The work of a handmade self-made pipe bender fascinates. With light movements of the hand, the rectilinear form turns into a curved pipe, which is necessary to create canopies or the base of the greenhouse covers. Apparent simplicity is deceptive. To make a homemade device you will have to carefully prepare: find the drawings, bending rollers, stops and straps.
Content
A strategically important element in the farm
Without exaggeration it can be seen that the profile pipe is an important element of the economy. The profile pipe is a kind of rolled steel, having a section of a square or a rectangle.
The technology for obtaining shaped rolled products is carried out by mechanical deformation of the metal preform in the calibration mill and subsequent welding of the joint. With the help of special cuts it is possible to obtain the required dimensions of the profile pipe (9-12 m). The obtained assortment of a profile pipe from steel of marks "St" corresponds to GOST 1050-88 and GOST 380-94.
Pipe profile of any size is an indispensable attribute in the farm. Stability to damage and reliability of the design allows the use of straight and round tubes.
However, in order to bend the pipe profile to the required shape, considerable effort is required. Without special equipment, namely a pipe bender for a pipe, this is indispensable. How to bend the profile pipe at home?
Special equipment - benders
industrial pipe benders
It is necessary to distinguish the following types of special mechanical equipment:
• Hand tools, hydraulic
• stationary bending machines
• Mobile pipe bending electrical devices.
Hand hydraulic devices are a monoblock hydraulic pump equipped with a piston automatic return. Designed for bending a profile pipe of steel or annealed copper with a diameter of 10 to 22 mm to a bend angle of 90 °.
Most models of hydraulic hand pipe benders are equipped with a ratchet and a sliding device that allows you to manually install the side supports in the working position. For convenience of work benders are equipped with shoes of the required diameter of the pipe for bending stability. The constructions are equipped with three-position bending frames.
Stationary pipe bending machines are used for serial industrial production. Powerful bending frames units, retractable rods and impressive sizes of fixing nuts can withstand the work process for a long time.
Of particular interest are mobile pipe bending devices. Compact and convenient device housings allow installing benders at repair sites or in buildings under construction. Convenience of transportation of the device for small volumes of work is the best variant of the offer to bend the profile pipe.
For example, to work with reinforcement, if it is necessary to quickly bend it, preference should be given to a portable electrical device. In this case, the device configured for a particular type of pipe will not require constant or additional stops and adjustments.
construction of the pipe
The overall design of the device depends on the variety. We will clarify that the mandatory elements are:
• Bending frame of closed or open type
• hydraulic cylinder (for hydraulic type)
• Top and bottom mounting plates
• Pipe stops
• Handle.
The mounting strips have a threaded part, using which the bar is pressed and fixed with a nut. The bending force is provided by a retractable rod and rollers. The bump stop is a trunnion, the stop of which is placed in the planing hole. Bending is provided by segments made of precision steel casting.
The advance of the bent pipe is ensured by the stream, which is the supported element of the device.
Recall that in manual pipe benders the drive can be hydraulic and mechanical, and for electric tools it is necessary to provide an electric drive.
Self-made pipe benders: we select the drawing and details for assembly
To bend a pipe it is not necessary to acquire complex and expensive pipe bending equipment. It is enough to assemble a pipe bender for a profile pipe with your own hands.
The pipes can be bent with the help of special tools:
• blank template
• assembling a simple roller bender of rolling type
• Collecting the pipe bender from the jack.
gneem pipe according to the template
The most primitive and primitive version of the self-made pipe bender is the bending of the pipe according to the template. The required template is prepared from boards, the thickness of which is greater than the radius of the pipes to be bent. The boards are sawed along the radius of the bend under a slope and fastened to the base. The retaining bar is placed to the left of the template.
One end of the pipe is inserted between the stop bar and the template. The end of the tube is slowly bent. The opposite end of the pipe should smoothly bend along the template, repeating the given radius bend. This type of pipe bend is designed for light materials - aluminum pipes of insignificant diameter.
roller bending machine
The simple tube bender is already a more solid design, created from a template and rollers.
In the design of the template and rollers are a kind of rolling mill in miniature. For high-quality bending, it is necessary that the rollers tightly press the pipe. Therefore, the rollers and the template are made of solid wood, and preferably made of metal.
You can pick up the finished carbide rollers, providing for the diameter of the circle groove for laying the pipe. The distance between the rollers must be calculated or selected. A specific length and minimum radius of the run is required to run the pipe. Therefore, at the design and assembly stage of the device, various operating positions of the pressure rollers must be provided.
It is recommended to use the finished drawing of the roller bend with the completion for own assembly materials. The structural features of the roll-type pipe bender are the choice of the correspondence between the pipe section and the roll profile. Otherwise, the cross-section of the profile pipe may deform.
And does the kind reader know, what is the driving force of the pipe-bending process? It is a roller system and an electric drive.
The rollers of the pipe bend are circular shafts of high-quality steel, through which the profile pipe is rolled.
And, finally, the peak of man-made creativity can be called a pipe bender equipped with an electric drive assembled from a bicycle chain. Simplicity of operation and qualitative connection of the elements of the system ensure reliability of rolling, which is performed for several cycles.
The electric bender is assembled in video.
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