| 摘要 |
A milling cutting insert comprises an upper side (2), a bottom side (3) and flank surfaces (4) connecting these two sides. At each operative cutting corner is a projection (17), which is depressed relative to the adjacent main cutting edge (5) and corner cutting edge (6). At the front upper edge of the projection is the wiper edge (16) that generates the surface on the workpiece. By tipping the cutting insert axially positively and radially negatively, the horizontally located wiper edge may be tipped frontwards into contact with the workpiece, while the vertically located wiper edge is tipped backwardly, so that it does not reach the workpiece. In this way an improved axial clearance is made possible and an undesired groove in the workpiece is avoided, which would otherwise be caused by the vertically located wiper edge.
|
