Werkzeughalter an einer Werkzeugmaschine und Bearbeitungsverfahren eines Werkstuecks

DE 102008052326 A1 UPAB: 20100430 NOVELTY - The tool holder has a tool holder (2) for mounting a tool, which extends in the direction of a main axis (10) of a tool holder. A piezoelectric shear transducer (3) produces an ultrasonic torsional oscillation in the tool holder around the main axis. The piezoelectric shear transducer has two surfaces (3a,3b). A bearing surface (2a) of the tool holder is directly supported on former surface of the piezoelectric shear transducer. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for operating a work piece with a tool holder. USE - Tool holder for holding a tool on a machine tool (Claimed). ADVANTAGE - The piezoelectric shear transducer is provided for producing an ultrasonic torsional oscillation in the tool holder around the main axis, and hence ensures a simple tool holder with high productivity for machining the materials