Workpart chuck positioning mechanism with independent shoes

Details Workpart chuck positioning mechanism with independent shoes Workpart chuck positioning mechanism with independent shoes

1990-11-28

1992-04-28

Bishop, Steven C.

Chucks or sockets

With measuring, indicating or control means

51238GG, 82170, 279133, B23B 1300, B24B 4900

Patent

active

051081172

ABSTRACT:
A workpart chuck centering mechanism moves towards the axis of rotation of the chuck as the chuck rotates in an eccentric non-centered position. The centering mechanism includes two independent shoes. Each shoe is driven by a servo-motor and encoder. The two shoes function in a cooperative manner to center the workpart. A sensing device monitors any eccentric movement of the workpart and controls the positioning of the shoes. The two shoes and the sensing device are mounted on a base which can pivot about the chuck axis. The directions of movement of the respective shoes are displaced 90.degree. relative to one another and intersect at the chuck axis.

REFERENCES:
patent: 3263374 (1966-08-01), Stuckey et al.
patent: 3281995 (1966-11-01), Parrella et al.
patent: 4790545 (1988-12-01), Dzewaltowski et al.
patent: 4926337 (1990-05-01), Gile

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