Profile pipe is an element of many building structures and frames. Used in the construction of industrial and residential buildings. The main characteristic that distinguishes it from other types of pipes is the non-round shape of the cut. A profile pipe is produced from a sheet, welded and bent lengthwise in the desired shape. If necessary, rollers can be manufactured for profile pipe do it yourself - you will find drawings and explanations in this article.

Manufacturing of profile pipes using the rolling method

Assortment of profile pipes

In the factory, two methods are used for the production of profile pipes from metal sheet:

• hot method, at which the straight-seam round pipe heats up;
• cold method, in which rollers for a profile pipe are rolled over unheated metal.

The basis for production is carbon, low-alloy, less often stainless steel. Modern factory equipment will allow you to obtain a profile with high accuracy seams and bends, since the process is controlled by transmitting data from a computer and receiving it from sensors that take readings with an accuracy of thousandths of a millimeter. Homemade rollers for profile pipes cannot provide such detail, but they cope with the task of producing elements for home construction and household work. This technique is used to produce consumable elements for fences and canopies, greenhouses and technical buildings, gutters and cable ducts. It is not recommended to make a profile pipe for large-scale buildings at home. Factory equipment makes it possible to subject each manufactured element to test tests and check both the quality of the seam and the accuracy of profile calibration. The absence of such equipment does not give the master the opportunity to guarantee the quality of a homemade product.

Assembly of a machine for profile production

Application of curved profile pipes

A do-it-yourself rolling machine for a profile pipe looks similar to a design for bending pipes. It consists of the following elements:

• supporting frame;
• roller system;
• pressing mold:
• stop and levers for activating the rolling mechanism.

In fact, these are two different mechanisms and only the frame can be similar. All structural elements are assembled from durable elements and welded: any defects and negligence can result in work injury. The machine itself is firmly fixed to the surface.

It is almost impossible to provide the required pressure manually: it is advisable to equip the press for creating a profile pipe with an electric drive.

In a machine for giving a profile a rounded shape, the main thing is a press that twists a sheet of metal. Only a solid structure can provide such pressure: the pipe must be kept motionless throughout the entire welding period. To simplify the work, the metal is heated and then rolled. After welding, the round pipe is checked for the quality of the connection: a seam that is not sufficiently smooth and clean will separate when the rolling of the profile pipe from a round shape to a rectangular or square one begins.

Workpiece processing process

The finished straight-seam pipe is rolled hot or cold. At home, it is difficult to organize hot rolling, so the process is often carried out on already cooled metal.

The pipe is placed under a press of rollers, forming the required shape.

Rolling is carried out gradually with a decrease in the distance between the upper and lower rollers. Sudden pressure will cause internal folds in the metal, which will affect the strength of the knees. The last rolling reaches the planned diameter and cut contour.

The pipe is checked for cracks and metal deformation in the bend area after each rolling. Zone special attention– the seam area, it is the most vulnerable.

After processing with rollers, the pipe is calcined: this measure eliminates the stress of the metal layers and increases the strength of the structure as a whole.

Bending of profile pipes

Craftsmen rarely decide to make a profile pipe on their own, preferring to purchase ready-made factory-produced material. The profile pipe is an inexpensive consumable element, so bending is necessary with my own hands No. A machine for bending profile pipes with your own hands is a more popular equipment, since the element is sold directly, and ordering bending according to your own drawings is an expensive service. A curved or rounded profile is used for construction and the construction of decorative elements as it is more aesthetically pleasing. Frames and cornices, greenhouse arches and gate arches can be made with your own hands. The simplest rollers for bending a profile pipe are assembled in a few hours. They will not provide industrial volumes and accuracy, but they will reduce the costs of producing individual elements.

Bending quality requirements

The simplest way to bend profile pipes is with heat and pressure. In this way, you can even create an acute angle, but you should not count on the accuracy and strength of the knot. Folds on inner surface knees and cracks on the outside are guaranteed. Bending without defects is achieved only by gradually rolling the pipe on rollers and calculating the minimum diameter. The maximum bend angle is not standardized, the minimum is limited by safety requirements. A standard factory machine for bending a profile pipe sets the minimum diameters of a round bend, and you can use these same indicators when creating homemade machine:

• pipes 20x20x2, 25x25x2, 15x15x1.5 - 56 cm;
• pipes 30x30x2 – 65 cm
• pipes 40x20x2 - 65 cm;
• pipes 40x40x2 – 180 cm;
• pipes 50x25x2 - 80 cm.

Machine drawings for home use

The simplest deformable structure can be assembled directly in the yard or technical room, securing all the elements to a dense shield or directly to the fence. Elementary models will help out if you need to bend several pipes into a single shape, for example, to install the upper arches of a greenhouse. Regardless of the selected bend diameter and the size of the pipe itself, you will need:

1. A frame that follows the contour of the required arch. It is cut from a single piece of wood or assembled from a series of planks. The pipe will bend according to this stencil.
2. Support on one side of the frame. The gap between the stop and the stencil is made corresponding to the diameter of the pipe being processed. A smaller one will make it difficult to install the element into the device, a larger one will not secure the knee firmly.
3. A block with which the pipe is manually pressed against the template.

Working with such a pipe bender is difficult: all efforts will have to be done manually. But the design will ensure accuracy when bending: you can make several elements with an identical angle of deformation on it.

The pipe bender for permanent use is assembled on a durable U-shaped frame. The following elements are required in his system:

• two rotating shafts mounted on a rail, along which the profile will pass during rolling;
• an extrusion shaft located above them, which presses the profile during rolling;
• a clamp or jack that provides pressure;
• a chain with which the set of rollers will move.

To assemble rollers for a profile pipe with your own hands, you will need welding machine and engineering skills. Inaccuracies in calculating the diameter of the functional shafts will make the device inoperable.

Video: working with a manual profile bender

Assembling a bending device with your own hands is a complex, time-consuming and expensive process. Against the background of moderate prices for equipment, it is worth thinking about the rationality of the purchase. Perhaps, to bend several elements, it is more profitable to contact a workshop, but for permanent job purchase a factory model with a quality guarantee.

It is quite common to bend metal pipes at the desired angle or along a given contour, preferably without loss of strength properties and internal working sections. In pipeline systems there is an excellent opportunity to do without unnecessary connecting parts; in structural structures made from profile pipes there is a certain freedom of design and design thought.

We specifically introduced this section to slightly cool the natural fervor of our fellow citizens to do everything with their own hands: a homemade mechanical or hydraulic pipe bender, rolls for it from random metal pipes ok, and damaged rolled metal is entertainment, of course, worthy for a real man, but it’s easier to look for ready-made profile products, which just need to be brought to condition.

For people who are far from such purely mundane topics, let us explain:

A pipe bender is a mechanical device that can bend pipes of any size and configuration. There are only three industrial versions of the drive type:

• manual: the simplest in principle of operation and the most complex in operation; the final deflection pattern of the pipe can be changed, but the physical effort to perform shaping work remains equally large;
• hydraulic: a version of a semi-professional pipe bender with rollers made of alloy steel, allowing you to roll pipe profiles up to 80 mm without losing the strength properties of the pipe, crushing and stretching the working section;
• electromechanical: industrial machine tool production, which produces most ready-made structures from rolled pipes.

The rollers of a pipe bender are simply two round shafts made of high-strength material, between which the material being processed (in our case, an ordinary steel pipe) is “rolled” and takes a given shape.

Make a pipe bender yourself or buy a ready-made one

The question is funny because it concerns two completely different areas: financial and psychological. For many of our compatriots, it is easier to buy a ready-made pipe bender, not to worry about calculating rollers and loads, but simply take the instructions and quickly bend all the pipes that are available on a suburban site.

The most important question that always arises when purchasing expensive equipment is price. For reference, let us inform you: a high-quality hydraulic pipe bender costs in the range of 22-35 thousand rubles. Perhaps your entire structure, built from bent profile pipes (shed, garage, summer cuisine) are priced cheaper. A manual pipe bending device with six bending profiles and a jack rod will cost 9,500-12,000 rubles.

Agree, if you do not plan to build up all your land with openwork greenhouses and gazebos of complex architectural forms, then such expenses for equipment are clearly unnecessary. Our natural intelligence begins to work and, as a result, the traditional Russian answer: we’ll do it ourselves.

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

We considered the entire range of profile steel pipes, their structural advantages and scope of application separately. Now we will try to bend them with our own hands along a given radius of the final product.

It is very important to avoid the following technical defects:

• cracking; such metallic profile will have to be thrown away;
• compression or tension of surfaces at points of potential load on a structural element;
• deformation of the original profile, leading to a violation of the resistance of the metal (corrosion and mechanical) in the bending and fracture units of the supporting structure.

If you are ready to make a unit and rollers for such work with your own hands, honor and praise to you. The simplest homemade pipe bender with electrically driven rolling rollers (any electric motor with a gearbox is suitable) and a clamping device made from ordinary steel pipe. It is mounted on a regular car jack and, judging by the reviews, produces high-quality arched products.

We appreciate the technical discoveries of our “Kulibins”, but we recommend buying ready-made rolled metal of any configuration or making it to order according to your drawings and ideas, without particularly straining your hands and head.

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 principles, they may have different types of drives, but 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 the drawings 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 we neglect this requirement, then the working elements homemade device They 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 kinking 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 such a bending mechanism, it is used chain drive. 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. 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 a 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:

• hydraulic 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 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.
• A metal plate is attached to the lower platform 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 from 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 of plastic materials. The subtlety of this process is to fill the pipe before the flexible one with sand, salt, oil or cold water. This allows you to get a better bend without significant deformation of the pipe.

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

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

Removable rollers of different 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 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 given 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 structures 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 vise, we suggest that you become familiar with the operating principle and existing varieties 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.

A pointing machine is used to bend the pipe in one local area.

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.

The frame of the 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.

IN working position manual machine for bending a profile pipe is given 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, its inner diameter must be equal to the outer diameter of the 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 ordinary door hinges. The jack's working rod rests against turntable and picks her up.

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 hydraulic jack To lift the outermost roller, you can use a car screw.

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 from a profile pipe. 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. Tools include a grinder with a metal disc, a welding machine, and a 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. This 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 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 complex shape, 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 somehow fix them (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 the last stage is grinding the weld spots and treating them with anti-corrosion compounds.

Using a template

Thin-walled profiled pipes can be bent by hand using templates. If you need any special shape, it can be cut from 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. Great efforts are required, 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 to create unique building structures and engineering structures, well-equipped home workshop 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.

Pipe bender with electric drive

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?

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, 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 and 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, use special devices, machines

Which engineering solutions put into 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

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.

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.
• Support rollers (3, 4) are installed in required holes frames open type(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 oil filter(eleven). 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.

At making the right choice technology, a straight pipe can be bent as follows
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.

A stationary machine is 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 tool for bending aluminum and plastic blanks 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 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 from thick paper, cardboard on which the markings will be applied. It is clear that to produce more complex structures it is necessary to prepare complete design documentation.

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

The advent of cellular polycarbonate for the manufacture of greenhouses determined a new type of structure for protected ground structures - arched structures. To create a metal frame for such buildings, you need to have a machine capable of bending structural profiles along a certain curve. Homemade rollers for profile pipes are designed to help in the manufacture of arches along a given radius.

The technological process of profiling long workpieces is based on pulling the part through rollers located at a certain distance from each other. To give a bend in one direction or another, the length of the length is not passed in a straight direction, one or two rollers are offset.

Pipe rolling machine

When rolling long pipes on a machine, the center of movement is shifted. Due to this displacement, a curve is formed between the rollers. One roller presses from the inside of the radial contour, and the other two form the external contour of the future product.

Drawing of a pipe bender for pulling profile pipes. All dimensions of parts required for manufacturing are indicated:

Structurally, such a device is made on a strong support made of channel. The lower rollers are located in bearings. Usually the distance between them does not change (there are versions of the machine where, by changing the location of the lower rollers, a different rolling radius is created).

The top roller is located on top. It can be moved in height. By moving the supporting part downward along the thread, significant forces can be developed. They will act on the pipe during the rolling process.

To perform rolling, additional pulling forces must be applied in the longitudinal direction. A handle is installed for this purpose. By rotating it, you can make the pipe move in one direction or another.

For self-production, you can go a different route. The walls of the device are cut out of a sheet 2...4 mm thick, where the rollers are installed.

Simplified pipe bender design:

The most difficult thing is to make the sidewalls, inside of which are located:

1. Support shafts – 2 pcs.
2. A pressure roller located on a suitable device.
3. A handle that allows you to roll a profile pipe.

Industrial machines are made with manual or electric drive. When manufacturing an electrified machine, the possibility of reverse must be provided. Then you can roll, forcing the length to move in both directions.

Making a pipe bender with your own hands

The simplest pipe bender is relatively easy to make. Need to purchase:

• bearings No. 206;
• bearing housings;
• shafts Ø 35 mm made of hardened steel HRC 40…45 (suitable for inner size bearings);
• bicycle sprockets of the same diameter;
• bicycle pedal;
• lead screw with nut;
• channel No. 8;
• channel No. 6;
• M8 bolts with nuts;
• strip 40 mm, thickness 4 mm.

To make it you need to use:

1. Electric drill.
2. File.
3. Angle grinder with cutting and cleaning discs.
4. Welding machine.
5. Set of wrenches.

Step-by-step manufacturing of the machine

Having prepared a set of components, we begin manufacturing.

General view of the machine. It is installed on timber 100·50 mm.

All details are displayed in a visible place. The performance of the bearings and lead screw is preliminarily checked.

Blanks are cut from channels. A vertical stand is welded from them, installed perpendicular to the supporting channel.

A hole is drilled for the lead screw. A nut is welded to it. Then screw in the screw. A cross member is welded on top; it will be needed to move the screw along the thread.

Bearings move along the support channel. They are pre-installed in the housings. Shafts are inserted inside. Chain sprockets are welded to one of the ends.

A bicycle pedal is welded to one support shaft. By rotating it in one direction or another, you can force the pipe to move in the desired direction.

Having manufactured the clamping mechanism, the location of all elements is checked. They try to install them according to the drawing presented earlier.

Having installed the parts in place, they are welded. Now it’s time to check the functionality of the device.

Place the pipe and roll it in both directions. There is no pressure from above yet; we are checking how easily the pipe moves.

By turning the screw, press the pressure roller down and push the pipe. By moving the pressure roller, roll the pipe. After each pass, move the roller down. Periodically remove the part and compare it with the template.

Having manufactured the machine, you can begin to manufacture greenhouses and greenhouses, which are based on profile pipes. Below are examples and information on how to make such structures.

Video: homemade pipe bender for a profile pipe.

Arches for greenhouses and greenhouses

Different types of greenhouses are used in the practice of gardeners

Greenhouse metal frame 3·4 m:

Most often, three-meter arcs are chosen. An entrance is created at the ends. Additionally, a window is installed that can be opened while leaving the door closed. Profile pipes of 20·20 and 25·25 mm are used.

Reinforced arc of an arched greenhouse:

IN winter period the load can reach over 200 kg/m². Therefore, a curved arc inside is welded to the outer contour. Additionally, radial connections are welded. Now a more rigid circuit is working that will withstand high loads.

Stationary greenhouse “Butterfly”:

Small designs greenhouses can be made stationary and portable. They are convenient because you don’t need to go inside to work with the plants being grown. It is enough to open the doors slightly to gain access. The greenhouses are called “Butterfly” because they open in both directions. From the end, the raised doors look like butterfly wings.

Greenhouse "Breadbox":

Portable “Breadbox” greenhouses are installed on the beds for the spring and autumn periods. In this design, the door opens in a similar way to how this issue is resolved in bread bins. It rises up and moves along the back wall. Such devices are in enviable demand among vegetable growers.

Greenhouse "Droplet":

The desire to reduce the snow load and create a durable metal frame is pushing designers to create teardrop-like greenhouses. The generatrices of the walls are built along complex curves. The top is pointed, the snow rolls down without stopping on the surface.

Joining semi-arches in the “Droplet” greenhouse:

Inside, the semi-arches are connected in the center of the frame. This solution facilitates the production and delivery of products to the gardener’s plot. All that remains is to make the halves and assemble them on site.

When constructing greenhouses, designers count on the length of rolled products, as well as polycarbonate rolls. The standard length of profile pipes is 6 m. They can be bent different ways. But the condition remains that there should be a distance of 3 m between the ends of the pipes.

Drawing of a radial arch for a greenhouse made of 20·20 mm profile pipe. Doorway:

The most common design is made along a radius of 1500 mm (outer profile). In it, a height of 2115 mm is reached in the center of the structure. Vertical sections are created on the sides of the generative arc; their length is 615 mm. Users will enter through a 780mm wide doorway. The opening height of 1830 mm is sufficient for the passage of people of average height.

Practice shows that such a greenhouse is in demand in most areas. There is enough space inside to accommodate beds and walkways.

Arch for a heifer 2800 mm wide:

Some people like to use a greenhouse that has a slightly smaller width (2800 mm). In it, the height in the central part is slightly higher, amounting to 2195 mm. Here the vertical sections along the edges have a height of 795 mm. The radius of the generatrix of the curve is 1400 mm (outer dimension).

The large height (2085 mm) and width (800 mm) of the doorway attracts attention. Even tall users will be able to walk inside freely without bending over when entering.

For a greenhouse 6 m long you need:

• 7 arcs, they are placed at a distance of 1 m from each other;
• for the manufacture of end elements, 33.3 m is required;
• longitudinal elements between the arcs will be a total of 42 m;
• To manufacture a metal frame, 20 profile pipes (6 m) will be required. The calculation was performed for a 20·20 mm profile pipe with a wall thickness of 1.5 mm. total weight is 99 kg.

Arch for a greenhouse type “Pavilion”:

When manufacturing a “Pavilion” type structure, a reinforced arc is created. The distance between the vertical supports will be 5400 mm. Profile pipes 40·60 mm (wall 2 mm) are used. Pipes of 40×40 mm are used as supports (larger sizes are possible when making carports).

Reinforcement is necessary so that such an arch can withstand a snow load in winter equal to 200...220 kg/m². They are placed at a distance of 1 m and covered cellular polycarbonate thickness 6...8 mm. For winter greenhouses use polycarbonate with a thickness of 10 mm.

Drawing of a small-sized greenhouse bread box:

Using a machine for rolling profile pipes, you can make for yourself and to order a wide variety of arcs for greenhouses and greenhouses.

Rollers for profile pipes are a tool that not everyone knows. What is it and what is it needed for?

A little about the profile pipe

Traditional round pipe products are more familiar to the average person. They are used for water supply systems, drainage systems, as cable sheaths and much more. The profile pipe has an unusual shape.

The profile of a pipe product can have different shapes, but the following types are the most popular:

• Oval. Products of this profile are found in radiator systems and as elements of decorative structures.
• Square or rectangle. This profile is used in the construction of load-bearing structures. This is explained by the high strength of the products under lateral load. A rectangular or square-shaped profile pipe can withstand the weight that a regular pipe bends without changing its shape.

Methods for installing load-bearing structures

When installing load-bearing structures, the joining of elements is carried out in two ways:

• By welding. The connection of elements by welding is strong and durable. This is especially important in places where there is a lot of pressure on the connection.
• With bolts. This connection is more profitable, since not everyone has a welding machine. Bolts can be used to connect elements of greenhouses, sheds and shelving.

Load-bearing parts on which a large load is planned are best made using I-beams or channels. These elements are not so beautiful, but have high strength compared to a profile pipe.

Creating curved surfaces

In load-bearing structures, the profile pipe plays the role of a horizontal, vertical or inclined support for balconies, ceilings or roofs. But for canopies, canopies or greenhouses it is necessary to create a curved surface.

This is explained by several reasons:

• Aesthetic perception. Round shapes have a calming effect on vision and the human psyche.
• Wind and precipitation. The streamlined shape does not serve as an obstacle to the wind, so during strong gusts the rounded surface poses virtually no threat. In addition, round shapes do not retain precipitation in the form of rain and snow.

To create a curved surface, you need to bend the material. This action can be performed by heating individual areas with a gas burner.

This is the simplest bending method, but it has some disadvantages:

• Firstly, its implementation requires a large lever, a strong stop of the tubular product and enormous physical effort.
• Secondly, it is impossible to achieve a uniform bend in this way.

You can create an even sector of a circle using rollers.

Types of rollers

To produce a profile pipe and bend it at home and in a factory, completely different tools are required.

Factory production

Rolling– this is the main technological operation in the process of manufacturing profiled pipe products.

The whole cycle looks like this:

• Flat blanks are rolled into a cylinder, and the joint is welded.
• The resulting product is rolled through rollers, where the desired profile is formed under high pressure.
• The quality of the seams is checked.
• Products are calcined to remove residual stresses from deformation.

To produce large volumes, factories use appropriate equipment. For example, in a full-fledged rolling mill of a large enterprise, the rollers for a pipe bender weigh several tens of tons, and the force applied to them can reach several hundred tons. However, it is not used here manual drive, and electrically driven equipment.

Home production

Self-made rollers for a pipe bender must meet completely different requirements:

• Ease. The equipment should move without much effort.
• Compactness. In a small room, the large dimensions of the machine will only complicate the work process.
• Economical. Powerful electric motors can be used to quickly roll workpieces. However, such electricity consumption requires high costs to pay for it. In addition, to operate such equipment, it is necessary to have appropriate wiring that can withstand high power.

At home, two types of rollers are used: electrically driven (with motors up to 1.5 kW) and manual.

Manual rollers for profile pipes are the simplest option. This device consists of three steel rollers, two of which are located on the same horizontal line, and the third roller is lowered between them like a clamp using a screw mechanism. A handle is attached to one of the rollers, lying on the same line, which sets it in motion. The principle of operation of such a mechanism is as simple as its design: a profile pipe is laid on two rollers, it is pressed on top by a third roller, which bends the pipe under pressure. By rotating the handle on one of the rollers, the pipe is rolled through the rollers. The result is an even bend along the entire length.

If you make transverse grooves on homemade rollers for a profile pipe, then you can bend a round, non-profiled pipe.

Do-it-yourself rollers for profile pipes can be used for the manufacture of elements of greenhouses and canopies in a small volume. This device is not suitable for producing a large number of structures.

It is much easier to bend a profile pipe on electrically driven rollers. The pulling and deformation of the pipe is carried out by a simple mechanism consisting of a low-power electric motor and a gearbox. Large coefficient transmission on the gearbox ensures the operation of the mechanism with a low-power motor.

Using various drawings of rollers for a profile pipe, you don’t have to look for suitable equipment, but make it yourself.