LATHE CHUCK Russian patent published in 1995 - IPC

FIELD: machine-tool manufacture. SUBSTANCE: body 1 accommodates cams 2 with wedged surfaces that are engageable with wedged surfaces of coupling 4, attached to which are separator 5 with hinges 6. Located inside wedge coupling 4 is rod 7 with taper surfaces 8, which is secured on link 9 with the aid of flanges 10 and 11, which provides restricted axial displacement of coupling 4 spring-loaded by spring 12. When the link moves rightward, cams 3 move until they touch the workpiece surface, the coupling is misaligned with the axis of chuck rotation. This position is fixed at jamming of balls 6 between body 1 and taper surface 8. This allows the workpiece to be placed in the same arbor in alignment with the surface machined on the other, opposite arbor. EFFECT: enhanced accuracy. 3 dwg