DEVICE FOR MOUNTING CYLINDRICAL BILLETS FOR LATHE TREATMENT Russian patent published in 2017 - IPC B23B3/00 B23B31/163 

FIELD: mechanical engineering.

SUBSTANCE: device comprises a self-centering cartridge, which contains a spiral disc and a housing, consisting of interconnected front and rear portions, and a spindle, on the outer surface of which back body portion and a spiral disc cartridge are set. Internal surfaces of the rear part of the housing and the spiral disc and a conjugated outer surface of the spindle are made in a shape of the cone. The outer cone spindle surface may have a taper of 7:24. The device may be provided with the radially adjustable sleeve, mounted between conical surfaces of the spindle and the spiral disc.

EFFECT: improved accuracy of the workpieces based in the jaws of the cartridge, increased rigidity of the cartridge spindle coupling, reduced manufacturing costs and improved chuck jaws service term.

3 cl, 2 dwg