Chuck for machine tools

Details Chuck for machine tools Chuck for machine tools

1992-02-14

1992-10-27

Bishop, Steven C.

Chucks or sockets

Radially reciprocating jaws

Wedge actuated

279124, 279125, B23B 3116

Patent

active

051583070

ABSTRACT:
A machine tool chuck in which a wedge member is provided to cause radial displacement of workpiece clamping pawls for replacement. The replacement can be made with minimum variations in radial position at which the clamping pawls are relocated. To this end, the clamping pawls and slide blocks are slidably guided radially through a chuck body independently of each other. Each clamping pawl and each slide block are in slidable engagement with a sloping wedge action portion of an axial slidable wedge bar in such a way that axial displacement of the wedge bar will force both the clamping pawl and the slide block to move radially independently of each other while maintaining the geometric relationship therebetween. For replacement of the clamping pawl, the wedge bar is moved backward to cause its wedge action portion to be disengaged from the clamping pawl whereby the clamping pawl can be slid radially outwardly for replacement.

REFERENCES:
patent: 4007943 (1977-02-01), Scharfen et al.
patent: 4026566 (1977-05-01), Rohm
patent: 4198067 (1980-04-01), Steinberger

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