Sheet metal clamping apparatus

Details Sheet metal clamping apparatus Sheet metal clamping apparatus

1982-04-02

1984-06-12

Crane, Daniel C.

Metal deforming

By use of non-deforming work-gripping clamp and relatively...

By individually non-deforming clamps

72311, B21D 1102

Patent

active

044533942

ABSTRACT:
A clamping apparatus for a metal sheet stretching machine is provided with hydraulically operated connecting rods for closing the clamping jaws onto the sheet metal. The rods transmit only compressive forces and are retracted after the tightening of the clamping jaws during stretching. Pulling cables serve to selectively open the clamping jaws.

REFERENCES:
patent: 3349598 (1967-10-01), Pollak
patent: 3540257 (1970-11-01), Hertl
patent: 3685333 (1972-08-01), Priebe

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