| 摘要 |
A cutting insert of one embodiment is provided with: an insert body having a top surface that has a corner section, a bottom surface, and side surfaces; a cutting edge that is positioned at an intersection between the top surface and the side surfaces, and includes a corner cutting edge, a first cutting edge and a second cutting edge; a rake face that slopes downward away from the cutting edge; and a first raised port that is positioned inside the rake face, and rises upward. The first raised part includes a protruding section that protrudes toward the corner cutting edge. The cutting insert is further provided with a second raised part that extends toward the first cutting edge and the second cutting edge from the protruding section, and has a convex curved shape in which, when viewed from above, the outer peripheral edge on the corner section side. |
| 主权项 |
1. A cutting insert comprising:
an insert body comprising
a polygonal-shaped top surface including a corner section, and a first side and a second side each adjacent to the corner section,a polygonal-shaped bottom surface corresponding to the top surface, andside surfaces positioned between the top surface and the bottom surface; a cutting edge positioned at an intersection between the top surface and the side surfaces, the cutting edge comprising
a corner cutting edge positioned at the corner section,a first cutting edge positioned on the first side, anda second cutting edge positioned on the second side; a rake face positioned along the cutting edge on the top surface, the rake face sloping downward away from the cutting edge; and a first raised part positioned inside the rake face on the top surface and rising upward; wherein the first raised part comprises a protruding section positioned so as to include a bisecting line of the corner section, protruding toward the corner cutting edge, and having a width in a direction orthogonal to the bisecting line that decreases toward the corner cutting edge when viewed from above; and the cutting insert further comprises a second raised part positioned on a tip side of the protruding section, extending toward the first cutting edge and the second cutting edge from the protruding section, and having a convex curved shape in which, when viewed from above, an outer peripheral edge on the corner section side forms a protuberance extending toward the corner section. |
