Method of forming grooves on metal pipe and groove-forming appar

Details Method of forming grooves on metal pipe and groove-forming appar Method of forming grooves on metal pipe and groove-forming appar

1996-12-20

1998-03-17

Larson, Lowell A.

Metal deforming

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

During rotation of work

72118, 72121, B21D 1506

Patent

active

057274118

ABSTRACT:
Each of specific rollers which corresponds to one of the grooves is disposed in a circumference of the metal pipe at equal intervals and is pressed against the periphery of the metal pipe 10, thereby forming a plurality of the grooves at the same time. Because each of the grooves is formed by a specific forming roller, a plurality of the grooves can be formed separately, and the material of the wall between the grooves is prevented from being drawn. Thus, the grooves can be formed into a desired shape.

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