Gear cutting – milling – or planing – Milling – Cutter spindle or spindle support
Patent
1985-06-14
1987-10-06
Weidenfeld, Gil
Gear cutting, milling, or planing
Milling
Cutter spindle or spindle support
279 1G, 279 4, 409 60, B23F 2312
Patent
active
046979662
ABSTRACT:
A pressurized or hydraulic clamp, with piston reset, for securing tools or workpieces, such as grinding wheels, milling tools, and the like, to a shaft. By pressurizing with a hydraulic fluid, a floating piston is pressed out of the clamping unit to hold the workpieces or tools against a support. In order to retract the piston when the hydraulic pressure is released, the circular piston is provided with a bead on its outside or inside, depending upon the application; the bead is connected to one or more springs. The springs, which are pre-tensioned in the starting position, and are further tensioned when the piston is driven out, automatically reset the piston when the pressure is released.
REFERENCES:
patent: 2911222 (1959-11-01), Eve
patent: 3242818 (1966-03-01), Kastler
Albert Schrem Werkzeugfabrik GmbH
Howell Daniel W.
Weidenfeld Gil
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