Pipe bender diagram. How to make a homemade pipe bender for a profile pipe

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Pipe bender diagram. How to make a homemade pipe bender for a profile pipe - a complete guide with drawings

We welcome our dear reader and bring to your attention an article on how to make a pipe bender for profile pipe with your own hands. If you love tinkering, are building a house or settling in an estate, sooner or later the need will arise, and sometimes it is necessary to bend workpieces.

The process of bending pipe blanks is not too complicated, but it requires devices - pipe benders. It is quite possible to make a bending device yourself.

Profile pipe is a hollow profile of square, rectangular, oval cross-section with a thin wall. Profile pipes are very widely used in construction, industry, mining, and agriculture. Square and rectangular products are also used in everyday life: during the installation of metal structures, for the manufacture of furniture, garden buildings, sheds, greenhouses, fences, gazebos, awnings, pavilions, pergolas. The use of a profile design is due to its high technological characteristics - strength, rigidity, high resistance to crushing or twisting.

At the same time, steel has a certain plasticity - thin-walled pipes can be bent. But when bent, the pipe can bend, form kinks and folds - these defects reduce the strength of the pipes and do not look very aesthetically pleasing. Therefore, they are used for bending special devices– pipe benders.

When laying pipelines and manufacturing bent structures, bending allows you to minimize the number of welds and connecting fittings, which allows you to save a lot of money.

Principle of operation

The operating principle of a pipe bender is to bend workpieces to a given radius by winding them onto a mold or bending roller.

The profile bender saves the time and effort required to bend products in a different way, and allows you to get an even, beautiful bend without loss of strength. The parameters of the workpiece bent by a pipe bender exactly correspond to the specified ones.

Profile bender design

Roll benders come in various designs, including industrial conditions fairly large machines with electric or hydraulic drive are used; for bending a small number of products of small diameters - more compact manual or electric devices.

Classification and types

Pipe benders are classified according to the bending method and type of drive. In addition, pipe benders can be universal or specialized: for round or profile pipes.

The bending process itself can be hot or cold, with or without filling the inside of the pipe with filler (sand or salt).

Classification of devices by drive type

Bending devices can be manual, hydraulic, electric, hybrid - combining molding elements with hydraulic and electric drive. There are industrial units for bending thick-walled pipes, in which the bending point is heated by induction.

Hydraulic devices are manual and stationary, which can bend workpieces with a diameter of up to 75 mm. Electrically driven units (electromechanical) can bend pipes of the most different diameters. Electromechanical units can also bend thin-walled tubes with good quality bending, without folds or creases (see photo - it shouldn’t be like that).

Hybrid units are stationary, they have a hydraulic drive on part of the shafts, and an electric drive on the other part of the shafts.

Manual devices are used either as portable ones (they are used near the site where metal structures are assembled) or for bending small diameters or soft workpieces (copper, stainless steel, plastic). In a household plot or when working in an apartment, pipes of small diameters and in limited quantities are used, so at home it is enough to acquire a manual pipe bender.

Device options based on pipe bending method

According to the method of bending pipes, profile bending can be:

Roller - the workpiece is formed by passing between three rollers.
Crossbow - the workpiece is bent when placed in a special shape, in appearance the design resembles a crossbow - hence the name. One device is usually accompanied by a set of molds for workpieces of various sizes and for various angles and bending diameters.
Segmented - the workpiece is bent by a special segment, while being stretched around the segment.

Lever – designed for manual bending of thin-walled pipes.
Spring - used for copper or plastic pipes, a conductor spring made of thick wire is inserted into the workpiece (sometimes put on top) and.

Mandrel - with filler (sand, salt) or mandrel installed inside the workpiece. The pipe is wound onto a winding roller; a mandrel or filler protects the bend from wrinkles.
Mandless - the workpiece is wound on a bending roller.

How to make a pipe bender for a professional pipe yourself

You can make the simplest profile bending machine yourself. This work is quite within the capabilities of a home handyman. The quality of homemade products is practically not inferior to industrial designs. The performance, of course, differs from models with an electric drive, but the house and estate do not require a huge number of bent products.

Drawings and diagrams

Regardless of how you decide to make a pipe bender, you should first consider the scope of its application - decide what size and shape products you will bend, and with what bending radius. For garden structures and furniture, the bending radius can be 2.5 sides of the section (for round blanks– 5 radii), and can be 10-15-20 sides (for gazebos, greenhouses and other large structures). Then draw a drawing or diagram with exact dimensions. Without a drawing it is impossible to assemble a high-quality pipe bender.

Required design elements

The simplest pipe bender is a template cut out of boards and placed on a base - thick plywood or OSB. Rolled steel is bent by hand. The thickness of the boards should be greater than the diameter or side size of the workpiece - then the bending will be of better quality. You can make a template from hammered into solid foundation(preferably concrete) steel pegs or hooks.

It is enough to simply assemble a manual Volnova machine for profile workpieces. A roller with a radius equal to the bending radius and two metal plates with a second roller attached. The end of the pipe is clamped with a clamp, the roller on the plates rotates and bends the workpiece. The plates are fixed on the same axis with a large diameter bending roller and can rotate. The distance from the large roller to the small one along the axes is equal to 2.5 pipe sizes + pipe size + roller radius (approximately equal to half the pipe size).

There is another version of a profile bender that you can make yourself - with three rollers.

Required tools and materials

For, or rolling pipe bender you will need:

Metal frame (bed) made of rectangular channel.
A durable stand welded from square profiles, channels, angles, or a stable steel workbench.
Three rollers with shafts; the rollers must be turned in such a way that a groove is formed in them with dimensions equal to the dimensions of the bent profile; shafts and rollers are ordered from a turner.
Shaft bearings.
Chain.
Winch.
Clamp.
Corners for guides.

Tools:

Grinder with cutting discs.
Welding machine, electrodes.
Dye.
Electric drill.
Shaft mounts.

Manufacturing process

The frame is secured to a stand or workbench - welded to the stand, secured to the workbench with clamps. Weld the guides. Bearings are mounted on the frame, two lower shafts are mounted in the bearings, and rollers are mounted on the shafts. Shafts and rollers are ordered from a turner.

A double-row chain is put on the shafts, a winch is secured in the middle, and the chain is secured. The pressing movable shaft is secured. The upper pressure roller and shaft move along the guide using a screw.

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

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

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. For bending profile pipes of small cross-section, it is enough simple way 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.

Sand instead of mandrel

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.

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

The frozen corrugated pipe is bent on a template. Of course, you cannot use a torch or blowtorch, otherwise the whole point of filling 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

Next method 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.

Important! Listed methods“work” on muscular strength, therefore they are used only for thin-walled profiles of low strength.

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

IN industrial scale profiled moldings are bent using special machines, many of which are equipped. This does not mean at all that the process cannot be repeated at home.

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 detailed instructions, video, photo, drawings. Using these materials, it is not difficult to implement the corresponding project.

Read in the article

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

Before studying the working documentation and installation operation algorithms, you should accurately determine the intended purpose of the product. A pipe bender for a profile pipe with your own hands must be designed for certain forces, workpiece sizes, and materials. It is easier to establish meaningful criteria after familiarizing yourself with the parameters of devices tested in practice.

What are these devices for?

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.

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

Handle (1) regulates the automatic stroke of the piston in the opposite direction. This solution reduces the burden on the user.
Installed inside the case hydraulic system. When the handle is moved up and down, a force of up to 150 kN is transmitted to the working piston (8). This is quite enough for quickly bending 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, but provide reliable fixation.
This removable segment (6) is designed to be bent at an angle of 90°. But with the appropriate configuration, it can be installed on a similar product of a different shape.
The robust housing (10) is mounted on three supports (7). Rubber pads prevent displacement when performing work actions.
In addition to cleaning from dirt, you should occasionally check the condition oil filter(eleven). No other regulatory procedures are needed.

This technique uses a workpiece the desired shape. The pipe is pressed against it using a rotating roller and lever.

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 you violate these instructions in finished products visible or hidden defects are formed.

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.

Making a pipe bender with your own hands for a profile pipe: drawings and other preparatory operations

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

To make such a structure you need a strong one. After marking it is cut out round profile. The remainder is used for making support element. The created parts are rigidly attached to the supporting surface. To ensure the strength of the connections, 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 a basic drawing with dimensions. A template made of thick paper or cardboard on which the markings will be applied will come in handy. It is clear that for the manufacture of more complex structures it is necessary to prepare complete design documentation.

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. You just need to indicate all the dimensions, decide on the materials, technological process and components. The project will help solve several practical problems:

During the preparation process, it will become clear whether it is necessary to use 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.
Some parts will be too difficult to make yourself. Appropriate orders should be placed in specialized workshops.

Important! Bending strong metal pipes requires a lot of force. In order not to take unnecessary risks, you can use drawings of a proven design, or copies of an industrial design.

Making a manual homemade pipe bender for a profile pipe with your own hands: video and detailed instructions

Here we talk about how to quickly create a pipe bender with your own hands for a profile pipe (video).

The master used available materials, a channel, and part of the drive from an old bicycle. But he had to create the connections himself to ensure the integrity of the heavy structure.

To find out how to make a pipe bender for a profile pipe with your own hands, the drawings and videos are supplemented with descriptions of work operations. Below are the algorithms for several assembly technologies.

Rolling pipe bender

Drawing	Actions
	To create a high-quality one, you can use this drawing as a sample. Here the workpiece is placed between three rollers. The extreme ones (2) – perform supporting functions. To install them at different distances (to obtain required angles bending) grooves are made in the support strips (1). The necessary pressure is created using a screw mechanism (6, 7). The force is transmitted through the central roller (4), which is rotated by the handle (5).
	The holes in the lower parts are created according to these dimensions. A channel with a wall thickness of 4 mm was selected for the workpiece.
	The upper part is created with cutouts. They must be made level so as not to interfere with the movement of the support screws.
	The thread is cut in accordance with this pattern.
	For the handle, you can choose a finished product, or use these sizes.
	Once assembled, you will get such a cute and functional product. There are no welded joints. But the components are difficult to make on your own without professional skills and specialized machines.

Hydraulic pipe bender

The screw mechanism performs its functions too slowly.

This design uses a standard jack. It is fixed rigidly to a bar, which is suspended on two springs. This solution simplifies manipulations with a heavy jack when installing workpieces and clamping segments.

The pipe rests on two round pins. They can be rearranged into other holes to create products with the desired radius of curvature. Parts of a durable steel frame (4-5 mm) are fastened with bolted and welded joints. The design turned out to be collapsible. If necessary, it is not difficult to dismantle it. The jack can be used for other operations.

Holes are created at the base of the frame. Through them the machine can be firmly attached to wooden floor nails, screws. This gives additional stability to the stationary structure. Its metal parts are degreased, coated and painted. Besides the good appearance provided good protection from destructive processes.

For your information! When creating a homemade pipe bender for a round pipe, rollers, stencils and segments with a different shape of contact surfaces are used. The technologies used are the same as for bending profile products. The above drawings with appropriate modifications will be useful.

Article

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.

One of the simplest types of pipe bender for profiled pipes

Serial devices differ in their operating principle; they may have different types drives, however, operating any of these devices requires some 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

The operating diagram of a pipe bender is very simple

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.

Very often, a machine for bending profile pipes is made with rollers made of wood or polyurethane. When choosing such materials, you should take into account the strength characteristics of the pipes that will be subject to bending. If this requirement is neglected, the working elements of the homemade device may simply not withstand the load and collapse.

Drawing of a pipe bender: the sectional view shows the mounting structure of the pressure roller

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 fracture and damage to the pipe.

To make a bend on a profile pipe using such a device, it must be inserted between the rollers of the pipe bender 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.

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 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.

Option with inverted jack

Pipe bender manufacturing process

To make a device for bending profile pipes, you must perform 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.

Drawings of a pipe bender for corrugated pipes

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 threading.
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.
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 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, you need 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 installation work:

the pressure shaft, fixed with keys, is additionally screwed to the shelf;
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;
The jack on such a homemade device is installed on a suspended platform, for which bolted connections and welding are used.

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.

Pipe bender for profile pipes in finished and painted form

Movable platform of the pressure shaft Installation of shafts Chain with tensioner Assembled view

To make your own hydraulic bending device for profile pipes, a photo of which can be easily found on the Internet, you must follow the following procedures.

Based on the drawing or photo, a structure for mounting the shoe and rollers, as well as the equipment frame, are made.
Attached to the lower platform metal plate on which the jack will be installed. After this, such a device is secured 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 grip the working part. If desired, rollers for the profile pipe, which are installed on the channel at the same height, can be made with your own hands. The shoe is installed below the rollers, and their relative position is determined by the required bending radius.
To fix the rollers and shoe, bolts are used, the holes for which are made according to the dimensions indicated in the drawing.

Drawing of another version of a pipe bender

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:

Another variation with a jack

Cold bending is the simplest bending method, which is used for pipes made from plastic materials. The subtlety of this process is to fill the pipe before the flexible pipe 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 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.

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 device for bending pipes.

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

The need for reliable and simple device for bending profile pipes occurs when House master begins to seriously study metal. Gazebo frame, carport, garden bench, Workbench…

These and many other designs turn out 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 a home workshop. Before the first workpiece is clamped in a vice, we invite you to get acquainted with the principle of operation and the existing varieties of homemade pipe benders.

How does a pipe bender work?

The operating principle 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 pointing machine is used.

If you need to get an arched profile, then use a rolling bending machine that combines metal bending with broaching.

Types 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);
electric (bending force is created by an electric motor);
electrohydraulic (the hydraulic cylinder is driven by an electric motor).

It should be noted that a rolling pipe bender with manual profile pulling is designed for small cross-section pipes (maximum 40x40 mm). It is impossible to stretch a large profile manually. To bend it, 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 for a homemade pipe bender is maximum simplicity of design and reliability.

A machine for point bending can be assembled from two pieces of channel, four corners and two trimmings of fingers from tractor tracks.

Pipe bending 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. You can order it from a turner or make it 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.

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

The manual machine for bending profile pipes is brought into working position very simply:

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

It is also quite possible to build a rolling manual pipe bender for a profile pipe on your own. To make it you will need 2 linear meters channel (wall height 15-20 cm), from which the base and racks are cut.

To make the rollers, take six short pieces of steel pipe. It will act as a cage for bearings. Therefore her inner diameter must be equal outer diameter bearing Having ordered three shafts from the turner for attaching the bending rollers, they begin welding the frame.

For the machine under consideration, the role of a guide setting the angle of bending of the profile is played by the rightmost support. It is mounted on a channel, pivotally connected to the main frame using conventional door hinges. The jack's working rod rests against the turntable and lifts it.

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

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

Instead of a hydraulic jack, you can use a screw automobile jack to lift the end drum.

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 bending machine with your own hands

When arranging a site or preparing for the dacha season, the need arises for arches made of profile pipes. They are needed when constructing a greenhouse, assembling a gazebo or canopy. It is expensive to buy already bent arches - the price is twice as high as for the same flat rolled products. The solution is to do it yourself, and to make the process easier (it’s very difficult to do by hand) you need to make a pipe bender for the profile pipe. You will need channels or corners, rolling rollers and some other details. Among the tools - a grinder with a metal disc, welding machine ah, ruler.

Profile bender design

The machine for bending profile pipes 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 usually required is large. Therefore, the design contains three rollers. Two of them are installed permanently, one remains movable. Using a movable roller, the radius of curvature changes. In general, there are two types of pipe benders for profile pipes: with a middle movable roller and with an outer one (right or left - as desired).

You can make a pipe bender for a profile pipe in different sizes with your own hands

Pipe bender with middle movable roller

The two outermost rollers are fixedly mounted on the body. They are raised above the plane of the base. For the middle roller, a special U-shaped frame is welded. A long, large-diameter clamping screw is installed in the middle of its jumper. A third bead 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.

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

A cloud is welded to one of the stationary rollers, with the help of which the pipe is rolled through the machine. To make it possible to apply less effort for rolling, two stationary rollers are connected using a chain. To effectively transmit torque, sprockets are welded to the rollers (possibly from a bicycle), and a chain is selected for them. Such simplest 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 using powerful metal hinges.

Drawing of a bending machine for profile pipes 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.

Pipe bender for profile pipe with lifting platform

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 required force, you can also weld the sprocket to two fixed rollers and transmit torque using a chain.

What materials and design details are needed?

The base of the pipe bender is made from a channel or two welded angles. The thickness of the shelves is at least 3 mm; select the width of the shelves and the back of the channel to match the existing 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 heavy base using large diameter self-tapping screws. Fixation is necessary, since when bending pipes with a thick wall, significant forces have to be applied and it is more convenient to work if the machine is firmly fixed.

This is what the frame looks like with welded racks for attaching the movable roller

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

It should also be said about the shape of the rollers. They should not be smooth - there should be rollers along the edges that will prevent the pipe from “walking” during rolling. Only under such conditions will the arc from the profile pipe be smooth and not twisted. Ideally, each pipe size needs its own rollers. But then the design becomes more complicated - they need to be made removable, thought out reliable way fastenings The second option is to make videos of complex shapes, such as in the photo. Carve a few steps under different sizes pipes

Rollers for bending profile pipes of different widths

The same photo shows that top part the bed is uneven, but toothed. With the help of such teeth, the rollers can be rearranged to different distances and thus also adjust the bending radius.

In general, homemade bending machines for profile pipes are assembled from what is at hand or what they can find/buy inexpensively. Those who have the opportunity grind out the rollers and insert bearings. Those who do not have such an opportunity use what they have - even bushings from bicycle wheels. In general, you need to understand the design and

Tricks to make pipe bending easier

To make the rollers move better, bearings are used. 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 that is slightly larger in size than the axis on which the roller will be mounted. Pass the axle with the roller on through the holes of the holders and fix them somehow (at least weld on a couple of points that will be stoppers). During operation, for better performance, lubricate the rubbing areas with a thick lubricant such as Litol. This is not suitable for industrial and semi-industrial production, but for making arcs for a greenhouse or gazebo with your own hands it is just right.

Example of turned beads

There is one more trick that helps reduce the required force when bending a profile pipe. You can use the principle of increasing gears as in a bicycle. By the way, you can use bicycle sprockets. In this case, the handle that drives the rollers is welded to a small star. It is installed somewhere on the body. Larger sprockets are welded onto the shaft axis (but 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 - if you constantly use a pipe bender for a profile pipe, it makes sense to mechanize it. In this case, they install a motor that operates at low speeds.

The procedure for bending a profile pipe on homemade machines

It is unlikely that you will be able to obtain the required bending radius in one go - too much force is required for this. It is impossible to create it manually. Receive the required bend in several passes:

First, the rollers are aligned so as to obtain a slight bend, the pipe is rolled in one direction, then removed from the rolls, unfolded and inserted on the other side. It is necessary to unfold in order to obtain 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 achieved, change the position of the roller and repeat the steps again.

Rolling pipe bender with electric drive

The change in bending radius is achieved gradually, otherwise you will not be able to make an arc from a profile pipe using a homemade pipe bender. What to do 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, will be insignificant.

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

How to bend a profile pipe without a machine

There are two ways to make 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 every 15-30 cm, depending on the required radius, cross-section and wall thickness. The cuts should not touch one side - the one that will be on the outside.

Result of bending by welding

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 welding is carried out along all the cuts, welding them. AND final stage- grinding of welding points and treatment with anti-corrosion compounds.

Using a template

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

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

The holes are repeated at one end of the pipe; 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 follows the shape. You need to pull smoothly, without jerking.

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

Pattern on the ground

Having inserted the pipe, it is pulled towards the arc. It takes a lot of effort and the work is hard. This can only be achieved with a thin-walled, seamless pipe. The suture has too much resistance in the seam area. It is very difficult to overcome it manually.

Do-it-yourself pipe bender for a profile pipe

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

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

If you like creating unique building structures, engineering structures, a good home workshop equipment will come in handy. When selecting specific types of equipment, you need 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. Using 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

What are these devices for?

Elements building structures complex shapes 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, resulting in additional loads.
Welding produces excessive heat, which disrupts the original structure of materials. To make the connection reliable and durable, a well-qualified contractor is required. Special equipment consumes a lot of electricity. Some technological processes use expensive Consumables, create special conditions.
Adhesive joints have limited resistance to loads and impacts of various natures.

The disadvantages listed above are eliminated completely or partially if the workpiece is bent in the required way. To avoid damage, precise 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 and machines are used.

What engineering solutions will be used in practice?

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

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

Crossbow type machine

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

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 housing. When the handle is moved up and down, a force of up to 150 kN is transmitted to the working piston (8). This is quite enough for quickly bending 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 reliable fixation.
This removable segment (6) is designed to be bent at an angle of 90°. But with the appropriate configuration, it can be installed 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 when performing work operations.
In addition to cleaning from dirt, you should occasionally check the condition of the oil filter (11). No other regulatory procedures are needed.

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

Run-in

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

With the right choice of technology, a straight pipe can be bent in the following way
Using appropriate equipment, such decorative products are created

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 will form 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 and electric drives.

Stationary machine useful for quickly completing large-scale tasks
A hand-held device means mobility and the ability to perform work in confined spaces

Making a pipe bender with your own hands for a profile pipe: drawings and other preparatory operations

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

Such a device is not difficult to assemble quickly using available tools

To make such a structure you need a strong board. After marking it is cut out electric jigsaw round profile. The remaining part is used to make the supporting element. The created parts are rigidly attached to the supporting surface. To ensure the strength of the connections, in addition to screws, clamps are used. Next, the pipe is bent by hand until the desired shape is formed.

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

During the preparation process, 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 by impregnating wood and painting metals.
Some parts will be too difficult to make yourself. Appropriate orders should be placed in specialized workshops.

Important! Bending strong metal pipes requires a lot of force. 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. Using these materials, it is not difficult to implement the corresponding project.

A pipe bender for a profile pipe is a tool needed for certain situations, and there is a steady demand for it in the market. The pipe bender can be used in the most different areas, where there is a need to give the pipe a specific shape. Of course, such a tool can be purchased, but if you want to save money, you can make it yourself.

To assemble a pipe bender, you need knowledge about its structure, operating principle and characteristic features. This work will also require the appropriate tools and instructions. How to make a pipe bender for a professional pipe with your own hands will be discussed in this article.

Main characteristics of a pipe bender

Structurally, a profile pipe bender is a specific machine for rolling profile pipes, which allows bending pipes with various profile cross-sections.

Good pipe benders for profile pipes allow you to solve several problems, including:

The ability to bend the pipe at the required angle, the value of which can reach 180 degrees;
Ability to work with pipes in a fairly wide range of diameters - from 5 to 1220 mm;
Possibility of processing pipes made of different materials (if necessary, you can bend both metal and plastic products).

Basically, the need for a pipe bender to process polymer pipes is absent - such material can be bent in other ways. But when processing metal products you cannot do without professional equipment.

Of course, you can always purchase a ready-made tool or rent it, but these solutions cannot be called the best. Renting specialized equipment is usually expensive, and purchasing it is even more expensive. In addition, you need to understand that buying a pipe bender for a one-time job will not be the most profitable option. To avoid extra costs, many people make pipe bending machines with their own hands.

Application of pipe benders

However, the main scope of application of such equipment is the laying of various pipelines and installation of buildings, in which profile pipes are often used as fittings. Regardless of the shape and type of raw material used to produce pipes, they can still only be bent using special machines - otherwise positive result will not be possible to achieve.

The scope of application greatly influences the bending parameters of pipes. The fact is that the material can have different sizes and raw materials, and the requirements for bending are different. To process pipes properly, you need to use equipment of the appropriate power and capabilities. In addition, an important aspect is the drive of the device, which can be manual, electric or hydraulic.

Types of pipe benders for profile pipes

The main factor by which pipe benders are classified is the device drive, depending on which three categories of devices are distinguished:

Hydraulic.
Electrical.
Manual.

There are many differences between these devices - different configurations, operating principles and equipment costs. It is worth considering them in more detail to understand these differences.

Electrically driven devices are among the most expensive, but the high cost is fully justified (more details: ""). The technical characteristics of such devices, including high power, precise adjustment of the pipe bending angle and convenient control, are at the highest level. As a rule, professional installers use this tool.

Hydraulic pipe benders, although somewhat inferior in cost to electrical devices, also cannot be classified as budget ones. Such devices are usually used in situations where the power of a manual pipe bender is not enough.

Hydraulic devices have many advantages:

High pace of work. Thanks to its high and stable power, a hydraulic pipe bender is able to process pipes much faster than manual devices.
High processing precision. Unlike manual devices, hydraulic devices allow you to bend the pipe with an accuracy of 1 degree.
Ease of operation and maintenance. This type of device is very easy to use and does not require special maintenance. Even if the device fails, you can repair it yourself. In addition, the work will not require a lot of effort, which is simply necessary when processing with manual pipe benders.
Light weight and compact. If necessary, any hydraulic pipe bender can be moved from place to place without much difficulty.
Versatility. Unlike hand-held devices Having a number of unpleasant limitations, hydraulic pipe benders allow you to work even with steel products of medium diameter.

In addition to the types of pipe benders already described above, there are also manual devices that are characterized by the lowest cost and simplicity of design. A manually operated pipe bender for profile pipes is quite mobile and easy to use. It is also worth noting that if they want to make a pipe bender with their own hands, most users choose this option.

However, you have to pay for the low cost with other qualities. Firstly, manual devices are poorly suited for large volumes of work due to the difficulty of using the device for a long time. Secondly, the principle of operation of such devices is simple, but it is difficult to work with them - you have to put in too much effort to bend the pipe well. Thirdly, manual pipe benders are only suitable for processing plastic and aluminum pipes. If you really want to, you can also process steel products, but only if their diameter is small.

In addition to classification by type of drive, pipe benders are divided according to the method of bending the pipe, depending on which three types of devices are distinguished:

Crossbow, in which the pipe is bent due to a special shape;
Spring manual, bending the pipe due to the force generated by the springs;
Segmental, having a structure made of dense material with installed mandrels, around which the pipe is bent.

DIY manual pipe bender

Many owners are concerned about the question of how to make a manual pipe bender for a profile pipe with their own hands. This question is quite relevant - purchasing ready-made tools is expensive, and the quality of some of them leaves much to be desired. It is not surprising that various pipe bender designs are proving popular and in demand.

To create a simple manual pipe bender you only need three components:

Concrete slab;
Several metal pins;
Hammer.

Assembling all the parts into one whole is not particularly difficult. First you need to divide the slab into squares with a side of 4 cm or 5 cm. When these squares are marked, they are drilled in their corners using a hammer drill deep holes, into which the pins are then installed. It is best to have drawings of homemade pipe benders for profile pipes with you so that you can constantly refer to them.

The operating principle of this primitive design is quite simple: the pipe is placed in the space between the pins and bends due to physical effort. Such a manual bending machine for a profile pipe is not very convenient to use and does not allow achieving high precision bending angle, but for a small amount of work in living conditions his abilities are enough.

Alternative designs for manual pipe benders

The simple pipe bender described above is not suitable for all situations. If you need higher performance, you will have to look for more complex design. Enough effective option A homemade pipe bender is a design whose main working element is a jack. To assemble manual pipe benders for a profile pipe with your own hands, you will need a hydraulic jack that can withstand a load of up to 5 tons, a strong base and pins.

There is one more interesting option– a pipe bender with a chain drive, which is started using a handle. The drawing of a pipe bender of this type includes a metal base in the shape of the letter P, a clamp, three rollers, a winch and a chain. The parts are connected by welding.

The assembly algorithm for such a tool is as follows:

First of all, a U-shaped part is attached to the base;
Two rollers are attached to both sides of the part, and the third is installed so that they all form an isosceles triangle;
A chain with a connected winch is wound onto the rollers.

Homemade hydraulic pipe bender

Hydraulic pipe benders have many advantages over with hand tools, but all of them are determined by the complexity of the design. Because the hydraulic equipment is complicated, then assembling it yourself will be much more hassle. To assemble such a pipe bender, you will need a solid base, a U-shaped metal piece, a shaft, a pulley, a chain and a hydraulic rod.

Making a homemade hydraulic pipe bender looks like this:

The first step is to install the shaft on the base;
A pulley is attached to one end of the shaft, and a chain is attached to the second, after which the next shaft can be installed and connected to the first by a chain;
In the lower part of the structure you need to cut an opening for the movement of the rod;
Next, the third roller is installed, which is the main element that bends the pipes;
The third roller shaft is installed in the grooves of the base.

Homemade rolling machine for bending pipes

The set of materials required for work looks like this:

Concrete base;
Wheels;
Winch;
Engine;
Metal jumper;
Jack;
Gearbox.

It is best to assemble a pipe bender for a profile with your own hands in several stages to simplify the work:

The first step is to prepare the base. It will require metal elements and a welding machine. Four supports are attached to the base, after which holes can be drilled in the structure, allowing you to adjust the bending radius of the profile pipe.
Next, a jack is installed using bolts and plastic, after which you can attach a winch with rollers, both engines and a jumper.
The last step is the installation of the “fungus”, which is essentially ordinary pipe, curved at a right angle. The “mushroom” is attached to the upper part of the machine body.

A pipe bending machine for a profile pipe assembled according to this scheme has a complex design, but the difficulties of assembly in the future will more than pay off due to efficient and simple operation.

Conclusion

There are the most different variants pipe benders for profile pipes. If we are talking about purchasing such a device, then everything depends on the choice of the necessary technical characteristics, and when self-assembly It will also require a lot of effort aimed at creating the most efficient and reliable design.

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