Method for shaping tubular member

Details Method for shaping tubular member Method for shaping tubular member

1998-03-12

1999-09-14

Crane, Daniel C.

Metal deforming

By three or more coacting relatively movable tools

Yieldable face portion or auxiliary tool on tool-couple element

7237004, B21D 904, B21D 1702

Patent

active

059504820

ABSTRACT:
A tubular member to be shaped comprises a first portion to be shaped and a second portion other than the first portion. A punch having a projection is inserted into the tubular member and the tubular member is pressed between a die having a recess and an anvil within a range where elastic deformation of the second portion occurs, to thereby form the first portion into an outwardly projecting portion. When the first portion is to be formed into an inwardly projecting portion, a die having a recess is inserted into the tubular member and the tubular member is pressed between a punch having a projection and an anvil within a range where elastic deformation of the second portion occurs, to thereby form the first portion into the inwardly projecting portion.

REFERENCES:
patent: 3494170 (1970-02-01), Valleins
patent: 4569256 (1986-02-01), Pepper
patent: 5634367 (1997-06-01), Yamada

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