Punch assembly for hydroforming die

Details Punch assembly for hydroforming die Punch assembly for hydroforming die

2006-09-26

2006-09-26

Jones, David B. (Department: 3725)

Metal deforming

By application of fluent medium, or energy field

With cutting

C083S639100, C100S289000

Reexamination Certificate

active

07111482

ABSTRACT:
A punch assembly for a hydroforming die includes a servo motor, a ball screw connected to the servo motor, and a ball nut disposed about the ball screw for movement along the ball screw. The punch assembly also includes a link mechanism connected to the ball nut and a plunger operatively connected to the link mechanism and movable relative to the hydroforming die to allow fluid within a tubular member to force a wall portion of the tubular member outward against the plunger and be sheared by the hydroforming die to produce an opening in the tubular member.

REFERENCES:
patent: 5953972 (1999-09-01), Nakagawa
patent: 6006566 (1999-12-01), Huelsberg et al.
patent: 6401507 (2002-06-01), Krcek et al.
patent: 6520077 (2003-02-01), Minagawa et al.
patent: 6672120 (2004-01-01), Ghiran et al.
patent: 6722245 (2004-04-01), Yasoda et al.

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