| 摘要 |
A polygonal, metal-removing cutting insert has an at least one-sided top face which forms the first face and continuous side faces which form the flanks. The first face has a central chip breaker raised in relation to a plane defined by the cutting edges or in relation to a chip breaking flute adjacent to the cutting edge and having if required individual projections located therein. The chip breaker ends as at least one wedge-shaped longitudinal rib arranged in the chip removal area, as disclosed in the patent application PCT-DE 92/00886. In particular to allow good chip breakage and to prevent long chips, trough-shaped recesses and/or raised chip shaping means are arranged between and/or besides the longitudinal ribs. |
