| 摘要 |
An exchangeable, indexable cutting insert of substantially prismatic shape having an upper rake surface (2), an opposite, substantially parallel base surface and side surfaces (3) with each pair of side surfaces intersecting at an insert corner, each side surface intersecting with said rake surface so as to define a cutting edge (5), each cutting edge comprising a major cutting edge portion (5a) extending from one insert corner and a succeeding minor cutting edge portion (5b) terminating in a successive insert corner, and chip diverting ribs (12) respectively associated with said cutting edges and formed on said rake surface, each rib (12) extending from a region adjacent the merging of said major and minor portions of the associated cutting edge so as to be substantially coextensive with said region and so as to be spaced therefrom by a portion of said rake surface. <IMAGE> |
