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Invention Application
WO2021153599A1 回転工具及び切削加工物の製造方法 审中-公开

回転工具及び切削加工物の製造方法
Abstract:
本開示の限定されない一面に基づく回転工具は、回転軸に沿って第１端から第２端にかけて延び、回転軸の周りで回転可能な本体を有する。本体は、第１端の側に位置する切刃と、切刃に接続された凹部と、凹部から第２端に向かって延びた溝と、外周面と、を有する。切刃は、第１刃と、第１刃よりも外周面の近くに位置する第２刃と、を有する。凹部は、凹曲面形状の底面と、底面よりも回転軸の近くに位置する第１平面と、底面よりも外周面の近くに位置する第２平面と、を有する。そして、第１平面が、第１刃に接続され、第２平面が、第２刃に接続される。
Abstract(English):

A rotating tool according to one non-limiting aspect of the present disclosure has a body that extends from a first end to a second end along a rotation axis and is rotatable about the rotation axis. The body has a cutting edge that is positioned on the side of the first end, a recessed portion that is connected to the cutting edge, a flute that extends from the recessed portion toward the second end, and an outer peripheral surface. The cutting edge has a first cutting edge and a second cutting edge that is positioned closer to the outer peripheral surface than the first cutting edge. The recessed portion has a bottom surface in a concave curved surface shape, a first flat surface that is positioned closer to the rotation axis than the bottom surface, and a second flat surface that is positioned closer to the outer peripheral surface than the bottom surface. The first flat surface is connected to the first cutting edge and the second flat surface is connected to the second cutting edge.

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