Method and apparatus for pipe bending

Details Method and apparatus for pipe bending Method and apparatus for pipe bending

1976-11-11

1978-07-25

Combs, E. M.

Metal deforming

By deflecting successively-presented portions of work during...

With modification or control of temperature or work, tool or...

29157A, 72131, 72132, 72369, B21D 900

Patent

active

041021690

ABSTRACT:
The invention provides an improved method and apparatus for pipe bending. In the method a leading portion of a length of pipe is heated and bent around a mandrel into a pipe bend, whereafter it is hot calibrated or sized to finished dimensions and at the same time cut off and trimmed to size at both ends. In a machine for carrying out the method, there are a heating chamber and an interchangeable bending mandrel. At the end of the bending mandrel there is a horizontally functioning calibrating or sizing device. A severing device is both in front of and behind the calibrating device for cutting off and trimming the pipe bend, and the pipe bend is movable both longitudinally and/or transversely in the horizontal plane.

REFERENCES:
patent: 1675300 (1958-06-01), Dawson
patent: 2206519 (1940-07-01), Taylor
patent: 3041715 (1962-07-01), Norton
patent: 3172450 (1965-03-01), Hockman et al.
patent: 3677046 (1972-07-01), Carroll
patent: 3956916 (1976-05-01), Herkner et al.
patent: 4043167 (1977-08-01), Koser

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