FIELD: mechanical engineering; metal cutting machines. SUBSTANCE: body of chuck has flat auxiliary locating element, three control points, two-point locating element in form of cylindrical land, two control points and locating element in form of round pin, one control point (with addition of two pins for removal of unbalance) in clamping the shank of cutting tool with the aid of three brackets with point supports made integral with circular body movable in direction of clamping forces by means of nut on outer side on chuck body. EFFECT: enhanced stability of locating of cutting tool at rigid attachment. 2 dwg
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