METHOD OF MOUNTING BIT LEG FOR MACHINING AT METAL WORKING MACHINE TOOLS Russian patent published in 2011 - IPC B23P15/00 B23B31/107 

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and may be sued for mounting complex-shape blanks at metal working machine tools, namely, bit leg blank with dihedral angle wherein one plane provided with temporary dead cylindrical bore perpendicular to said plane. Proposed method comprises registering said blank on prism by dihedral angle planes excluding degrees of freedom and on pin excluding sixth degree of freedom, and clamping said blank with force directed along normal to bit leg blank rear. Blank is registered on rhombic collet pin accommodating expanding cone spring-loaded relative to collet pin in axial direction by spiral spring via expanding ring. Blank is clamped by force transmitted by blank flat bottom on temporary bore side to spring knob built in expanding cone head till contact between collet pin end lugs and blank temporary bore and simultaneous contact between dihedral angle planes and prism planes.

EFFECT: higher precision of register and simple operation.

9 dwg, 1 ex