Bending pipes with a spring. Drawing, description

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Bending pipes with a spring. home workshop

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Before bending a steel pipe, it must be filled with calcined sand sifted through a fine mesh, and the ends must be plugged with wooden plugs.

In the karting circle of the Moscow Palace of Pioneers and Schoolchildren named after N.K. Krupskaya, the guys very often had to bend pipes for kart frames, and the rigmarole with sand did not suit them at all. "What if instead of sand inside the pipe, insert a spring?" - the guys once thought. We tried - it worked. Now bending tubes for go-kart frames is no problem at all.

With the help of a simple device on a lathe, a spiral spring is wound from OBC wire Ø 1,5-2 mm (depending on the diameter of the pipe). Its outer diameter should be such that it enters the pipe with some effort. The main property of the spring - to be very rigid in one direction and at the same time flexible in the other - is used to prevent unwanted deformations of the pipes.

Pipe bending with a spring

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