COLLET CHUCK FOR ROLLING ELEMENT SCREW DRIVE

摘要

A collet chuck with a chuck body, a collet, and a clamping nut in which the chuck body has a coupling section for coupling the collet chuck to the working spindle of a machine tool and has a collet holder embodied in the form of an inner cone and at least one thread groove for the screwing-on of the clamping nut; the collet has an outer cone, which is complementary to this inner cone, as well as a cylindrical tool holder; the collet chuck is embodied so that by tightening the clamping nut, the collet can be driven far enough into the collet holder that the tool shaft is held in a rotationally secured fashion; and the clamping nut has at least one thread groove; where rolling elements are inserted between the thread grooves of the chuck body and the clamping nut so that the clamping nut and the chuck body constitute a rolling element screw drive.

主权项

1. A collet chuck, comprising:
a chuck body; a collet; and a clamping nut having at least one thread groove, wherein the chuck body has a coupling section for coupling the collet chuck to a working spindle of a machine tool and has a collet holder embodied in the form of an inner cone and at least one thread groove for screwing on the clamping nut, the collet has an outer cone, which is complementary to the inner cone, and a cylindrical tool holder, the collet chuck is embodied so that by tightening the clamping nut, the collet can be driven far enough into the collet holder that the tool shaft is held in a rotationally secured fashion, and rolling elements are inserted between the thread grooves of the chuck body and the clamping nut so that the clamping nut and the chuck body constitute a rolling element screw drive.