CPC B23B 27/1622 (2013.01) [B23B 2200/16 (2013.01); B23B 2200/165 (2013.01); B23B 2205/12 (2013.01); B23B 2205/16 (2013.01)] | 17 Claims |
1. A cutting insert supported by a mounting portion when mounted on a cutting tool, comprising:
an upper surface;
a lower surface;
a plurality of side surfaces extending between the upper surface and the lower surface;
an insert hole extending through the upper surface and the lower surface; and
a corner portion provided with a cutting edge,
wherein:
at least one of the upper surface and the lower surface has a plurality of recesses extending between the insert hole and the corner portion,
the plurality of recesses includes a first recess into which a first portion of the mounting portion is inserted when the cutting insert is supported by the mounting portion, and a second recess into which a second portion of the mounting portion is inserted when the cutting insert is supported by the mounting portion,
the second recess has a side wall spaced apart from the second portion of the mounting portion; and
the first recess makes contact with the mounting portion at two points, and the second recess has a bottom surface making contact with the mounting portion.
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