Method and apparatus for hydrotrimming and hydroshearing

Details Method and apparatus for hydrotrimming and hydroshearing Method and apparatus for hydrotrimming and hydroshearing

1998-11-23

1999-08-24

Jones, David

Metal deforming

By application of fluent medium, or energy field

With cutting

83 53, 83 54, B21D 2828

Patent

active

059411120

ABSTRACT:
A tubular member is manufactured in a hydroforming and hydroshearing apparatus. A substantially right circular cylindrical workpiece is placed in a die and pressurized to hydroform a substantially rectangular tubular product. The workpiece is presheared during the pressurization period and is fully sheared during the withdrawal of a plurality of plunger members while the internal pressure is maintained. The plunger members are positioned in the die by respective power cylinders which control the withdrawal thereof.

REFERENCES:
patent: 3383888 (1968-05-01), Aschberger
patent: 3786662 (1974-01-01), Roth
patent: 4989482 (1991-02-01), Mason
patent: 5398533 (1995-03-01), Shimanovski et al.

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