Method for locally deforming a round tube into a tube comprising

Details Method for locally deforming a round tube into a tube comprising Method for locally deforming a round tube into a tube comprising

1982-09-29

1985-04-30

Husar, Francis S.

Metal deforming

By three or more coacting relatively movable tools

Yieldable face portion or auxiliary tool on tool-couple element

138116, B21D 4100

Patent

active

045136017

ABSTRACT:
The forming punch (18) comprises two planar surfaces (20, 22) interconnected by an edge (23), two portions of a cylinder which passes through the edge (23) and a curved surface centered on this edge. This punch (18) is inserted in the tube to the point of the tube to be deformed and then the tube is compressed between a V-shaped groove (34) in a die (36) and a curved groove (40) in a compression member (38). The punch (18) is thereafter withdrawn from the tube by axially sliding the punch out of the latter.

REFERENCES:
patent: 1983584 (1934-12-01), Urschel
patent: 2205893 (1940-06-01), Unger
patent: 3476869 (1969-11-01), Hawkins
patent: 3719985 (1973-03-01), Federspill
patent: 4256146 (1981-03-01), Genini et al.
patent: 4372035 (1983-02-01), McMillen

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