THREADED SURFACE FINISHING APPARATUS Russian patent published in 1996 - IPC

FIELD: mechanical engineering. SUBSTANCE: apparatus has casing 1, drive spindle 3, spindle 6 with lapping tool 7, sleeve 10 for fastening part 9. Sleeve 10 has two supporting members. One supporting member has two ball bearings 13,15. Outer rings of ball bearings 13,15 are positioned for turning relative to inner rings by means of conical adjusting screws 15. Other supporting member has spring 17, stem 18 and hollow adjusting bolt 16. Stem 18 is fixed with its one end in sleeve 10 and with its other end is fixed in hollow bolt 16, with allowance space being left between bolt wall and other end of stem 18. EFFECT: increased efficiency, improved quality of worked surface and enhanced reliability in operation. 4 dwg