Method and apparatus for controlling the spacing between a metal

Details Method and apparatus for controlling the spacing between a metal Method and apparatus for controlling the spacing between a metal

1985-02-11

1986-11-25

Husar, Francis S.

Metal deforming

With means to drive tool

Including pneumatic- or fluid-actuated tool support

72427, 72465, 267119, 413 17, 413 67, B21D 2212, B21D 4504, B21D 5144

Patent

active

046241256

ABSTRACT:
Method and apparatus for controlling the spacing between a metal forming punch and a die pad in which the method includes supporting the work-piece on a fluid supported pad and the periphery of the work-piece on a fluid supported sleeve, engaging the workpiece with a forming punch and, during a portion of the travel of the forming punch, moving the pressure sleeve and the support pad for the central portion of the workpiece simultaneously while maintaining the spacing between the top of the pad and the bottom of the punch. The apparatus includes a die pad riser attached to the pad and to a pressure sleeve, both of which are movable in response to movement of the punch during a portion of the travel of the punch. The pressure sleeve is secured to the die pad riser so that the spacing between the punch and the die pad is maintained during such movement.

REFERENCES:
patent: 1930565 (1933-10-01), Rode et al.
patent: 2413591 (1946-12-01), Sturdy
patent: 3948075 (1976-04-01), Finsterwalder et al.
patent: 4125009 (1978-11-01), Byrd et al.
patent: 4206701 (1980-06-01), Hemmelgarn
patent: 4207048 (1980-06-01), Seymour
patent: 4249410 (1981-02-01), Crago et al.
patent: 4375785 (1983-03-01), Schoch et al.
patent: 4377084 (1983-03-01), Kaminski
patent: 4455114 (1984-06-01), Zysset

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