Method and device for forming a transverse collar on the end of

Details Method and device for forming a transverse collar on the end of Method and device for forming a transverse collar on the end of

1988-02-19

1990-03-06

Larson, Lowell A.

Metal deforming

By use of tool acting during relative rotation between tool...

Tool orbiting or rotating about an axis

72125, 72126, B21D 1904

Patent

active

049054929

ABSTRACT:
A method and device are disclosed for forming the end of a metal pipe into a collar substantially perpendicular to the longitudinal axis of the pipe. The method involves spreading the pipe end into a position perpendicular to the longitudinal direction of the pipe in two or more stages. The device includes an auxiliary head of conic form for spreading the pipe end into a collar substantially perpendicular to the longitudinal axis of the pipe, the auxiliary head being mounted in the device after the pipe end has been spread in a first stage to an angle differing from 0.degree. relative to the longitudinal direction of the pipe. The auxiliary head is so arranged that the working surface of the auxiliary head, when pressed against the pipe end, is substantially perpendicular to the longitudinal direction of the pipe.

REFERENCES:
patent: 1765704 (1930-06-01), Schultis
patent: 2004313 (1935-06-01), Crockett
patent: 2124743 (1938-07-01), McMahon
patent: 2370089 (1945-02-01), Swyers
patent: 3477265 (1969-11-01), Szitar, Jr.

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