Device for actuating tools, in particular, clamping means, subje

Details Device for actuating tools, in particular, clamping means, subje Device for actuating tools, in particular, clamping means, subje

1988-03-24

1989-09-05

Watson, Robert C.

Work holders

Holder mounted for movement

Relative to a station

269 25, 269304, 269329, B23Q 700

Patent

active

048631507

ABSTRACT:
The invention provides a device for actuating a clamping tool means by fluid pressure and for monitoring the fluid pressure, which comprises a carrier for a workpiece and the clamping tool means, a first mounting element on the carrier, a second mounting element, and means for detachably coupling the second mounting element to the first mounting element. A pressure fluid conduit system is connected to a fluid pressure generator and includes a first fluid pressure conduit in the first mounting element, a second fluid pressure conduit in the second mounting element, detachable connections between the first and second fluid pressure conduits, the detachable connection in the first fluid pressure conduit including a check valve retaining the fluid pressure in the first fluid pressure conduit when the second fluid pressure conduit is detached, and a third fluid pressure conduit connecting the first fluid pressure conduit to the clamping tool means. A push-button switch including a switching element is in direct communication with the first fluid pressure conduit and is responsive to a predetermined decrease in the fluid pressure retained therein, and a pressure signal generator is operated by the push-button switch for emitting a signal upon actuation of the switching element in response to the fluid pressure decrease.

REFERENCES:
patent: 4092887 (1978-06-01), Brower
patent: 4468019 (1984-08-01), Staudenmaier
patent: 4664364 (1987-05-01), Lymburner
patent: 4693458 (1987-09-01), Lewecke et al.
patent: 4697799 (1987-10-01), Wickham et al.

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