Self centering chuck

Details Self centering chuck Self centering chuck

1990-03-09

1992-11-03

Schwartz, Larry I.

Chucks or sockets

Radially reciprocating jaws

Wedge actuated

269234, 279110, 279 412, B23B 3116

Patent

active

051601516

ABSTRACT:
A self-centering chuck includes a plurality of centering and clamping slides disposed for slide movement to or from a common center, drive slides are associated with the centering and clamping slides, the latter having parallel or slightly oblique orientation to the drive slides means so as to slidingly move at least essentially parallel to the slide movement of at least one of the centering and clamping slides, the centering slides and the drive slides have wedge surfaces; a plurality of shift pins extend transversely to the centering and clamping slides and to the drive slides and cooperate with the wedge surfaces to couple the drive slides to the centering and clamping slides to obtain movement to or from the center of all centering slides; the shift pins each movein one direction in relation to the respective centering and clamping slide when the drive slides moves in one direction, and the shift pins move in an opposite direction when the drive slides move in the respective opposite direction, the movements of the pins being essentially transversely to the movements of the slides; the drive slides being connected to the shift pins such that for uniform movement of the drive slides in one direction, at least two centering and clamping slides move oppositely in relation to each other; the pins have also wedge surfaces at their respective ends, the wedge surfaces being steeper at one end as compared with the opposite end of the same pin.

REFERENCES:
patent: 1786147 (1930-12-01), Bullard
patent: 4508357 (1985-04-01), Reich
patent: 4747609 (1988-05-01), Scharfen

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