| 摘要 |
A cutting edge exchange type cutting tool is provided which can suppress a variation of the position of a cutting edge due to turning moments of a plurality of different directions acting on a cutting insert by a fastening force of a screw or a force of a cutting resistance during a cutting work. A chip seat (21) has a bottom surface (26) and first and second wall surfaces (22, 24). A cutting insert (30) has a first inclined surface part (35) and a second inclined surface part (36). In the first wall surface (22), a first abutting part (23) which abuts on the first inclined surface part (35) is formed. In the second wall surface (24), a second abutting part (25) which abuts on the second inclined surface part (36) is formed. The first and second inclined surface parts (35, 36) are formed with flat surfaces. The first inclined surface part (35) is inclined at an obtuse angle to the bottom surface (26). The second inclined surface part (36) is inclined at an acute angle to the bottom surface (26). |
