CUTTING INSERT AND GEAR MILLING CUTTER

摘要

Disclosed are a cutting insert and a gear milling cutter. A first main lateral part (10a) of an insert main body (4) of the cutting insert (2) includes a first recess (22a) having a first bottom surface (24a), and a second main lateral part includes a second recess (22b) having a second bottom surface (24b). The first bottom surface (24a) and the second bottom surface (24b) are extended substantially in parallel with an axial line (6) in the longitudinal direction of the insert main body (4). A first lateral part (14a) has a third recess (26a) having a third bottom surface (28a). A second later part (14b) has a fourth recess (26b) having a fourth bottom surface (28b). The third bottom surface (28a) and the fourth bottom surface (28b) are extended while traversing the axial line (6) in the longitudinal direction. Accordingly, the cutting insert may be supported by a related gear milling cutter with respect to one of the first bottom surface and the second bottom surface and one of the third bottom surface and the fourth bottom surface.