| 摘要 |
A cutting insert (10) includes an upper, lower and side surfaces (16) and at least one leading cutting edge (20) and a trailing wiper edge (22) formed at an intersection of the upper surface (12) with the side surface. A corner (21) separates the leading cutting edge (20) from the trailing wiper edge (22). The top surface (12) includes a plurality of planar rake surfaces (26) that extend inwardly and downwardly toward a seating surface (24) of the insert (10). The top surface (12) also includes a plurality of chip deflecting surfaces (28) extending inwardly and upwardly toward the seating surface (24) to form a transition zone between adjacent rake surfaces (26). The rake surfaces (26) form a land angle (32) with respect to a line perpendicular to the leading cutting edges. Additionally, a back wall surface (34) extends upwardly from the rake surfaces (26) to the seating surface (24) to form a transition zone between the rake surfaces and the seating surface (24). |
