Smith, Gambrell & Russell, LLP
Cutting tool
Disclosed is a cutting tool, including: a cutting edge including a coating from a rake face to a flank face, and has a relief angle of not less than 15 degrees, a material of the coating having a higher wear resistance than a base material of the cutting edge, and during cutting of a work, an edge of the coating on the rake face at a top of the cutting edge is worn by friction with the work; with a progress of a wear inward in a radial direction, an edge of the coating on the flank face at the top of the cutting edge is removed by friction with the work to expose the base material thereunder; and the exposed base material is worn by friction with the work to retract the flank face inward in the radial direction.
MAKOTOLOY CO., LTD. FUJI JUKOGYO KABUSHIKI KAISHA
B B B B B Y Y Y
B23B B23B B23B B23B B23B Y10T Y10T Y10T
inventional additional additional additional additional additional additional additional
Masao Tatsuo Eiji Junji Manabu Hideharu Hirofumi
Watanabe Nakahata Hashimoto Tsuchiya Saito Takahashi Higashiwaki