THROWAWAY TIP AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a throwaway tip capable of more strictly setting a cutting blade shape in a specified shape without causing welding even in cutting hardened steel, etc. SOLUTION: Surface roughness Rz of a honing surface 11 is set in a range of 0.1 to 0.5Z by setting surface roughness Rz of a flank 10 at least on the crossing crest line side of the cutting blade part 8 in a range of 0.1 to 0.5Z and forming the honing surface 11 along the crossing crest line of this cutting blade part 8 on this throwaway tip on which the cutting blade part 8 made of a cemented carbide sintered body 6 in a periphery of the crossing crest line part of a rake face 9 and the flank 10 of a tip main body 1. COPYRIGHT: (C)2008,JPO&INPIT