Method and apparatus for shock release of thin foil materials

Details Method and apparatus for shock release of thin foil materials Method and apparatus for shock release of thin foil materials

1994-10-25

1996-07-30

Jones, David

Metal deforming

By application of fluent medium, or energy field

Using fixed die

72 63, B21D 2212

Patent

active

055400752

ABSTRACT:
A method is provided for releasing a thin foil workpiece from adherence with a resilient surface to which it adheres due to compression occurring in a forming operation. The method includes the steps of applying pneumatic pressure greater than ambient pressure between the first forming element and the workpiece while the workpiece remains held by compression. Thereafter, a second surface of a second forming element is separated from contact with the thin foil workpiece, removing compression, and rapid or shock release of the thin foil workpiece from its adherence to the resilient surface ensues. An alternative method is further provided.

REFERENCES:
patent: 2385083 (1945-09-01), Kemerer
patent: 2745173 (1956-05-01), Janos
patent: 3222902 (1965-12-01), Brejcha et al.
patent: 4748837 (1988-06-01), Kurosawa et al.
patent: 5090981 (1992-02-01), Rusek, Jr.
patent: 5094899 (1992-03-01), Rusek, Jr.
patent: 5376424 (1994-12-01), Watanabe

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