Patent ID: 9095911
Filing Date: 2015-08-04
Classification: B23B,B23Q,Y10T

Abstract:
1. A power-operated chuck for machine tools for machining of rotationally symmetrical workpieces, the chuck comprising: a base body adapted to be attached to the machine tool, at least two clamping jaws held in a movable arrangement in said base body and synchronously controlled and moveable radially onto a workpiece, and which are clamped by means of one wedge rod each, and an actuating element held in an axially movable arrangement in said base body, said actuating element being connected with one of the wedge rods, and held coaxially in said base body in relation to a longitudinal axis of said base body, wherein there is play between said actuating element and said base body, wherein centering devices are supported on said base body and are provided laterally offset to at least one of said clamping jaws, each of said centering devices being adapted to exert a radially vectored force directly on the workpiece, which force can be adjusted, by means of which play between said actuating element and said base body is compensated, and said centering devices are adapted to be actuated selectively jointly, or synchronously, or independently from one another, and independently from the clamping jaws; whereby the workpiece is adapted to be moved in three dimensions of space while the jaws are holding the workpiece.