DEEP HOLE MACHINING GUIDE Russian patent published in 2003 - IPC

FIELD: metal working. SUBSTANCE: invention relates to deep drilling and boring of hole with external delivery of lubricating and cooling liquid. Proposed guide contains housing, spindle, jig bushing, aligning rotating bushing for blank made in form of cup. Cup is provided with intermediate bushing whose inner diameter corresponds to outer diameter of blank and bushing with inner conical surface is secured on spindle. Bushing with inner conical surface stationary mated with outer surface of conical shank of cup accommodating rotating jig bushing installed coaxially with spindle. Cup, intermediate and jig bushings can be removed for replacement and adjustment. EFFECT: enlarged operating capabilities. 1 dwg