CUTTING TOOL AND METHOD FOR MANUFACTURING CUT PRODUCT USING SAME

摘要

Provided is a cutting tool in which a cutting edge is provided at a distal end section of a base body, wherein the coating performance required for both the cutting edge and a chip discharge section is satisfied. A cutting tool such as a drill (1) in which a coating layer (6) is provided to the surface of a rod-shaped base body (5), which is equipped with a cutting edge (2) provided to at least the distal end section (A) of the rod-shaped base body (5) and a chip discharge section (4) provided adjacent to the cutting edge (2) so as to extend rearwards (i.e., towards the rear end (B)) from the distal end section (A), the coating layer (6) comprising a mixture phase of diamond and graphite and having a diamond content ratio which is lower in a rear section (B) located 10 mm rearward from the distal end than in the distal end section (A).