Air bearing assist in pneumatic forming of thin foil materials

Details Air bearing assist in pneumatic forming of thin foil materials Air bearing assist in pneumatic forming of thin foil materials

1995-03-30

1998-05-12

Jones, David

Metal deforming

By application of fluent medium, or energy field

Using fixed die

72 54, 72709, 294211, B21D 2602, B23P 1700

Patent

active

057492549

ABSTRACT:
A method for pneumatic forming of foil workpieces includes the steps of positioning a foil workpiece between a first and a second forming element, the second forming element having at least one forming cavity, moving the first and second forming elements into a clamping relationship with the foil workpiece, increasing pneumatic pressure between the first forming element and the foil workpiece to form the foil workpiece into the forming cavity, supplying a gas between the foil and the second forming element sufficient to enable the foil workpiece to move along the surface of the second forming element during the forming of the foil workpiece into the forming cavity, and removing the foil workpiece in a formed condition from between the first and second forming elements.

REFERENCES:
patent: 2745173 (1956-05-01), Janes
patent: 4354369 (1982-10-01), Hamilton
patent: 4516419 (1985-05-01), Agrawl
patent: 4901552 (1990-02-01), Ginty et al.
patent: 4951491 (1990-08-01), Lorentz
patent: 4984348 (1991-01-01), Cadwell
patent: 5090981 (1992-02-01), Rusek, Jr.
patent: 5094899 (1992-03-01), Rusek, Jr.
patent: 5376424 (1994-12-01), Watanabe
patent: 5419170 (1995-05-01), Sanders et al.

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