CUTTING TOOL, METHOD OF FORMING CUTTING TOOL, AND METHOD OF MANUFACTURING CUTTING TOOL

摘要

[PROBLEMS] To provide a cutting tool the service life of which can be extended by preventing the worn width (VB) of the relief surface from increasing and preventing the edge from being broken. [MEANS FOR SOLVING THE PROBLEMS] This cutting tool comprises a cutting edge part (13) made of a high hard material in a sheet-like shape and a support part (14) for supporting the cutting edge part (13) on the rear side of the rake surface, whereby its service life can be extended.