POLISHING METHOD USING LASER BEAM MACHINING, POLISHING DEVICE, AND POLISHED CUTTING TOOL

摘要

PPROBLEM TO BE SOLVED: To obtain a polishing depth invariable of a distance from a cutting edge ridgeline without causing microcracks and the graphitization of diamond particles by a polishing. PSOLUTION: The polishing method using a laser beam machining comprises: a cross-sectional diameter-fixing step where the cross-sectional diameter 2 of a focusing beam machining energy region when a repeated ultrashort light pulse laser beam 3 is focused with a focusing lens 2 is made almost fixed in a prescribed range to the direction of the optical axis 21 of the focusing lens 2; an optical axis regulation step where the optical axis 21 of the focusing lens 2 is adjusted so as to be almost parallel to the polishing face 72 in a polishing object 7; a focusing beam west part adjustment step where the focusing beam west part 31 of an ultrashort light pulse laser beam 3 by the focusing lens 2 is regulated so as to be present at the polishing part 73; and a movement step where the focusing beam west part 31 by the focusing lens 2 is relatively moved at a prescribed moving velocity along the polishing part 73. PCOPYRIGHT: (C)2009,JPO&INPIT