafts. The next step is to attach the tensioning mechanism, which also has the same sprocket.

It is designed to regulate the degree of tension of the drive chain.

Assembling the clamping mechanism

An ordinary clamp is used as a clamping mechanism. And at this stage it is necessary to be guided by the data indicated in the drawing. It is important to maintain all installation dimensions.

If there are any deviations, the degree of clamping will not provide adequate accuracy in the manufacture of products. In the same way, rolling rollers must be installed with the required accuracy.

Upon completion of assembly, it is necessary to test the device in acceptable modes.

To do this, pipes of various diameters are taken, which must be bent according to predetermined parameters.

It is important that the specified geometric dimensions strictly correspond to the results obtained.

In this context, it should be noted that the assembled pipe bender can work with both ordinary pipes round section, as well as with specialized products.

The video shows a profile bending machine that you assembled yourself.

If it is planned to organize regular execution of orders on the machine, then instructions should be developed on the rules for its maintenance.

Machine Operation and Maintenance

A manual machine for bending profile pipes is simple and trouble-free to use. At the same time, it must be kept in order and protected from aggressive influences. environment.

First of all, from rain and snow. The formation of rust on rolling rollers. This can be done using a tarpaulin cover. The portable pipe bender must be stored in a dry place.

After use, the machine is cleaned of dust, dirt and sand. Stationary machines for bending profile pipes with electric drive require regular maintenance and preventive maintenance.

The electric motor must be inspected at least once a year.

IN maintenance needs both manual and electric machine. When moving the machine from one site to another, you should protect it from possible damage during loading and unloading.

After installation in a new location, you need to check the quality of fastening of all components and lubricate the axes of all rollers. Worn parts should be promptly replaced with new ones.

When storing the pipe bender for a long time, all unpainted surfaces must be coated with a preservation lubricant.

With strict adherence to the rules of operation, maintenance and storage, the unit for bending profile pipes will serve for a long time and reliably.

stroyremned.ru

Do-it-yourself pipe bender for a profile pipe - architectural forms without extra costs

In processing, a corrugated pipe is no more difficult than a round one, however, when bending it, some features must be taken into account.

How to bend a profile pipe - the simplest pipe bender

It is not necessary to make a complex device of rolls, levers and a frame. To bend profile pipes of small cross-section, a simple method is sufficient, for example:

Sand filling

Sand, preferably fine river sand, is poured into the internal cavity of the workpiece. The sand is pre-sifted and dried. The holes at the ends are plugged with plugs. Next, the profile pipe is bent around a template of the required shape.

If necessary, the bend area can be preheated with a blowtorch or gas torch. IMPORTANT! With this method, it is necessary to control the side walls of the workpiece. If you exceed the critical radius, the pipe will collapse like a house of cards.

Filling with water

In fact, bending a profile with water is pointless. Therefore, it must first be frozen. To do this, the pipe is plugged on one side with a stopper (ordinary plasticine can be used), filled with water and exposed to the cold.

The frozen corrugated pipe is bent on a template. Of course, use a torch or blowtorch You can’t, otherwise the whole point of filling it with ice will be lost. This method is good for bending thin-walled copper or aluminum pipes.

Spring (homemade mandrel)

A spring is first wound from steel wire, the dimensions of which are 3-5% smaller than the internal section of the profile. The finished equipment is placed inside, and the corrugated pipe can be bent in the traditional way around the template. After completion of the work, the spring is removed, leveled and can be reused.

Cutting and welding

The following method is applicable when the bend radius is small and the profile is thick-walled and durable. Segments are cut out from the inside of the intended bend using a grinder, the geometry of which is calculated before starting work.

The pipe is bent to the required radius, and the closed edges of the cutouts are welded in any way. For aesthetics, welding areas are ground with a grinder.

To work with more serious profile dimensions and characteristics, a special tool is required.

On an industrial scale, profiled moldings are bent using special machines, many of which are equipped with CNC. This does not mean at all that the process cannot be repeated at home. At a minimum, there are manual pipe benders for profile pipes that can handle fairly large cross-sections and small bending radii.

Do-it-yourself profile pipe bender of rolling type

The installation can be either portable or stationary. The drive is provided by muscle force or by an electric motor with a gearbox.

The principle of operation of a manual pipe bender is the same - the corrugated pipe rests on spaced-apart roller stops, between them there is a thrust roller that presses on the workpiece. The profile is stretched horizontally, simultaneously bending along a given radius. The diagram reveals the design and main components of the device.

Rollers for a pipe bender can be cylindrical or grooved, it depends on the size and characteristics of the workpiece. A flat and wide profile is convenient to roll on even rollers, while a narrow and high profile requires guide grooves.

The most popular are universal rollers. If necessary, you can put guide washers on the cylindrical base.

Homemade pipe benders are most often made on the basis of this design. They are suitable for professional pipes of almost any size and do not require expensive elements during assembly. All parts, with the exception of the rollers, can be found in your storerooms. The drawing of a manual pipe bender clearly demonstrates the simplicity of the design.

Most home craftsmen use a manual drive, since speed is not needed for such work. However, if you need to produce a large piece of bent corrugated pipe, mechanization is used. Using a simple chain reducer and powerful drill, you can reach the industrial level of production of bent profiles.

Don’t be intimidated by the complexity of manufacturing and searching for the necessary components. The cost of services for the production of blanks from corrugated pipes is so high that making a homemade device will significantly save your money. The abundance of homemade versions of profile bending machines only confirms these words.

A self-made pipe bender easily bends a square pipe

For example, here is a structure made from decommissioned and discarded industrial electrical equipment. The two-shaft gearbox was sawn in half and served as support rollers. The step-down part is connected to a three-phase electric motor, on which the trigger mechanism has been converted for single-phase power.

Both shafts are synchronized with a motorcycle chain and gears from the same bike. The thrust roller is driven using a conventional “Zhiguli” diamond-shaped jack. The machine turned out to be so successful that it outperforms its factory counterparts in terms of productivity. And the costs are a couple of half-liters for the work of a welder.

In the video, the master talks about the dimensions of a homemade pipe bender for a profile pipe. The manual pipe bender was made with your own hands from scrap material that was found in the barn and turned out to be quite high quality. during operation, the pipe turns out exactly along the arc and is not driven by a “screw”.

Lever pipe bender for profile

Bending a profile pipe at small radii is not as easy as bending a round one. Even heating or filling the cavity with sand will not help. This is due to the peculiarity of the geometry. It is impossible for the flat side walls to bend without forming breaks, and the inner plane of the inner radius folds like an accordion, spreading the profile out to the sides.

Therefore, the bending radius of the profile is much larger than that of a simple pipe.

However, even for such workpieces there are small-radius lever pipe benders that operate on the rolling-in principle. The profile is, as it were, wound onto a template of a given radius, pressing against it using a guide roller mounted on the lever. The trick is in the template video profile.

In the middle of the recess there is a protruding part that presses the plane of the inner radius into the profile cavity.

Due to this, the tension on the walls is relieved, and all the “excess” metal goes inside without spoiling appearance blanks. The same thing happens with the outer radius plane, only special rollers are not needed for this. The profile geometry comes into effect.

Another way to bend a profile with a small radius is a rolling pipe bender with a guide.

The template seems to be rolled along the mating part of the machine, constantly monitoring the condition of the profile. With this method, the geometry of the workpiece is preserved as much as possible. If the process is accompanied by intense heating, the quality of the bend will increase significantly.

However, this method is applicable only in industrial conditions using powerful gearboxes or hydraulic drives.

IMPORTANT! Bending a corrugated pipe to a small radius is possible either on a square profile or on the wide side of a rectangular section. It is not allowed to bend a vertically located corrugated pipe to such radii.

If there is a need for rounding narrow side– then you will have to cut out the sectors with a grinder and then weld the seams (see the beginning of the article).

In fact, it is not often necessary to bend a profile pipe to small radii. It must be remembered that the profile loses its strength properties at the bend. Therefore, when creating structures that use angles close to 90 degrees, it is better to cut the workpiece and weld it at the desired angle.

Cold forging

Another area of ​​application for small radii is the manufacture of figured jewelry.

The technology is called " cold forging" Devices for this type of work can be purchased at the store or you can also make it yourself. Such devices are not widely used, but if you master the technology, you can decorate your Vacation home original elements from a banal square profile.

By using the tips from this article, you will expand your craftsman range and save money.

Examples from life on how I made a pipe bender with my own hands

Do-it-yourself pipe bender for a profile pipe - architectural forms without extra costs Link to main publication

Bending profile pipes is a fairly common procedure, for which a special device is used - a pipe bender. You can make a pipe bender for a profile pipe with your own hands, or you can purchase it at the construction market or in a store.

Serial devices differ in their operating principle; they may have different types drives, however, to operate any of these devices you need certain experience. The use of devices manufactured in production conditions is limited by the fact that they are not cheap. A good solution in all such situations would be to independently manufacture a device designed for bending profile pipes, for which you can use improvised means.

Required design elements

To make a pipe bender with your own hands, you can use drawings of various designs. Their choice is determined mainly by what materials you have. Most often they opt for front-type pipe benders, the design of which includes:

• three rollers (shafts), which must be metal;
• drive chain;
• axes of rotation;
• a mechanism that will set in motion all elements of the device;
• metal profiles from which the frame of the device will be made.

To understand how to bend a profile pipe on a homemade device, it is important to understand the technology used for this process. As a rule, pipe benders use the rolling or rolling principle, which minimizes the risk of kinking and damage to the pipe.

To make a bend on a profile pipe using such a device, you need to insert it between and turn the handle. The use of such a simple bending device allows you to obtain bends on a profile pipe that fully comply with the specified parameters.

To make a simple machine for bending profile pipes, you will need the following structural elements:

• ordinary jack;
• metal profiles and shelf necessary for making the frame;
• springs with high strength;
• shafts in the amount of 3 pieces;
• drive chain;
• a number of other structural elements.

When using such a device, the operation of which can be seen in one of the videos below, the pipe is laid on two side rollers, and a third one is lowered on top of it, creating the required force. To give the pipe the necessary bend, you need to rotate the handle that drives the chain and, accordingly, the equipment shafts.

Pipe bender manufacturing process

To make a receiving device, you need to follow the following procedures.

• Prepare a reliable frame, the elements of which are connected by welding and bolted connections.
• Using a previously prepared drawing, install the axis of rotation and the shafts themselves, two of which are located above the third. The bending radius of the profile pipe depends on the distance at which the axes of such shafts are located.
• To operate this bending mechanism, a chain drive is used. To complete such a transmission, it is equipped with three gears, and the chain itself can be picked up from an old car, motorcycle or other equipment.
• To operate such equipment, a handle is needed that is connected to one of the shafts. It is through this handle that the required torque is created.

Instructions for making a pipe bender

Making a pipe bender for a profile pipe yourself is not at all difficult if you adhere to the following technological sequence.

• Gears, bearings and rings are placed on the pressure shaft, which are connected to it using a key. First, a drawing of such a shaft, races for bearings and rollers is developed, then these parts are turned, which is best entrusted to a qualified turner. In total, for this device it is necessary to make three shafts, one of which is suspended on springs, and the other two are located on the sides.
• Then it is necessary to drill holes in the rings, which are necessary for making grooves and cutting threads.
• Now you need to make a shelf, for which you use a channel, in which you also drill holes and cut the threads required when installing the pressure shaft.
• The entire equipment design after completion preparatory activities it is necessary to assemble, for which welding and bolted connections are used. First of all, the frame is installed, which also serves as the legs of the pipe bender.
• The next step is to hang the shelf with the pressure shaft attached to it, for which springs are used. After this, it is necessary to install side support shafts on the homemade pipe bender, on one of which a handle is attached.
• The final touch is to install the jack on the pipe bender.

Some subtleties of implementation installation work:

• the pressure shaft, fixed with keys, is additionally screwed to the shelf;
• The installation of the pressure shaft is carried out according to the following scheme: the shaft is installed on a shelf to which nuts for the springs are pre-welded; after the installation work is completed, the shelf is turned over and suspended on the springs;
• The chains are tensioned using magnetic corner, which is used as a holder;
• when tightening the sprockets, keys are used, which are pre-made from Grover;
• the drive handle for the bending machine is made with a rotating tube;
• jack for this homemade device installed on a suspended platform using bolted connections and welding.

Manufacturing of hydraulic pipe bender

On the Internet you can find many photos and videos of how to make your own device for bending profile pipes with a hydraulic drive. The process of manufacturing such a pipe bender, equipped with a hydraulic cylinder, injection device and pipe stops, is a rather labor-intensive undertaking.

In the drawing and in the design of such a pipe bender, the following elements can be distinguished:

• jack hydraulic type with a carrying capacity of at least 5 tons;
• shoe;
• rollers in the amount of 2–3 pieces;
• powerful metal channel;
• thick metal plates and other parts.

To make the required bend of a profile pipe using a hydraulic device, it is necessary to insert it into the shoe and fix both ends. After this, you need to use a jack, which, with its rising rod, presses on the roller, which acts on the pipe and bends it. Once the required bend angle is obtained, the process can be stopped and the pipe can be removed from the pipe bender by turning the jack handle several times in the opposite direction.

Methods for bending pipes using a homemade machine

The question of how to bend a profile pipe using a homemade pipe bender is unlikely to confuse you if you read a few more recommendations. Hydraulic machines can be used to successfully bend profile pipes made of different materials, as well as thick-walled products. This operation can be performed using either a cold or hot method, which involves preheating the pipe section.

Thus, a manual hydraulic bending machine can be used to influence the pipe in two ways:

• cold;
• hot.

Cold bending is the simplest bending method, which is used for pipes made of plastic materials. The subtlety of this process is to fill the pipe before the flexible one with sand, salt, oil or cold water. This allows you to get a better bend without significant deformation of the pipe.

If you are interested in the question of how to properly bend a profile pipe with thick walls or made from materials of increased rigidity, then the answer to this question is to use the hot bending method.

The question of how to bend a profile pipe as accurately as possible and without unnecessary labor costs will be answered by several useful tips from qualified specialists.

Removable casters different shapes will allow you to work comfortably not only with profile pipes, but also with round ones

• In manual pipe benders for bending profile pipes, you can not use sprockets, but assemble a structure based on one drive roller. Instead of a pressure screw, such pipe benders often use a jack.
• If you are bending according to a template, then to prevent the pipe from sliding off it, you can use metal hooks as stops.
• If you need to bend a profile pipe under a large radius, it is best to use a pipe bender with three rollers.
• To get a more versatile bending machine, you can make its thrust rollers movable. This way you can change the bend radius of the pipe.

In the video below, the master shares his experience in building a pipe bender from scrap materials.

In order to strictly observe the dimensions of the required pipe bend, it is best to perform this operation using a template made of wood. Even the simplest manual pipe bender using such a template will allow you to bend a profile pipe with precise compliance with the specified parameters. By the way, such templates are mainly made for the implementation of the simplest manual bending methods.

The need to bend strips or steel pipes arises among home craftsmen quite often. There are many options to solve this problem. For example, the appropriate equipment can be purchased in a store, but making a bending machine with your own hands is quite simple, and this approach will be cheaper.

Making the simplest pipe bender

If you decide to do the mentioned work yourself, then you can resort to simple solution, which involves a product that provides a certain bending radius of the pipe. Experts advise home craftsmen to use a template made by themselves. With its help you can work not only with aluminum, but also with steel pipes. To carry out the manipulation, you should prepare wooden boards whose thickness is greater than the diameter of the pipes used for bending. In the process, you will need to make a template by fastening the boards in any way convenient for you.

In order to prevent the pipe from slipping out during manipulation, the boards should be cut with a slight slope. If you decide to make such a simple machine for bending a profile pipe with your own hands, then you will need to secure it to the table or working base in some reliable way. As close as possible to the template, it is necessary to strengthen the stop against which the element will rest. At this point we can assume that the pipe bender is ready.

Features of use

One end of the product should be installed between the stop and the template, and then, holding the other, with careful smooth movements it is necessary to bend it along the workpiece. You can make a lever at the opposite end; for this it is recommended to insert a sufficiently strong rod into the pipe. You can use a method that involves using an element of a larger diameter. Do not try to bend the pipe away from the center of the template, as this may cause the product to break.

If you make a machine for bending a profile pipe with your own hands, then you can form a bend of a larger radius, but then the template will be made of plywood and hooks.

Making a pipe bender from hooks

Another fairly simple machine for bending a profile pipe with your own hands can be made using strong metal hooks, which are installed on plywood in such a way that it is possible to form a bending line. An advantage of this model is the ability to adjust the position of the hooks, thereby changing the bend line.

With the help of such equipment, you will be able to work with products that can be manually bent, as well as with those pipes that are not so pliable for such manipulations. For this you can use If the need arises for manipulations where a profile pipe will be involved, then there is no need to make a bevel when creating a template. The product is strengthened with several limiters.

Alternative options

If you decide to make a machine for bending a profile pipe with your own hands, the drawings presented in the article will allow you to carry out this work quite simply. More complex model there is a structure consisting of templates and rollers. These elements should fit the pipe as accurately as possible. If you have to bend fairly soft products, then the metal roller and template can be replaced with blanks made of hard wood. A lathe should be used to make rollers.

Another solution is to use plywood with a jigsaw. Thus, an element is created with a slope in a certain direction. Received circles different diameters should be fixed in one roller, and then the unevenness should be processed using abrasive paper. When you make such a machine for bending a profile pipe with your own hands, the photo is definitely worth considering even before the start of work. In order to achieve higher reliability wooden elements, they should be secured with steel plates.

Making a pipe bender from rollers and angles

In order to form a pipe bender, you can use blanks for rollers made of wood. These elements can also be made of bearings, but if the pressing type is used, then wedging must be done to prevent rotation. The pitch between the rollers will depend important features designs. If you decide to make a manual machine for bending a profile pipe, then remember that the more impressive the distance, the less effort you will need to apply. However, in this case the bend radius will be minimal. The sides should be installed to hold the pipe vertically. Whereas in relation to the axis of the rollers it should be located perpendicularly. Otherwise, the pipe will be bent in a spiral shape.

The pressure roller must be tightened from below by rotating the threaded strip, which is cut in the central part. Gradually, the master should tighten the pressure roller, which will facilitate rolling the pipe through the structure. If it is necessary to obtain a bend of a small radius, then about 50 runs may be required.

Another manufacturing option

If you need PG-2 for bending a profile pipe, you can make it yourself using shafts, steel profiles, a drive mechanism and a chain. If you have an engineering education, you can improve the design at your discretion by adding functions. Shafts will be needed in the amount of 3 pieces; they must have axes of rotation. It is with the help of them that bending will be done. A profile will be needed for the frame.

First you will need to prepare the frame. All parts are connected by welding, but it is worth considering the point that it will not provide sufficient reliability when manipulating thick pipes. In order for the structure to be more mobile and stronger, it is necessary to supplement the fastening with bolts. If it is produced manual machine to bend a profile pipe with your own hands, you must remember that the bending shafts are metal cylinders. Two of them should be fixed slightly above the level of the working surface. While the third is installed above them.

Features of the work

The bend radius of the pipe will depend on the pitch between the lower cylinders. After the shafts can be secured, the machine must be equipped with a system that transmits rotating forces. The most suitable option would be to use a chain mechanism, which can be bought on the market or borrowed from an old car.

Speaking of the above: if you selected the chain separately, then you should take care of the presence of gears, of which there should be three. Two are mounted on lower shafts, while the last one is slightly lower. It is necessary to provide for the possibility of adjusting the position of the chain, which will allow it to be tightened if necessary.

Profile pipes have become a part of human life thanks to their inherent properties: increased strength, the presence of stiffening ribs and convenient geometry. Due to the wide use of products, there is often a need to bend such pipes in one or several places and at different angles, for which equipment for bending profile pipes is used. This article will tell you about the types of pipe benders, working with them and making the device yourself.

Types of pipe benders

As mentioned above, often - both in the household and on an industrial scale - it becomes necessary to change a round or profile pipe by bending it at the required angle in one or more places or giving it a smooth bend radius. This is also required technological conditions operation of pipes, and for aesthetic purposes (for example, when creating patterned structures and elements - for canopies, awnings, etc.).

In most cases, it is either physically impossible to bend the pipe manually, or it is possible with significant violations of the profile geometry, which complicates the further use of the product.

Therefore, they use professional or home-made machines for bending profile pipes - pipe benders.

Based on the principle of interaction with the corresponding products, pipe benders are divided into:

1. Hydraulic lever devices , bending products at a given angle. In this case, all the force is concentrated through the lever at one point - the bend.
2. Roller devices(profile benders), providing the ability to give the profile pipe smooth bending radii. When using this tool, the product is flared (rolled out) using rollers.

It should be additionally noted that, no matter whether purchased or made by hand, machines for rolling profile pipes can only work with plastic, non-fragile material, that is, with metals and alloys (read: ""). For bending products made of rigid plastic, asbestos cement, etc. they are not suitable. A soft plastic Bends by hand and effortlessly.

Pipe benders are classified according to their purpose:

• for profile products - pipes with a cross-sectional geometry other than round (oval, rectangular, square);
• For copper pipes and products from other metals and alloys (read also: " ");
• for metal-plastic pipes, etc.

Working with the device

Usage quality instrument ensures pipe bending in compliance with the quality requirements of the resulting product.

Proper use of a machine for bending profile pipes ensures uniform bending of the product and eliminates the occurrence of creases and flattening during pipe processing.

Giving the pipes a curved shape, in turn, ensures the most favorable location of pipelines and other structures, without using up extra space. In addition, in some cases, by correctly bending some elements, you can avoid the use of welding and various pipe fittings (couplings, flanges, angles, tees, etc.).

Equipment selection

Nowadays there are a sufficient number of pipe benders on the market from various manufacturers, purposes and price categories, which allows each master to choose for himself necessary tool, guided by the intended area of ​​use and availability Money.

Depending on the intended purpose of the device, you should purchase:

• manual pipe benders for metal and metal-plastic- they are suitable for bending pipes made of different grades of steel, cast iron and, of course, composite products;
• profile benders- as the name suggests, they are used to give necessary forms profile pipes, which are usually made of steel;
• manual pipe benders for copper pipes- have the least bending power, since copper is the most ductile.

If we list the most popular pipe bending devices in Russia, we should note such popular brands of manual roll forming machines as PG-1, PG-2 and PG-4. All of them domestic production and, according to the statements of the people who used them, they are not inferior to imported analogues.

Making a pipe bending device with your own hands

In addition to purchasing the product, there are other options: borrow a professional pipe bender from friends or rent. In addition, guided by the relevant drawings for a machine for bending profile pipes, you can try to assemble the tool yourself.

Among the advantages of a self-assembled machine for bending profile pipes are:

• the ability to control the entire manufacturing process, from the stage of selecting materials to final painting, which means the owner of a homemade machine can be confident in its reliability and safety;
• saving money - many parts for assembling the device or are already in the arsenal home handyman, or can be purchased profitably, for example, at scrap metal collection points. Read also: "".

To assemble the machine you will need the following parts and elements:

• corners and channels to create a frame on which the main mechanism will be fixed;
• supports for the machine - any options are possible: legs made of round and profile pipes, corners, etc.;
• bending rollers (shafts), which can be made to order by a turner;
• transmission chains and gears for creating torque on the rollers (you can, for example, use the components of an old domestically produced car - a “six” or another);
• a device for tensioning the chain (can also be removed from the machine);
• guides for rollers - in order to obtain them, a couple of corners are welded;
• the driving component for the roller guides - can be made of a profile pipe with parameters 40 by 20 mm;
• adjusting screw;
• lever for actuating the device - it can be made from any metal part;
• bolts for fixing the bending rollers - for them it is necessary to make slots in the channels, allowing the bending parameter of the pipe to be adjusted by changing the rollers.

Thus, if you have all the necessary items and the desire to work with your hands, you can assemble your own pipe bender without any problems.