CUTTING TOOL FOR WORKING OPENINGS Russian patent published in 2003 - IPC

FIELD: metal cutting. SUBSTANCE: cutting tool includes attached unclampable reamer mounted in mandrel at side of its front end on cone surface and at side of its rear end on cylindrical surface joined with mandrel by means of preliminarily twisted coil spring and pin stationary mounted in mandrel and coupled with shaped groove of reamer for providing axial motion of reamer along mandrel at rotating reamer relative to mandrel. Sleeve is mounted between mandrel and unclampable reamer at side of its front end with possibility of axial motion along mandrel by means of screw on needle-type bearing. Lateral cone surface of said sleeve is always in contact with inner cone surface of unclampable reamer. EFFECT: improved accuracy of adjusting tool, increased useful time period of tool, enlarged range of admissible cutting modes. 1 dwg