| 摘要 |
A generally square-shaped indexable cutting insert (10) with four cutting edges (20) for mounting in milling cutters (52, 54) for either slotting operations or for left-hand and right-hand face milling of right-angled corners in a metal workpiece. The cutting edge is parallel to the bottom surface (14) and has a primary cutting edge (26) extending between two wiper s (24), each wiper being adjacent a corner edge (22). A first relief surface (34) adjacent the primary cutting edge has a first relief angle (x1) and a second relief adjacent the two wipers has a second relief angle (x2) that is greater than the first relief angle. The first relief surface has a width dimension measured perpendicularly to the cutting edge that has a minimum value proximal to the two wipers and a maximum value at a central region (42 ) of the cutting edge. |
