Pneumatic driven automatic chuck

Details Pneumatic driven automatic chuck Pneumatic driven automatic chuck

1997-12-05

1999-06-08

Bishop, Steven C.

Chucks or sockets

With fluid-pressure actuator

Pneumatic type

279 412, 279157, 219 6915, 901 37, 409234, 82160, B23B 3130, B23B 3122

Patent

active

059098821

ABSTRACT:
A pneumatically driven chuck for clamping and unclamping a tool holder of a machine tool, especially an electric discharge machine, said chuck including a mechanical clamp for clamping said tool holder, a first air chamber for receiving opening air for releasing said mechanical clamp, a second air chamber for receiving cleaning air to provide pneumatic clamping of said tool holder, and a release valve in pneumatic communication with said first and second air chambers to release cleaning air pressure from said second air chamber when opening air is provided to said first chamber. The pneumatically driven chuck may replace a spring driven chuck without any change in the control or in the program of the EDM.

REFERENCES:
patent: 4652203 (1987-03-01), Nakashima et al.
patent: 4745674 (1988-05-01), Abe et al.
patent: 4855558 (1989-08-01), Ramsbro
patent: 5791803 (1998-08-01), Nordquist

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