| 摘要 |
A cutting insert for a cutting tool is described. The cutting inserts generally square-shaped with two opposing surfaces and four peripheral side surfaces. Cutting edges are formed at the intersection between the first and second surfaces and the peripheral side surfaces. Each cutting edge is divided into a first portion, a second portion and a radius blend. The first portion has a length, L1, and the second portion has a length, L2, that is shorter than the first portion such that the radius blend is not located at a midpoint of the cutting edge, thereby increasing a height of the ninety-degree shoulder that can be cut by the cutting insert. |
| 主权项 |
1. A cutting insert, comprising:
a first surface and an opposing, second surface, the first and second surfaces are substantially identical to each other; four peripheral side surfaces extending entirely between the first and second surfaces, the four peripheral side surfaces are substantially identical to each other; four curved corners extending entirely between the first and second surfaces and adjacent peripheral side surfaces; four cutting edges formed at the intersection between the first surface and the peripheral side surfaces, and four cutting edges formed at the intersection between the second surface and the peripheral side surfaces, each cutting edge being divided into a first portion and a second portion with a radius blend separating the first and second portions, wherein the cutting insert is symmetric about a first central axis, A1, passing through the two opposing side peripheral surfaces, a second central axis, A2, passing through the other two opposing side peripheral surfaces, and a third central axis, A3, passing through the first and second surfaces, the first central axis, A1, being perpendicular to the second central axis, A2, and the third central axis, A3, being perpendicular to the first central axis A1 and to the second central axis, A2, and wherein the first portion has a length, L1, and the second portion has a length, L2, that is shorter than the first portion such that the radius blend is not located at a midpoint of the cutting edge. |
