TURNING WIDE-RANGE CHUCK Russian patent published in 1994 - IPC

FIELD: machine engineering. SUBSTANCE: chuck has the case made of two half-cases 1 and 2, cams 3, spiral disk 5 with plungers 6 installed in its radial slots 7. The plungers are connected to central tie-rod 9 by means of inclined slots 8. Archimedes' spiral 22 is made on the plungers and spiral disk, which have the possibility of angular connection with cams by means of spiral-rack gearing 4. The cams are adjusted to dimension as follows: rotation is transmitted from gear 14 to disk 5 with plungers 6 and through the spiral-rack gearing 4 it causes movement of cams 8. In this case the tie-rod 9 rotates jointly with the disk. The blank is fastened at axial motion of the tie-rod. EFFECT: enhanced efficiency of turning. 2 dwg