Chuck for machine tools

Chucks or sockets – With fluid-pressure actuator – Socket type

Patent

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Details

242 684, 279 1L, B23B 3102

Patent

active

045278083

ABSTRACT:
In a chuck (1) for lathes (4), which is provided with a compensating jaw set (61) for adaptation to unequal workpieces (2) and with a centering jaw set (21) engaging at axial spacing therefrom, the centering jaws (22) are guided normal to the longitudinal axis (A) of the chuck for adjustment in centering jaw heads (16) axially displaceable to a limited extent, which centering jaw heads can be coupled through axis-parallel connecting elements (19) with a common positioning member (18). Also, the connecting elements (19) are provided with wedge surfaces (32,33), by means of which the axial adjustment movement of the adjusting member (18) is deflectable into a radial feed movement. By this design, it is possible to clamp a workpiece (2) in the region (6) to be machined reliably in centered position and thereafter compensatorily, the centering jaws (22) being positioned axis-normal to the workpiece (2) and always engaging at an equal selectable distance from the compensating jaws (62), and this independently of the workpiece diameter.

REFERENCES:
patent: 1812006 (1931-06-01), Jellicoe
patent: 2893744 (1959-07-01), Anthony
patent: 4094522 (1978-06-01), Hiestand
patent: 4275892 (1981-06-01), Rohm

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