Tool chuck for equipment of a rotating machine like a drilling machine.

摘要

Chuck of the type comprising a body (2) which is fastened to the drive shaft of the machine and in which is mounted a plurality of jaws (6) sliding in bores and converging forwards, and a sleeve (9) surrounding the body and mounted pivotably about the latter, these jaws comprising a threaded external part in engagement with a nut (8) surrounding the jaws and fixed to the sleeve (9) surrounding the body, a series of balls (10) being interposed between the face of the nut turned rearwards and the body of the chuck. …According to the invention, the balls (10) bear against a ring (17) made of a hard material and itself bearing against a ring (13) made of synthetic material, having damping characteristics and blocked against the body. ……