| 主权项 |
1. A cutting insert for a gear milling cutter, the cutting insert comprising:
an insert body having a longitudinal axis extending along a longitudinal direction of the insert body, the insert body being generally shaped to fit inside an imaginary rectangular cuboid;
a first major side portion and a second major side portion extending in the longitudinal direction on opposite sides of the insert body;a first rake face side portion and a second rake face side portion extending in the longitudinal direction on opposite sides of the insert body;a first minor side portion and a second minor side portion extending across the longitudinal axis on opposite sides of the insert body; andfour curved cutting edges, each curved cutting edge extending along a rim portion formed at an intersection between the first or second rake face side portion and the first or second major side portion continuing into the first or second minor side portion, wherein each curved cutting edge including a tooth flank cutting portion and a tooth root cutting portion, wherein the first major side portion is provided with a first recess having a first bottom surface and the second major side portion is provided with a second recess having a second bottom surface, the first and second bottom surfaces extending substantially in parallel with the longitudinal axis, and wherein the first minor side portion is provided with a third recess having a third bottom surface and the second minor side portion is provided with a fourth recess having a fourth bottom surface, the third and fourth bottom surfaces extending across the longitudinal axis. |
