Cushion pin, wear plate, load supporting device, die...

Details Cushion pin, wear plate, load supporting device, die... Cushion pin, wear plate, load supporting device, die...

2007-07-17

2007-07-17

Banks, Derris H. (Department: 3725)

Metal deforming

By use of closed-die and coacting work-forcer

Cup or shell drawing

C267S130000

Reexamination Certificate

active

10705862

ABSTRACT:
An elastic member is disposed on a load supporting device such as cushion pins and wear plates, which are placed between at least a workpiece and a die cushion pad and transfer a load applied to the work to the die cushion pad, to support the load. The load supporting device is disposed in two or more on the die cushion pad to realize equalization of the load applied to a die cushion. Thus, use of a conventional large-scale hydraulic circuit is eliminated, and the device can be simplified. Also, the press machine can be produced at a low cost.

REFERENCES:
patent: 1827440 (1931-10-01), Rode
patent: 3942354 (1976-03-01), Randolph, Sr.
patent: 5197718 (1993-03-01), Wallis
patent: 5386975 (1995-02-01), Wallis
patent: 5687598 (1997-11-01), Kirii et al.
patent: 5735201 (1998-04-01), Hirao et al.
patent: 5960665 (1999-10-01), Schoellhammer
patent: 6520075 (2003-02-01), Shinoda et al.
patent: EP 614711 (1994-09-01), None
patent: 5-27215 (1993-07-01), None

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