External activation mechanism for pressurized forming cavity

Details External activation mechanism for pressurized forming cavity External activation mechanism for pressurized forming cavity

2005-08-02

2005-08-02

Crane, Daniel C. (Department: 3725)

Metal deforming

By application of fluent medium, or energy field

With actuated tool engaging work

C029S421100

Reexamination Certificate

active

06923030

ABSTRACT:
A mechanical mechanism is disclosed for supplementing the action of a pressurized working gas in hot blow forming of a sheet material. Opposing complementary heated forming tools grip the sheet material and form a shaping surface on one side of the sheet and a gas pressure chamber on the other side. An internal complementary mechanical forming device is located inside the pressure chamber. The device is operated by an internal rotatable shaft supported through the chamber defining tool wall. The internal shaft is coupled outside the tool wall to an external shaft for external activation of the mechanical forming device. The external shaft and coupling are enclosed in a housing structure that provide a pressure seal, thrust support and thermal insulation for the external activation mechanism.

REFERENCES:
patent: 2704104 (1955-03-01), Mueller
patent: 4006619 (1977-02-01), Anderson
patent: 4510780 (1985-04-01), Cadwell
patent: 6305202 (2001-10-01), Kleber
patent: 6776953 (2004-08-01), Hulsberg et al.

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