Chucks or sockets – With fluid-pressure actuator – Socket type
Patent
1981-02-23
1984-01-03
Briggs, William R.
Chucks or sockets
With fluid-pressure actuator
Socket type
279 1D, B23B 3130
Patent
active
044238800
ABSTRACT:
An improved chuck utilizing a self-contained hydraulic system integrated to the spindle rotor to radially flex a thin walled diaphragm so as to grip a collet and a tool therein. Pressure in the hydraulic system is controlled by means of a plunger which is forced to a position which compresses the hydraulic fluid by means of a spring. The plunger may be pushed against the action of the spring in order to decompress the fluid by means of a mechanical release which is removed from the plunger during the operation of the chuck. A built-in hydraulic amplification system achieves high clamping pressure with a small actuating force. Accordingly, only a small actuating force is also required to relieve the clamping pressure so that the chuck bearings are not overloaded while the tool is being released.
REFERENCES:
patent: 3370842 (1968-02-01), Sykes
patent: 3507507 (1970-04-01), Tobler
patent: 3521894 (1970-07-01), Haviland
patent: 3542354 (1970-11-01), Fitzpatrick
patent: 3679219 (1972-07-01), Cameron
patent: 3830509 (1974-08-01), Weber
Briggs William R.
Cooper Industries Inc.
Howell Daniel W.
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