HOLE WORKING METHOD AND TOOL FOR ITS REALIZATION Russian patent published in 1998 - IPC

FIELD: mechanical engineering. SUBSTANCE: use is made of abrasive tapered tool the generatrix of which coincides with tangent to surface of tapered cambered hole in section of its maximum diameter. Tool is installed by matching of its maximum diameter with maximum diameter of tapered cambered hole. Relative axial reciprocating motion is transmitted to abrasive bars by moving them from small to larger base of cone and returning them to initial position. In this case, every abrasive bar makes backward turn in axial section around points on circumference positioned beyond tapered cambered hole at a distance of at least 2-3 lengths of hole being worked. EFFECT: more effective working of holes. 2 cl, 4 dwg