FLOATING CHUCK Russian patent published in 2004 - IPC

FIELD: manufacturing processes in machine engineering, namely working of precise openings by means of reamers. SUBSTANCE: chuck includes outer hollow part designed for joining with machine tool; inner part arranged inside outer part, designed for mounting cutting tool and having sleeve with cone outer surface moving along axis of inner part. Said sleeve may be joined with inner cone surface of outer part. In order to provide automatic control, chuck includes-shaped double-arm levers mounted on outer hollow part with possibility of rotation by action of centrifugal forces around axes normal relative to chuck rotation axis. One arm of each lever carries weight; second arm is joined with said sleeve. The last is spring-loaded along axis for close joining to outer part along cone surface when chuck is arrested and it may be disconnected from outer hollow part by action of centrifugal forces of weights causing rotation of double-arm levers and by axial shifting of sleeve . EFFECT: improved design. 2 dwg