Cutting tool finishing apparatus and cutting tool finishing method

摘要

PROBLEM TO BE SOLVED: To provide a cutting tool finishing device and a cutting tool finishing method in which a blade edge of a cutting tool such as a throw-away tip can be finished highly precisely and uniformly, and thereby the life extension of the tool can be achieved.SOLUTION: Two or more clamping pieces 37 are attached to a tool holding device 30. The clamping pieces 37 have a shaft part 38 serving as a fulcrum of opening and closing. A holding tip part 39 for holding a chip 1 from the side surface side is formed at the tip side from the shaft part 38, and a rear end 40 with a rod member 52 coming into contact therewith is formed at the rear end side. When the rod member 52 advances, rear ends 40 are mutually separated centering on the shaft part 38, and alternatively, holding tip parts 39 get together and the clamping pieces 37 are closed, and thereby the chip 1 is held. A contact surface of a blade edge 2 of the chip 1 to a finishing pad 21 is shifted along the finishing pad 21 by rotating the tool holding device 30, and the position of the blade edge 2 to the finishing pad 21 is changed according to the rotation of the tool holding device 30, and thereby the amount of sinking of the blade edge 2 is made constant.