Sumitomo Electric Hardmetal Corp.

Taiga Sueyoshi

Junya Okida

Shota Takemura

Yosuke Shimamoto

Naoya Tsuda

Yifan Wen

Yasuhiko Okita

Cutting tool

The boundary flow path is constituted of a pair of boundary wall surfaces facing each other in a first cross section intersecting each of the first flow path, the boundary flow path, and the second flow path. An inclination of a tangent to at least one of the pair of boundary wall surfaces is continuously changed. In a second cross section perpendicular to a direction in which coolant flows, a lateral width of the first flow path is larger than a longitudinal width of the first flow path and a lateral width of the second flow path is larger than a longitudinal width of the second flow path when a longitudinal direction represents a direction in which the pair of boundary wall surfaces face each other and a lateral direction represents a direction perpendicular to the longitudinal direction.

Retaining member and cutting tool

Cutting tool insert

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Itami, Japan

Taiga Sueyoshi