| 摘要 |
An indexable cutting insert has first and second side surfaces and a peripheral surface extending therebetween. The peripheral surface has identical peripheral faces, each divided into two identical first and second cutting sections. Each cutting section has a first cutting edge, a second cutting edge, a corner cutting edge which extends between the first and second cutting edges and a rake surface having a planar rake surface flat forming an engagement surface. The rake surface meets the first side surface at the first cutting edge. The rake surface flat meets the second side surface at a rake surface open edge. On each peripheral face, the two cutting sections are non-coplanar. Each two rake surface flats associated with first cutting sections converge in a direction along an insert axis and the cutting edges are raised above the rake surface flat. |
