Pneumatic driven automatic chuck
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United States of America Patent
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Jun 8, 1999
Grant Date -
N/A
app pub date -
Dec 5, 1997
filing date -
Dec 6, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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