Process for forming metal pipes to a desired shape

Details Process for forming metal pipes to a desired shape Process for forming metal pipes to a desired shape

1976-03-30

1977-07-19

Larson, Lowell A.

Metal deforming

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

During rotation of work

72 81, 72 83, B21B 1912

Patent

active

040360440

ABSTRACT:
A process for forming metal pipes to a desired shape comprising fitting a metal pipe onto a model having same profile as the one desired to form, fixing the pipe thereon, arranging a plurality of metal rollers at same distance and around the metal pipe in such a manner that these rollers are in contact with the pipe always keeping their centers on the circumference of a concentric circle irrespective of the change in their position during their forward and backward movement relative to the longitudinal center axis of the model and rotating the metal pipe integral with the model in the longitudinal direction while forcing the rollers to move forwards and backwards.

REFERENCES:
patent: 1499128 (1924-06-01), Shroyer
patent: 1684206 (1928-09-01), Smith
patent: 2330811 (1943-10-01), Darner et al.
patent: 3109400 (1963-11-01), Paulton
patent: 3477264 (1969-11-01), Sohlemann
patent: 3810375 (1974-05-01), Oehm

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