Fluid operated chuck and methods of operation

Details Fluid operated chuck and methods of operation Fluid operated chuck and methods of operation

1994-03-01

1995-08-15

Bishop, Steven C.

Chucks or sockets

Expanding

Collet type

279 207, 279 403, 279 407, 279132, 279133, B23B 3120, B23B 3140

Patent

active

054412846

ABSTRACT:
Workpiece chucking apparatus includes a chuck body mounting a first plurality of prepositioning lock-up fingers and a second plurality of gripping fingers. The lock-up fingers are biased together radially outwardly or inwardly into engagement with a peripheral wall of a workpiece to initially locate and support the wall of the workpiece in a centered position with respect to a central axis of the chucking apparatus. An inflatable bladder flexes the remaining gripping fingers into gripping engagement with the peripheral wall to further radially support the wall in preparation for machining, without disturbing the prepositioning of the workpiece.

REFERENCES:
patent: 2460577 (1949-02-01), Hohwart et al.
patent: 2509673 (1950-05-01), Church
patent: 2565430 (1951-08-01), Hohwart et al.
patent: 2873121 (1959-02-01), Hahn
patent: 3542354 (1970-11-01), Fitzpatrick
patent: 3770287 (1973-11-01), Weber et al.
patent: 4139207 (1979-02-01), Grimes
patent: 4300780 (1981-11-01), Urbanic
patent: 4482162 (1984-11-01), Anegawa
patent: 4953877 (1990-09-01), Slachta et al.

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