How to make a pipe bender with your own hands drawings. We make a pipe bender for a profile pipe with our own hands. How to make a hydraulic pipe bender at home

When arranging a site or in preparation for the summer and garden season, there is a need for arcs from a profile pipe. They are needed when constructing a greenhouse, assembly or canopy. It is unprofitable to buy already bent arcs - the price is two times higher than for the same flat rolled product. The way out is to do it yourself, and in order to facilitate the process (it’s very difficult with your hands), you need to make a pipe bender for a profile pipe. You will need a channel or corners, rolling rollers and some more details. Of the tools - a grinder with a disk for metal, a welding machine, a ruler.

Profile bending design

The machine for bending a profile pipe is structurally different from the usual one. This is due, firstly, to the greater resistance of the profile to bending loads, and secondly, to the fact that the bending radius is usually required to be large. Therefore, there are three rollers in the design. Two of them are installed permanently, one remains mobile. With the help of a movable roller, the radius of curvature changes. In general, there are two types of pipe bender for a profile pipe: with a middle movable roller and with an extreme one (right or left - optional).

Pipe bender with middle movable roller

Two extreme rollers are fixed on the body. They are raised above the base plane. For the middle roller, a special U-shaped frame is brewed. In the middle of its jumper, a long clamping screw of large diameter is installed. A third roller is attached to the lower end of this screw (can be welded). By rotating this screw, the roller lowers and rises, changing the bending radius of the profile pipe.

A cloud is welded to one of the fixed rollers, with the help of which the pipe is rolled through the machine. In order to be able to apply less effort for rolling, two fixed rollers are connected by a chain. For efficient transmission of torque, sprockets are welded to the rollers (possible from a bicycle), a chain is selected for them. Such a simple mechanism makes bending a profile pipe much easier.

With extreme movable roller

In this design, the right or left roller is made movable. It moves along with part of the base. This part is connected to the rest of the frame with powerful metal loops.

Drawing of a bending machine for a profile pipe with a lifting platform

You can change the height using a jack, as shown in the drawing. The height of the platform in this case is selected depending on the height of the jack. The bending radius is changed by lifting the movable part of the table.

Unlike the previous design, this pipe bender for a profile pipe is driven from the central roller - a handle is welded to it. To reduce the force required, it is also possible to weld the sprocket to two fixed rollers and transmit the torque using a chain.

What materials and design nuances are needed

The base of the pipe bender is made from a channel or two welded corners. The thickness of the shelves is at least 3 mm, select the width of the shelves and the back of the channel according to the available parts. One rule - the base must be massive and reliable.

Several holes can be made along the edges of the platform. Through them, you can fix the machine to some kind of heavy base using large-diameter self-tapping screws. Fixation is necessary, since when bending pipes with a thick wall, considerable effort has to be applied and it is more convenient to work if the machine is firmly fixed.

A few words about rollers. They should be made of good quality, preferably hardened steel. It is on the rollers and on the axles that hold them that most of the load falls.

It is necessary to say about the form of rollers. They should not be smooth - there should be rollers along the edges that will not allow the pipe to “walk” during rolling. Only under such conditions will the arc from the profile pipe be even, and not twisted. Ideally, each pipe size needs its own rollers. But then the design becomes more complicated - they need to be made removable, to think over a reliable method of fastening. The second option is to make videos of complex shape, such as in the photo. Carve several steps for different sizes of pipes.

The same photo shows that the upper part of the bed is uneven, but notched. With the help of such teeth, it is possible to rearrange the rollers at different distances and thus also adjust the bending radius.

In general, they assemble home-made bending machines for shaped pipes from what is at hand or what they find / buy inexpensive. Who has the opportunity - grinds rollers, inserts bearings. Those who do not have such an opportunity use what they have - up to the bushings from bicycle wheels. In general, it is necessary to understand the design and

Tricks to make pipe bending easier

Bearings are used to make the rollers move better. But, in principle, for a homemade pipe bender, which will be used only occasionally, you can simply make holders from a corner or channel. Make a hole in them, which is slightly larger than the axis on which the roller will be mounted. Pass this axle with a roller put on through the holes of the holders and somehow fix them (at least weld a couple of points that will be stoppers). During operation, for a better move, lubricate the friction points with a thick grease such as Litol. This is not suitable for industrial and semi-industrial production, but for making arcs for a greenhouse or a gazebo with your own hands - just right.

There is another trick that helps to reduce the required force when bending a profile pipe. You can use the principle of increasing transmission as in a bicycle. By the way, you can use sprockets from a bicycle. In this case, the handle that drives the rollers is welded to a small asterisk. It is installed somewhere on the body. Larger sprockets are welded on the shaft axis (but the teeth with the same pitch). All this is connected by a suitable chain.

With such a torque transmission device, an electric drive is not needed - it will be easy to work

And one more improvement - with the constant use of a pipe bender for a profile pipe, it makes sense to mechanize it. In this case, they put a motor that runs at low speeds.

The procedure for bending a profile pipe on homemade machines

You are unlikely to be able to get the required bending radius at a time - too much effort is required for this. It is impossible to create it manually. Get the required bend in several passes:

First, the rollers are set so as to obtain a slight bend, the pipe is rolled in one direction, then it is taken out of the rolls, unfolded and inserted with the other side. It is necessary to unfold to get an evenly curved pipe.
With the same position of the rollers, it is pulled several times until the curvature is no longer added.
If the required bending radius is not reached, change the position of the roller and repeat the steps again.

The change in the bending radius is obtained gradually, otherwise you cannot make an arc from a profile pipe on a home-made pipe bender. What if you need to repeat the same bend? Make a graduation - note to what height the roller moved, how many times it was rolled in each position. When repeated, the differences, if any, are insignificant.

The complexity of bending lies in the fact that there is no scale and it is difficult to get the intended bending radius without experience. Sooner or later you will get it, but a lot of material can be spoiled.

Video materials

Explanations and photos are good, but seeing the assembly process or the work of the finished unit is much more useful. The first video shows the process of assembling (welding) a manual pipe bender for a profile pipe. The variant with a movable middle roller is chosen.

The second video is about the operation of a simple pipe bender with a movable platform. This option is not suitable for large sections, but it is able to bend a pipe of a small section up to 40 * 40 mm.

How to bend a profile pipe without a machine

There are two ways to get an arc from a profile pipe without a profile bender - using welding and a template. Let's start with welding.

Get an arc by welding

The profile pipe is cut with a grinder on one side. They are made after 15-30 cm, depending on the required radius, section and wall thickness. The cuts should not touch one side - the one that will be outside.

The spare part prepared in this way is bent, giving the desired bend. For reliability, the edges of the arc can be fixed by welding a rod to them. Then they pass through all the cuts by welding, welding them. And the last stage is the grinding of the welding spots and the treatment with anti-corrosion compounds.

Using a template

Thin-walled profiled pipes can be bent by hand using templates. If you need some special shape, it can be cut from a piece of thick plywood or chipboard, fixed to the table with clamps. On the workbench, where we will bend the pipes, we make 8-10 holes. The template is placed near these holes.

At one end of the pipe, the holes are repeated; with their help, the pipe is attached to the workbench. Now the free end of the pipe begins to be pulled smoothly, forming a bend that repeats the shape. You need to pull smoothly, without jerking.

The template can also be made on the ground. Pipe-pegs are driven into the ground (at least half a meter deep). They form the required arc. For emphasis, two additional stakes are hammered, which are located away from the arc. The distance that you need to step back to the side is slightly more than the width of the pipe.

Having inserted the pipe, it is pulled towards the arc. Great effort is needed, hard work. It can only be obtained with a thin-walled seamless pipe. The seam has too much resistance in the seam area. It is very difficult to overcome it manually.

Pipes having a square, rectangular or oval section are called profile pipes. To assemble a pipe bender with your own hands, you need to find out which pipe you are going to work with and, starting from the pipe profile, assemble the pipe bender.

In the construction of sheds, small architectural forms, greenhouses - such material is used no less than a traditional pipe. Builders prefer this section because of the flat surfaces on which it is convenient to mount the roofing material. And the appearance of such a pipe is much more respectable.

In processing a professional 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 from rolls, levers and a bed. 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. Further, the profile pipe is bent around the template of the required shape.

If necessary, the bending point can be preheated with a blowtorch or gas burner.

IMPORTANT! With this method, it is necessary to control the side walls of the workpiece. If the critical radius is exceeded, the pipe will collapse like a house of cards.

Filling with water

In fact, bending a profile with water is pointless. So you have to freeze it first. To do this, the pipe is plugged on one side with a cork (you can use ordinary plasticine), filled with water and exposed to frost.

Important! The other end of the workpiece is left open so as not to "break" the pipe when the ice expands.

A frozen professional pipe is bent on a template. Of course, you can’t use a burner or a blowtorch, otherwise the whole point of filling with ice will disappear. In this way, it is good to bend thin-walled copper or aluminum pipes.

Spring (homemade mandrel)

Preliminarily, a spring is twisted from a steel wire, the dimensions of which are 3-5% less than the internal section of the profile. The finished tooling is placed inside, and the corrugated pipe can be bent in the traditional way around the template. After completion of work, the spring is removed, aligned and can be reused.

Profile pipes are used as a material no less than round pipes. Performing installation work with them, you also have to cut, bend, sharpen, cook. Without the appropriate equipment in such work can not do in any way.

It is not always possible to buy ready-made fixtures for a locksmith and plumber, often you have to make the equipment yourself. For example, to make a pipe bender of a profile pipe with your own hands is quite within the power of everyone. We suggest that you familiarize yourself with the three most popular options and the technology for their construction.

The use of a special tool that allows you to easily and simply bend pipes, including profile pipes, can already be considered a plumbing tradition. Meanwhile, for all the time of locksmith practice, a number of the simplest methods for obtaining folds without using a special tool have been invented.

Look - you may not have to build a pipe bender at all. True, it should be said that such an approach is not always ready to fully satisfy the needs for folds. Especially if you want to bend the profile pipe in several places at once and under different radii.

It is easiest to bend a profile pipe qualitatively and beautifully with the help of special devices - pipe benders. But in some cases, it is quite possible to bend profile pipes on your own.

The simplest artisanal ways to help make one or two folds without using any equipment:

filling the inner cavity of the pipe with sand;
filling the inner cavity of the pipe with water, followed by freezing;
use of a homemade mandrel;
trimming the profile wall along the inner radius.

When there is a need to bend a profile pipe at one, maximum two points remote from each other, it is quite reasonable to apply simple methods:

Fill the inner area of the profile pipe with fine river sand.
Close end pieces tightly.
Bend the profile with your hands according to the template in the right places.

Similarly, work is performed with a pipe filled with water. But in this option, the water must be frozen. Not always working conditions allow such a procedure.

To bend the pipe without deformation and to a given radius, it is enough to fill its inner area with ordinary river sand. This method is applicable to work with thin-walled pipes.

Another similar way is to use a mandrel - a steel spring slightly smaller than the inner diameter of the pipe itself. The spring is placed inside, after which a fold is performed.

This way you can manually bend thin-walled pipes. For profile products of a more powerful configuration, these methods are not suitable.

It is easy to bend a profile thick-walled pipe using the “undercuts” method. As a tool, you can take a hacksaw for metal or a circular saw. On a bent pipe, the joints of the cuts are welded by welding

Thick-walled powerful profiles can be bent at one or two points in a simple way using technological undercuts. The technology involves cutting small segments of the pipe wall along the inner radius (for example, with a grinder).

Then the profile is bent until the borders of the cuts are connected. The junction points of the borders of the undercuts are welded using electric welding.

Image Gallery

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 buy it on the construction market or in a store.

One of the simplest types of pipe bender for profiled pipes

Serial devices differ in principle of operation, they can have different types of drives, however, some experience is required to work on any of these devices. Limits the use of devices manufactured in a production environment, and the fact that they are not cheap. A good way out in all such situations will be the independent manufacture of a device designed for bending profile pipes, for which you can use improvised means.

Required structural elements

The scheme of operation of the pipe bender is very straightforward

To make a pipe bender with your own hands, you can use the 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 the elements of the device;
metal profiles from which the frame of the device will be made.

Very often, a profile pipe bending machine is made with rollers that are made of wood or polyurethane. When choosing such materials, one should take into account the strength characteristics of the pipes that will be bent. If this requirement is neglected, then the working elements of a home-made device may simply not withstand the load and collapse.

Drawing of a pipe bender: the design of the pressure roller attachment is visible in the section

To understand how to bend a profile pipe on a home-made device, it is important to understand what technology this process uses. As a rule, pipe benders use the principle of rolling or rolling, which minimizes the risk of fracture and damage to the pipe.

To make a bend on a profile pipe using such a device, it must be inserted between the pipe bender rollers and turn the handle. The use of such a simple bending device makes it possible to obtain bends on a profile pipe that fully correspond to the specified parameters.

Pipe bender using a jack

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

ordinary jack;
metal profiles and a shelf necessary for the manufacture of 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 placed 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 should turn the handle that drives the chain and, accordingly, the equipment shafts.

Inverted jack option

Pipe bender manufacturing process

To make a device for obtaining a bend of profile pipes, you must perform the following procedures.

Prepare a reliable frame, the elements of which are connected by welding and bolting.
According to a previously prepared drawing, install the axis of rotation and the shafts themselves, two of which are placed above the third. The distance at which the axes of such shafts are located determines the bending radius of the profile pipe.
To drive such a 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 bring such equipment into action, a handle is needed, which is connected to one of the shafts. It is due to such a handle that the required torsional force is created.

Drawings of a pipe bender for professional pipes

Pipe bender manufacturing instructions

It is not difficult to make a pipe bender for a profile pipe on your own if you follow the following technological sequence.

Gears, bearings and rings are placed on the pressure shaft, which are connected to it with a key. First, a drawing of such a shaft, a cage for bearings and rollers is developed, then these parts are machined, 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 threading.
Now it is necessary to make a shelf, for which a channel is used, in which holes are also drilled and threads are cut, which are required when mounting the pressure shaft.
After completing the preparatory measures, the entire structure of the equipment must be assembled, for which welding and bolted connections are used. First of all, the frame is mounted, 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 that, it is necessary to install side support shafts on a home-made pipe bender, on one of which a handle is attached.
The final touch is the installation of a jack on the pipe bender.

Some subtleties of the installation work:

the pressure shaft, fixed with dowels, is additionally screwed to the shelf;
installation of the pressure roller is carried out according to the following scheme: the shaft is installed on the shelf, to which the nuts for the springs are preliminarily welded, after the installation work is completed, the shelf is turned over and suspended on the springs;
chain tension is carried out using a magnetic corner, which is used as a holder;
when twisting the stars, dowels are used, which are pre-made from the grower;
the drive handle for the bending machine is made with a turning tube;
a jack on such a home-made device is installed on a suspended platform, for which bolted connections and welding are used.

Production of a hydraulic pipe bender

On the Internet you can find a lot of photos and videos on how to independently make a device for bending profile pipes with a hydraulic drive. The manufacturing process of such a pipe bender, equipped with a hydraulic cylinder, an injection device and pipe stops, is a rather laborious undertaking.

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

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

To perform the required bending of the profile pipe using a hydraulic device, it is necessary to insert it into the shoe and fix both ends of it. After that, you need to use the jack, which, with its rising rod, presses on the roller that acts on the pipe and bends it. After 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.

Pipe bender for profile pipes in finished and painted form

Clamping roller moving platform Shaft installation Chain with tensioner Assembly view

To independently make a hydraulic bending device for profile pipes, a photo of which can be found on the Internet without any problems, you must perform the following procedures.

According to the drawing or photo, a structure is made for mounting the shoe and rollers, as well as the frame of the equipment.
A metal plate is attached to the lower platform, on which the jack will be installed. After that, such a device is fixed with bolts and a drive handle is installed on it.
The most important thing is to find suitable rollers for the profile pipe, which should tightly wrap around with their working part. If desired, rollers for a profile pipe, which are installed on a channel at the same height, can be made by hand. The shoe is installed below the rollers, and their relative position is determined by the required bending radius.
To fix the rollers and the shoe, bolts are used, the holes for which are made according to the dimensions indicated in the drawing.

Drawing of another version of the pipe bender

Pipe bending methods using a homemade machine

The question of how to bend a profile pipe with a homemade pipe bender is unlikely to confuse you if you read a few more recommendations. On hydraulic machines, it is possible to successfully bend profile pipes from different materials, as well as thick-walled products. Such an operation can be performed both by cold and hot methods, which involve preheating the pipe section.

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

Another variation with a jack

Cold bending is the simplest bending method and is used for pipes made from ductile materials. The subtlety of such a process is the filling of the pipe before the flexible 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 of materials of increased rigidity, then the answer to it will be the use of the hot bending method.

To the question of how to bend a profile pipe as accurately as possible and without unnecessary labor, some useful tips from qualified specialists will answer.

Removable rollers of various shapes will allow you to comfortably work 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 a single drive roller. Instead of a clamping screw, a jack is often used in such pipe benders.
If you are bending according to a template, then so that the pipe does not slip off it, you can use metal hooks as stops.
If it is necessary 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. So you can change the bending radius of the pipe.

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

Do-it-yourself pipe bender for a profile pipe - diagram, drawings, video

We make a pipe bender for a profile pipe with our own hands. Stages of work, diagram, design drawings and tips for working with a homemade pipe bender.

Homemade pipe bender for a profile pipe: device and manufacturing nuances

The need for a reliable and simple device for bending profile pipes arises when a home craftsman begins to work seriously with metal. Pergola frame, carport, garden bench, workbench…

These and many other designs turn out to be strong and beautiful if the profile metal for them is carefully bent on a special profile bender.

There is always an economical alternative to buying a ready-made machine, since you can make a pipe bender for a profile pipe with your own hands in your home workshop. Before the first workpiece is clamped in a vice, we suggest that you get acquainted with the principle of operation and the existing varieties of homemade pipe benders.

How does a pipe bender work?

The principle of operation of this device is simple: a profile pipe is placed between three support shafts. The central shaft creates pressure that bends the metal at the desired angle.

To bend the pipe in one local area, a point machine is used.

If you need to get an arched profile, then a rolling bending machine is used that combines the bending of the metal with the broach.

Varieties of pipe bending machines

Depending on the drive that transmits force to the profile metal, there are three types of pipe benders:

mechanical (pressure is created manually using a central screw or lever);
hydraulic (a hydraulic jack is used);
electrical (bending force creates an electric motor);
electro-hydraulic (hydraulic cylinder is driven by an electric motor).

It should be noted that a rolling pipe bender with a manual profile drawing is designed for a pipe with a small section (maximum 40x40 mm). It is impossible to stretch a large profile manually. For its bending, powerful machines with an electric broaching mechanism are used.

How to make a bending machine with your own hands?

The basic principle that should be followed when developing a drawing of a homemade pipe bender is the maximum simplicity of design and reliability.

The spot bending machine can be assembled from two pieces of channel, four corners and two scraps of pins from tractor tracks.

The bending of the pipe in it is performed by a standard hydraulic jack with a force of at least 5 tons. A steel "shoe" is installed on its working rod. It can be ordered from a turner or made yourself from an old pulley, the width of the “stream” of which is equal to the width of the profile pipe. By cutting off a half from the pulley and drilling a seat for the jack rod in it, a hydraulic drive mechanism is obtained.

The frame of the homemade device consists of four corners (shelf 60-80 mm) welded to a steel plate. Two channels are welded parallel to the upper ends of the corners. Holes are symmetrically drilled in their walls to control the angle of bending of the workpiece.

The manual pipe bending machine is brought into working position very simply:

Two steel fingers are inserted into the holes on the channel and the stop rollers are mounted on them.
The jack with the shoe is raised so that a profile pipe passes between it and the stops.
Having installed the pipe, they work with the jack handle, creating a bending force.

It is also quite possible to build a rolling manual pipe bender for a profile pipe on your own. For its manufacture, 2 linear meters of a channel will be required (wall height 15-20 cm), from which the base and racks are cut.

For the manufacture of rollers, six short pieces of steel pipe are taken. It will act as a holder for the bearings. Therefore, its inner diameter must be equal to the outer diameter of the bearing. Having ordered three shafts from the turner for mounting the bending rollers, they begin to weld the bed.

For the machine under consideration, the extreme right support plays the role of a guide that sets the profile bending angle. It is mounted on a channel hinged to the main frame using conventional door hinges. The jack rests against the turntable with its working rod and raises it.

By rotating the handle, mounted on the shaft of the intermediate stop, the profile is pulled through the machine.

You can adjust the bending radius of the profile not only by tilting the rotary channel, but also by the outer rollers. To do this, they are not welded tightly to the frame, but are made movable (holes are drilled in the channel and base plates).

Instead of a hydraulic jack, a screw car jack can be used to lift the outer roller.

Do-it-yourself pipe bender for a profile pipe - device diagrams, photos and videos

Learn how to make a pipe bender for a profile pipe with your own hands. Design options, description of manufacturing features, photo and video materials.

How to make a profile bender with your own hands

When arranging a site or in preparation for the summer and garden season, there is a need for arcs from a profile pipe. They are needed when constructing a greenhouse, assembling a gazebo or a canopy. It is unprofitable to buy already bent arcs - the price is two times higher than for the same flat rolled product. The way out is to do it yourself, and in order to facilitate the process (it’s very difficult with your hands), you need to make a pipe bender for a profile pipe. You will need a channel or corners, rolling rollers and some more details. Of the tools - a grinder with a disk for metal, a welding machine, a ruler.

Profile bending design

The machine for bending a profile pipe is structurally different from the usual one. This is due, firstly, to the greater resistance of the profile to bending loads, and secondly, to the fact that the bending radius is usually required to be large. Therefore, there are three rollers in the design. Two of them are installed permanently, one remains mobile. With the help of a movable roller, the radius of curvature changes. In general, there are two types of pipe bender for a profile pipe: with an average movable roller and with an extreme one (right or left - as desired).

Do-it-yourself pipe bender for a profile pipe can be made in different sizes

Pipe bender with middle movable roller

Design of a pipe bender for a profile pipe with a movable middle roller

With extreme movable roller

In this design, the right or left roller is made movable. It moves along with part of the base. This part is connected to the rest of the frame with powerful metal loops.

Drawing of a bending machine for a profile pipe with a lifting platform

Pipe bender for a profile pipe with a lifting platform

Unlike the previous design, this pipe bender for a profile pipe is driven from a central roller - a handle is welded to it. To reduce the force required, it is also possible to weld the sprocket to two fixed rollers and transmit the torque using a chain.

What materials and design nuances are needed

This is how the bed looks like in welded racks for attaching a movable roller

A few words about rollers. They should be made of good quality, preferably hardened steel. It is on the rollers and on the axles that hold them that most of the load falls.

It is necessary to say about the form of rollers. They should not be smooth - there should be rollers along the edges that will not allow the pipe to “walk” during rolling. Only under such conditions will the arc from the profile pipe be even, and not twisted. Ideally, each pipe size needs its own rollers. But then the design becomes more complicated - they must be made removable, a reliable method of fastening should be thought out. The second option is to make rollers of complex shape, such as in the photo. Carve several steps for different sizes of pipes.

Rollers for bending profile pipes of different widths

Tricks to make pipe bending easier

Example of turned rollers

With such a torque transmission device, an electric drive is not needed - it will be easy to work

And one more improvement - with the constant use of a pipe bender for a profile pipe, it makes sense to mechanize it. In this case, they put a motor that runs at low speeds.

The procedure for bending a profile pipe on homemade machines

You are unlikely to be able to get the required bending radius at a time - too much effort is required for this. It is impossible to create it manually. Get the required bend in several passes:

First, the rollers are set so as to obtain a slight bend, the pipe is rolled in one direction, then it is taken out of the rolls, unfolded and inserted with the other side. It is necessary to unfold to get an evenly curved pipe.
With the same position of the rollers, it is pulled several times until the curvature is no longer added.
If the required bending radius is not reached, change the position of the roller and repeat the steps again.

Electric tube bender

How to bend a profile pipe without a machine

There are two ways to get an arc from a profile pipe without a profile bender - using welding and a template. Let's start with welding.

Get an arc by welding

The result of bending by welding

Using a template

The process of obtaining an arc from a profile pipe using a template

Pattern on the ground

Do-it-yourself pipe bender for a profile pipe

Home craftsmen often use a profile pipe. You can expand your creative possibilities with the help of a pipe bender, which you can do yourself

How to make a pipe bender for a profile pipe with your own hands

If you like to create unique building structures, engineering structures, good equipment for a home workshop will come in handy. When selecting specific types of equipment, it is necessary to pay attention to the mechanisms discussed in this article. To make a pipe bender for a profile pipe with your own hands - study the detailed instructions, videos, photos, drawings. With the help of these materials, it is not difficult to implement the corresponding project.

Electric pipe bender

Do-it-yourself pipe bender for a profile pipe: basic data

Before studying the working documentation and algorithms of installation operations, it is necessary to accurately determine the intended purpose of the product. A do-it-yourself pipe bender for a profile pipe must be designed for certain efforts, workpiece sizes, and materials. It is easier to establish meaningful criteria after familiarizing yourself with the parameters of fixtures tested in practice.

What are these devices for?

Elements of building structures of complex shape are created using different techniques:

Fastening with bolts and screws is not always able to provide the necessary reliability. Such connections are destroyed by vibration, additional loads are formed.
Welding has an excessive thermal effect, which destroys the original structure of the materials. To make the connection reliable and durable, a good qualification of the performer of the work is required. Special equipment consumes a lot of electricity. In some technological processes, expensive consumables are used and special conditions are created.
Adhesive joints are limited resistance to loads and influences of various nature.

The disadvantages listed above are completely or partially eliminated if the workpiece is bent in the right way. In order to avoid damage, accurate dosing of loads and speeds is required. In some places, it is necessary to maintain the integrity of the walls with external supports.

To reproduce such techniques without errors, special devices, machines are used.

What engineering solutions will be applied in practice

With a relatively low strength of materials, it will be enough to use a suitable stencil.

The workpiece is wound on a roller, forming the required angle

To create the necessary force, a lever mechanism is installed here. A metal pin is used to fix the free section of the pipe. It is installed in suitable grooves of the "comb" before performing work operations.

Machine "crossbow" type

Using the example of this factory sample, it is easier to study the design features:

The handle (1) regulates the automatic stroke of the piston in the opposite direction. This solution reduces the burden on the user.
A hydraulic system is installed inside the body. When moving the handle up and down, a force of up to 150 kN is transmitted to the working piston (8). This is quite enough for fast bending of workpieces made of durable metals.
The support rollers (3, 4) are installed in the required holes of the open frame (5, 9). They do not damage the surface of the pipe, but provide a secure fit.
This removable segment (6) is designed to be bent at an angle of 90°. But with the appropriate configuration, you can install on a similar product of a different shape.
The robust housing (10) is mounted on three supports (7). Rubber pads prevent the machine from moving during work.
In addition to cleaning from dirt, occasionally check the condition of the oil filter (11). No other regulatory procedures are required.

For rolling, a mechanism with three rollers is used, which are movably fixed

Running in

In this technique, a workpiece of the desired shape is used. A pipe is pressed against it using a rotating roller and a lever.

With the right choice of technology, a straight pipe can be bent as follows
With the help of appropriate equipment create such decorative products

Important! Before bending a workpiece using a certain radius, you should study specialized reference books. They provide data on the permissible deformations of pipes made of different materials, with different wall thicknesses. If these instructions are violated, visible or hidden defects are formed in the finished products.

Relatively small mechanical loads on working tools are created by levers and manual force. To work with durable metals, the equipment is equipped with hydraulics, electric drives.

A stationary machine is useful for quickly completing large-scale tasks
The manual device is mobility, the ability to perform work in a limited space

Creating a do-it-yourself pipe bender for a profile pipe: drawings and other preparatory operations

A simple fixture for bending aluminum and plastic blanks is shown in this figure.

Such a device is not difficult to assemble quickly using improvised means.

For the manufacture of such a structure, a solid board is needed. After marking, a round profile is cut out of it with an electric jigsaw. The rest is used to make the support element. The created parts are rigidly attached to the supporting surface. For the strength of the joints, in addition to screws, clamps are used. Next, the pipe is bent by hand until the desired shape is formed.

Before creating this simple pipe bender for a profile pipe with your own hands, it is recommended to make an elementary drawing with dimensions. A template made of thick paper, cardboard, on which markings will be applied, will come in handy. It is clear that for the manufacture of more complex structures, it is necessary to prepare full-fledged design documentation.

Assembly drawing
Pipe bender with screw drive of the working shaft
The design is not difficult for self-manufacturing Professional drawing indicating the steel grade and other parameters
Such a simple device can be done quickly with your own hands.

It is not necessary to strictly adhere to engineering standards in order to make a pipe bender for a profile pipe with your own hands, a schematic image is quite enough. It is only necessary to indicate all the dimensions, decide on the materials, the technological process and the components. The project will help solve several practical problems:

In the process of preparation, it will become clear whether it is necessary to use welding and other special equipment.
A complete list of necessary components will be needed for targeted visits to certain stores.
We must not forget that the machine must be protected from adverse external influences using wood impregnation, metal painting.
Some parts will be too difficult to make on your own. Appropriate orders should be placed with specialized workshops.

Important! When bending strong metal pipes, great efforts are needed. In order not to take unnecessary risks, you can use drawings of a proven design, or copies of an industrial design.

How to make a pipe bender for a profile pipe with your own hands

To make a pipe bender for a profile pipe with your own hands - study the detailed instructions, videos, photos, drawings. With the help of these materials, it is not difficult to implement the corresponding project.

The need for bending profile pipes in the household arises quite often, whether it is the preparation of blanks for the construction of a metal frame of a greenhouse or a canopy, or the manufacture of pipeline parts of complex configuration. For this, industrial-made devices are often used, however, purchased products are not a cheap pleasure. It is much more profitable to make a pipe bender with your own hands, especially since no scarce parts are required to manufacture the unit, and its design is available for repetition in any garage. A home-made fixture will allow you to get a pipe with the desired radius of curvature and at the same time avoid deformations and creases on its surface.

Purpose and types

The pipe bender is an indispensable tool when you need to delicately and accurately bend a round or shaped metal pipe.

The bending of metal profile pipes is directly related to their diameter, wall thickness and material of manufacture, therefore, metal-roll manufacturers always indicate the minimum radius of deformation in special tables.

Table for calculating the bending radii of steel pipes depending on the diameter and wall thickness

It is not easy to bend a hollow pipe without creases and deformations. At home, for this, it is filled with sand, heated to redness with a gas burner or blowtorch, and then bent “by eye”. Of course, this method, with high labor intensity, is not ideal due to low quality and low accuracy.

To obtain a bend of the required curvature and not damage the part, special devices - pipe benders - allow. Depending on the length of the fragment to be bent, two types of devices are used:

lever pipe benders;
rental units.

The most common products are lever-type pipe benders. In such devices, the force is applied in the right place, and the bend itself repeats the shape of the segment (template), which in some devices can be removable. As a rule, the package of such units includes several segments for pipes of various diameters. In addition to segment devices, the industry produces mandrel and crossbow pipe benders, the bending shape in which is set by two guide rollers and a pressure template (mandrel). This design allows cold working of round steel pipes in short sections. By the way, compact crossbow pipe benders are the most popular tool among utility installers.

Simple, fast and high quality - these are the advantages of crossbow pipe benders that attract professional installers

Depending on the design of the lever bending device, it can have any type of drive:

hydraulic;
pneumatic;
electric.

Often the principle of operation of the unit provides for heating the pipe (external, or with the help of heated air passed inside the rolled product), which improves its plasticity, and, accordingly, the quality of the curved section.

If it is necessary to obtain a bend of a large radius, rolling fixtures are used. Their design includes two guides and one pressing shafts (rollers). The pipe is pulled between the moving elements, setting the degree of bending by the force of the pressure roller. If it is necessary to obtain a large radius of curvature of the workpiece, the procedure is repeated.

The rolling fixtures can have an electrical transmission for the guide shafts, as well as a hydraulic, mechanical or pneumatic drive of the pressure roller.

Designs of homemade devices

The simplest option available to most novice craftsmen is to bend pipes according to a pre-made template. A similar method is used when it is necessary to obtain a large number of the same type of blanks.

Bending a pipe on a wooden template is the easiest way to solve the problem

As a template, you can use a structure made of wooden boards. The thickness of the wood is chosen based on the diameter of the pipes to be bent - the board should have a margin of 2–3 cm. So that the metal profile does not slip off the template during operation, the ends are treated with a slight slope.

The structure is fixed to the floor or other surface in any way, mounting a stop for the pipe nearby. Having inserted the profile into the gap between the template and the thrust element, gently and gently press on its other end, pressing the pipe against the template. In order to lighten the pressing force, you can use a suitable size lever or adjust the winch.

The winch can facilitate the process of bending pipes using a template

In a similar way, a metal profile of small diameter can be bent. If it is required to change the configuration of the pipe by more than 1 inch, then the template is equipped with pieces of powerful reinforcement. To do this, holes are made in the concrete slab along the required trajectory, into which guides are inserted in the form of pins from pipe sections, fittings, etc. Bending is performed by fixing the edge of the metal profile by welding.

The advantage of this method is its cheapness and simplicity, however, the accuracy of the obtained blanks and the quality of their processing leave much to be desired. In addition, the template will have to be made every time you need to get a bend of a different radius.

Factory-made snail pipe bender

For the manufacture of a large number of the same type of workpieces with a small radius of curvature, you can use a snail pipe bender. This unit consists of two pulleys (wheels) of different diameters, mounted on shafts. Having fixed the end of the pipe on the impeller, a smaller-diameter roller (driving wheel) is pressed against the workpiece, while rolling it along the workpiece. As a result, the pipe goes around the surface of a large pulley, repeating its shape. The only drawback of this method is the impossibility of obtaining roundings of large radius.

The most versatile and practical are home-made rolling pipe benders (bending machines), in which you can set any angle of deformation of rolled metal. The simplest design of a rolling unit is a base with drive shafts fixed at a certain distance from each other. The pressure on the pipe is carried out by a movable roller, and its broach is carried out due to the rotation of the drive shafts. As a power drive of such devices, screw devices, jacks, winches and electric motors are used. The rolling machine is the most difficult to replicate at home, as it requires turning and welding. However, there are many variations of its design made by amateurs, which indicates the high popularity of this solution. With the help of such a device, a bend of any configuration is obtained, and the process itself is often automated. The only thing such a device cannot cope with is obtaining the minimum radius of curvature of the metal profile in a small segment.

Video: Homemade rolling type bending machine

We make a pipe bender with our own hands

For the manufacture of a pipe bender, you can use the drawings of finished structures. After looking at several options and commensurate the complexity of the units with their capabilities and the availability of the necessary parts and materials, you can choose the most optimal scheme. For your judgment, we present two models of pipe benders for self-assembly - a manual unit for small pipes and a semi-automatic type bending machine.

Manual volute bender for small radii

To correctly bend a profile pipe, you need to understand the physics of the process well. In manual pipe benders, the circular bending method is most often used, which avoids the risks associated with creases, cracks and other damage to pipes. To bend rolled metal in such a unit, it is enough to fix the workpiece in the fixture and press the lever. Bending occurs when a roller is rolled through the pipe, pressing the part against the main wheel.

Materials and tools

To make a manual pipe bender you will need:

metal sheet with a thickness of at least 6 mm;
Working wheel;
pressure roller
steel corners 50x50x2.5 mm;
piece of thick-walled pipe Ø25 mm;
axis of rotation (sleeve or bearing assembly);
piece of square bar 20x20x40 mm;
nuts and washers;
angle grinder;
welding machine;
a hammer;
measuring tool.

In the process of work, do not forget about safety precautions. This is especially true when working with cutting and welding equipment.

Calculation of a pipe bender and drawing up a drawing

Before starting work, it is necessary to decide which bending radius of the profile pipes will be most in demand. Depending on this, the size of the impeller is selected. It is this value that will correspond to the inner radius of the resulting knee.

Pipe bender-snail assembly

The drawing is designed for profile pipes with a diameter of up to 1 inch. The bending radius that can be obtained with this pipe bender is 125 mm (half the diameter of the impeller). If you need a bending unit with other parameters, use the method for calculating the dimensions of the pipe bender.

The main dimension of the pipe bender fork is the distance between the axes of the impeller and the roller (indicated by the letter a=200mm). In our case, the center gap is selected taking into account the maximum size of the processed profile pipe d = 25 mm, however, it is desirable to add a couple of millimeters “in reserve” to this value.

The center distance can be determined by the formula a = d + r1 + r2 + 2, where d is the diameter of the profile pipe, and r1, r2 are the radii of the impeller and roller, respectively.

If a roller and a wheel with a groove (a kind of brook pulley) are installed in the design of the bending device, then the measurement is carried out starting from the bottom point of this part.

Fork pipe bender-snail

To determine the size of the fork, the gap between the roller and its base is assumed to be 10 mm, and a 30 mm margin is added to fasten the impeller axle.

Fork length c = a + r1 + 10 + 30 (mm).

To determine the internal clearance between the side legs of the fork (b), add 1 to 2 mm to the wheel thickness.

You can make the pipe bender more versatile by drilling several holes in the side surfaces of the fork. By rearranging the roller axis, the distance between the working surfaces of the rotating parts is changed.

Step-by-step instructions for making a manual pipe bender

According to the drawing of a manual bending unit, it can be seen that it consists of several main parts:

base in the form of a thick metal plate;
Working wheel;
video clip;
fork.

Our instructions will help you perform the work consistently, avoiding mistakes and inaccuracies.

Make the impeller and roller. Of course, having a lathe in your workshop will be a huge plus, but even if you do not have such equipment, these parts are not a problem. Any turner will be able to carve pulleys at a very reasonable cost.
In the manufacture of moving parts, you should not save. Be sure to make a groove in them for a pipe of maximum diameter, and also carve a nest in the roller for any suitable rolling bearing. If there is a need to change the configuration of the knee surface, the trough of the impeller or roller is made curly. When rolling, the roller will leave the required imprint on the outer surface of the knee, and the wheel on the inside. To facilitate the task of the turner and further reduce the cost of the device, instead of a roller, you can install a pair of ball bearings of a suitable size.
Pipe bender impellers can be made with a chute of any configuration
The image clearly shows the ball bearings installed instead of the roller.
On the same machine, it is necessary to make axles for the impeller and roller. The thickness of the parts is taken equal to the inner diameter of the selected bearing. The length of the axle for the roller is equal to the width of the fork in terms of the outer dimensions. The axis of rotation of the impeller will be slightly longer, since the thickness of the base plate of the bender will also have to be taken into account. By refusing to mount bearings, the design can be greatly simplified. In this case, long bolts with nuts can be used as axles. However, it should be understood that it will be more difficult to bend pipes with this device.
For the manufacture of a fork, you need metal with a thickness of at least 6 mm
The side surfaces and the back wall (base) of the fork are cut out of sheet metal, as well as a piece of thick-walled pipe as a lever.
According to the drawings, holes are drilled in the fork for the wheel and roller axles.
Weld the fork parts. Particular attention should be paid to all right angles of this structural element.
Attaching the lever to the fork end-to-end will be unreliable due to the large applied force. It is best to make a hole in its back wall, into which the edge of the pipe will enter. Having scalded this joint by welding, the most durable joint is obtained.
Using a grinder, the base (frame) of the device is cut out and a hole is drilled in it for the stationary axis of the impeller.
If necessary, a bearing is pressed into the roller.
The roller is inserted into the fork, after which it is fixed by welding or nuts.
Fork pipe bender-snail assembly
The fork assembly is installed on the base, fixing the impeller axle in the same way as when mounting the roller.
A piece of square section is welded as a clamp of the processed pipe.

Holes are drilled in the corners of the base of the pipe bender for attaching the fixture to the workbench. In order for the device to be not only functional, but also aesthetic, in the process of work, the places of welding joints must be cleaned and the sharp edges of the workpieces are treated with a roughing wheel. In order to protect against rust, the finished product is painted with enamel.

Bending machine for profile pipes

Bending long shaped pipes requires not only effort to deform them, but also a mechanism for pulling parts to the desired distance. Often, in the design of home-made bending machines, not a screw is used, but a jack or winch, and the drive includes an electric motor.

Drawings of homemade devices

Bending machine. Side view Pipe bender with upper roller drive Pipe bender with variable distance between rollers The simplest pipe bender of the pull type

In the bending machines shown in the drawings, a threaded gear is used to press the roller. In our design, we will use a hydraulic jack, as well as a manual drive using parts from the gas distribution mechanism of automobile internal combustion engines.

Tools and materials

In order to get started, prepare the following parts and materials:

corners for the machine bed;
round or shaped pipes for the frame;
working and broaching shafts (rollers);
jack;
springs;
chain transmission;
tensioner;
bearing supports assembled with bearings;
pen;
channel for fastening;
bolts and nuts.

In work, you will need manual and electric metalwork tools:

angle grinder (grinder);
welding machine;
electric drill and a set of drills for metal;
a hammer;
set of wrenches;
measuring tool.

Do not neglect personal safety equipment. When working with a grinder, be sure to use a protective shield or goggles, and carry out welding processes in tight overalls and special gloves. It should be remembered that it is forbidden to work without a welding mask and carry out electrical work on a wet surface and in the rain.

Instructions for making a bending machine

Dividing the pipe bender manufacturing process into several stages will help to organize the work more clearly.

Make broaching (support, drive) and pressure (working) shafts. In the absence of skills in working with a lathe, you will have to contact a specialist. Be sure to remind the turner to turn the rollers with shanks to install the sprockets. It is best if you take these items with you.
The design of the working shafts should provide for the possibility of installing drive sprockets
Any sprockets and chain can be used. For example, from the gas distribution mechanism of passenger car engines.
Mount the bearings on the shafts and install the drive gears on the keys.
In the design of the machine, you can use drive sprockets and bearing supports from automotive equipment
Make a bending machine frame using a welding machine. To do this, first make a square frame with support legs, and then mount a structure on it, along which the plate with the pressure roller will move.
Making a bending machine bed
A steel U or H-shaped channel is used as a plate. To mount the pressure shaft, holes are drilled along the edges of the plate according to the connecting dimensions of the bearing supports.
Fabrication of a frame for the installation of a base plate
A section of the channel with a roller is suspended from the upper part of the frame on four springs, for which nuts are welded at the corners of the plate and frame as mounting loops. After that, a hydraulic jack is mounted.
Mounting the pressure roller
Install and attach the drive shafts to the bottom frame. In the profile on which they are installed, drill several holes to offset the rollers to the center. This will allow you to more accurately change the bend radius if necessary.
Mounting the drive chain and tensioner
Attach a handle to rotate the shafts of the bending machine.
It is advisable to use a handle on which a rotating tube will be mounted. This will make it easier to work with the machine and save your hands from calluses.
The paint will prevent corrosion and ensure the aesthetics of the structure.

After completion of work, they begin testing. To do this, the metal profile is placed on the drive shafts and the working roller is pressed against the surface of the workpiece with a jack. By rotating the handle, the shafts are given a turn, after which the metal profile passes between the lower and upper shafts and acquires a curved shape. The machine is tested on various materials, setting a different degree of pressure on the upper shaft. After that, a conclusion is made about the features of the operation of the pipe bender and its suitability for work.

Video: do-it-yourself design

Variations of homemade pipe benders in the photo

There are many variations of the pipe benders presented above, which are made by craftsmen at home. Some of them are presented in our photo gallery.

Small semi-automatic pipe bender from a car jack and a compact electric motor Screw clamp bender Hand tools bender Compact volute pipe bender Bottom drive pressure roller bender from a hydraulic jack Semi-automatic bending machine for a large amount of work Lever pipe bender Bending machine Manual volute pipe bender Mandrel bender machine with hydraulic jack

Thanks to my versatile hobbies, I write on various topics, but my favorite ones are engineering, technology and construction. Perhaps because I know many nuances in these areas, not only theoretically, as a result of studying at a technical university and graduate school, but also from the practical side, since I try to do everything with my own hands.