Sumitomo Electric Hardmetal Corp.

Hideki Tomimoto

Satoru Kukino

Takashi Harada

Naoki Watanobe

Mayuka Segawa

Hirotsugu Iwasaki

A cutting tool includes: a base metal provided with a seat portion; a blade edge member that is a polycrystalline diamond sintered material containing polycrystalline diamond and a binder; and a brazing material that fixes the blade edge member to the seat portion of the base metal. The blade edge member has a thickness of greater than or equal to 0.3 mm. The brazing material is disposed between a blade edge bottom face of the blade edge member and a seat bottom face of the seat portion and is in contact with the blade edge bottom face and the seat bottom face. The flank face is located outside of the base metal with respect to the lateral face of the base metal.

Growing community of inventors

Hyogo, Japan

Hideki Tomimoto