Chucks or sockets – With fluid-pressure actuator – Socket type
Patent
1979-07-20
1980-12-23
Briggs, William R.
Chucks or sockets
With fluid-pressure actuator
Socket type
279121, B23B 3116
Patent
active
042406455
ABSTRACT:
A lathe chuck has a chuck body rotatable about a chuck axis and formed with a plurality of angularly spaced radially extending inner guides receiving respective inner jaw parts and with a plurality of angularly spaced and radially extending outer guides receiving respective outer jaw parts. An operating element is engageable with the inner jaw parts for radially displacing same in the chuck body in the respective inner guides. Coupling members are each axially displaceable by respective radially displaceable cams in the inner jaw parts and are each displaceable between a coupling position engaging the respective outer jaw part and coupling same to the respective inner jaw part for joint radial movement thereof, and a decoupling position for relative radial displacement of the respective jaw parts. Adjacent each of the jaws is a radially displaceable weight, and a first-class lever has a center fulcrumed in the chuck body, a rear end in radial force-transmitting engagement with the respective weight, and a front end in radial force-transmitting engagement with the respective inner jaw part, to convert centrifugally outwardly effective forces in the weights to centrifugally inwardly effective forces in the inner jaw parts. The front ends of the levers are pivoted in the respective inner jaw parts, and each cam is engageable on displacement into the decoupling position with the respective front lever end to displace the respective coupling member into the decoupling position.
REFERENCES:
patent: 4047723 (1977-09-01), Buck
patent: 4078814 (1978-03-01), Rohas
patent: 4097053 (1978-06-01), Steinberger
Briggs William R.
Ross Karl F.
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