| 摘要 |
A cutter insert (3), particularly intended for use as a corner milling cutter (milling tool 1), includes, as viewed in top plan view, a quadrilateral (for example, rectangular or rhomboid) base body. The preferably planar side surfaces (31 to 34) of the base body are parallel to a bore axis (39) of its securing bore (41) and/or perpendicular to a central plane (46) passing through the center of gravity of the base body (27). The base surface (29) and the top surface (28) are of identical shape and are rotationally symmetrical to one another and slope downward toward a trough extending obliquely in the base surface (29) and the top surface (28), respectively. The troughs intersect one another at an acute angle .beta.. The peripheral cutting edges (35, 42, 36, 43) which pairwise border the same side surfaces (31 and 33, respectively), are preferably straight and are arranged parallel to one another. A reversible cutter insert is obtained which may be used in four different installed orientations and thus has four different cutting edges or cutting edge pairs. The cutter insert (3) has an overall negative base shape, and results in all installed positions in a positive axial rake angle and a positive radial rake angle. |
