Manual pipe bender is a special mechanism or design that allows to bend pipes of different diameter at any angle. It can be bought, rented, or bend the pipes themselves. However, if the farm constantly has the need to bend pipes, strips of iron, then you can make a manual pipe bender with your own hands. It will relieve from many troubles and monetary expenses. The need for such a tool may arise at the dacha or in the countryside. This may be a greenhouse, greenhouse, some elements of buildings or landscape. He will also help a lot if the heating system or irrigation is done manually.
The pipe bender is a device for bending pipes, an indispensable thing in the construction of the pipeline with their own hands.
Pipe benders are divided by type of work. They can be segmental, crossbow, spring or mandrel. They are multi-drive: electromechanical, hydraulic and manual. About the latter and will go on.
Of course, for proper operation and product quality, you need to know a bunch of small things and tricks of the process. For example, by measuring the diameter of the bend pipe, you can determine the maximum bend angle. If the product is pinched, the pipe will not be held for a long time - it will burst.
|Pipe bend radius depending on diameter and wall thickness|
|Diameter d||Smallest bend radius / wall thickness|
|Up to 2 mm||Over 2 mm|
|5 - 20||4d||3d|
|20 - 35||5d||3d|
|35 - 35||-// -||4d|
|60 - 140||-// -||5d|
Drawing pipe bender for pipes with a diameter of 10-16 mm.
Accordingly, it makes it clear what degree you can bend the pipe. Further bending, of course, is quite possible, however, it will lead to a quick bend breakage.
Types of various pipe benders countless. And everyone has their own disadvantages in relation to others. Fantasy craftsmen helped create and compact, and quite productive machines. From the simplest to the incredibly complex and powerful. From thin rods to thick pipes to the factory.
The simplest pipe bender is designed more for thin aluminum pipes with a diameter of just over an inch. It will require:
- The board is pine.
- Electric fretsaw
- The basis on which the device will be located.
- Fiberboard sheet.
- Clamp manual wooden.
- Screwdriver for screws.
Scheme manual lever pipe bender.
The board is taken 0.5 cm thicker than the tube. Jigsaw cut the desired bending pattern. It is possible to use more than one board. The shape of the template is cut fiberboard and superimposed on top. Screws tightly screwed into the tree. The size of the screw must exceed the thickness of the board and fiberboard by a couple of centimeters. On one side of the manual pipe bender a board is screwed for pipe stop. The product is ready. A pipe is placed between the template and the support and slowly, in soft jerks, bends to the end of the stencil. If the pipe is larger or the diameter is larger, a similar template should be made, only larger.
For another type of benders you will need:
- A large sheet of plywood.
- Stainless steel hooks.
- Board for the rest.
Such a machine is designed for long but soft pipes. Plywood draws a circle or arc with the required diameter. On it in the upper part are attached hooks. They should lie perfectly flat. Shifting the hook may result in improper bending. Between hooks, the distance should be no more than 5-10 cm. A board is screwed on the side. It should be thicker than the diameter of the pipe. Is done. Use on the same principle as the previous bender.
However, soft tubes are not always suitable in everyday life. Most often we need steel, which can not bend manually. In this case, help winch. For a more powerful machine, you will need:
The name of details and the sizes of the pipe bender.
- Thick sheet chipboard.
- Hand winch.
- Electric fretsaw
- Clamp height chipboard.
From a chipboard sheet with a jigsaw, cut an arc of the required diameter for bending pipes. The rest is not necessary to cut. A plate is fastened to the wooden base (wall) with self-tapping screws. On it from the side and in several places along the arc of the screws are placed pieces of boards. To fasten the pipe from the bottom of the chipboard, a narrow, sturdy board is nailed or screwed along the edge. Below put the simplest winch.
During operation, one end of the pipe is clamped with clamps at one end, and at the other end a hook of a manual winch clings. Slow movements smoothly bend the pipe. This machine can bend not only steel pipes, but also profile ones.Back to table of contents
Prototypes brand benders a little more complicated. They have a lot of details that need to be cooked. With one small mistake all the work can go in vain. However, it is still possible to make a manual pipe bender with your own hands. This will require:
Types of bends and types of pipe bending on manual pipe bender.
- Steel or duralumin sheets.
- Product drawing.
- Double-sided tape.
- Electric jigsaw with a blade of metal.
- Drill with drills.
- Rollers, preferably with bearings.
- Bolts with washers.
- Washer thickness slightly more rollers.
- Welded machine.
- Small plates of metal.
- Iron base.
Practical recommendations for the manufacture of pipe benders
In the case of a small metal thickness, you can weld on the back side of the corners or iron bars. The drawing has the shape of a trapezoid with cut bottom corners. It is printed in full size. And double-sided tape attached to the metal. Electric jigsaw cut blanks on a template drawing. For simplicity, two sheets should be taped together and both cut at the same time. Also, in two sheets, it is worth drilling and openings. Since the third hole is oblong, then it will be harder to drill. Making two on the sides and dividing the partition with a jigsaw - it will be the easiest way.
Further, the blanks are opened, the rollers are bolted to them.
Between workpieces and rollers put washers for high-quality mounting.
Drawing of rollers for the pipe bender.
The second workpiece is attached to the rollers and is well tightened. The pipe bender is placed on the wide end part with its own hands and is welded to the base - steel sheet. A washer is welded to the opposite side. Next you need a strip of metal with a thickness of about 3 mm. It must be cut into three parts. Two of them should start at the top hole of the bender and end about a couple of centimeters above the entire structure. The third segment is the top bar of the resulting U-shaped part. That is, its length is equal to the thickness of the pipe bender itself, plus two side plates.
All three need to be welded in the form of a letter P. After drilling three holes at the ends of long strips, and at the third inner, thicker, diameter bolts welded to the machine. The part is attached to the upper bolts of the rollers with screws, which have the name "lamb". It is necessary to weld the lever in the form of a steel rod to the clamp bolt. The rod should rest comfortably in your hand. After that, the bolt is screwed into the upper P-part. You can fix the finished pipe bender with the help of the corners or clamps to the desktop. Also, if necessary, weld the handle. It will be necessary if the pipe is steel, profiled. You can work with soft pipes.
In the manufacture of roller manual pipe bender it must be remembered that the bending radius depends on the distance between the rollers. The larger it is, the smaller the radius. And also less effort will have to be applied. The required diameter should be calculated in the manufacture of the drawing. You can make a few extra rollers for larger size.