| 摘要 |
The invention relates to a cutting insert for chipbreaking machining comprising a pressed and sintered powder body having a top chip surface (2), a bottom surface (3), and at least one edge surface (4A-4D) interconnecting said top and bottom surfaces, said edge surface including a relief surface portion (8, 10) intersecting said top surface (2) at an acute angle to form therewith at least one cutting edge (6, 7). In order to eliminate every form of after-grinding in the immediate proximity of the cutting edges, the insert is characterized in that said edge surface (4A-4D) is provided with a recess (15) during the form-pressing step, said recess (15) intersecting the bottom surface (3). <IMAGE>
|
