SELF-ALIGNING CHUCK TO LATHE Russian patent published in 1995 - IPC

FIELD: machine tool building. SUBSTANCE: the body 1 of a chuck is secured to a spindle of the lathe, its body 2 is mounted by a stationary relative to the body 1. The cams 3 with the working cam members 4 and the levers 5 are arranged in the body 1. The axles 16, mounted in the levers 5, support the additional levers 6 with protrusions 18. A spherical friction coupling with packs of discs 10, 12 is mounted between the bodies 1,2. The rod 8 of a power hydraulic cylinder acts by its wedges 7 upon the additional levers 6. If an axis of a part does not coincide with an axis of the chuck 15, that misalignment is being compensated due to rotation of the body 2 relative to the body 1 along the discs of the friction coupling. Then with the aid of the protrusions 18, acting upon the pressure disc 9, a final tightening is being performed. EFFECT: enlarged manufacturing possibilities at using the chuck. 1 cl, 2 dwg