| 摘要 |
The invention relates to a double-sided, indexable milling insert having a round basic shape defined by an imaginary cylinder, which is concentric with a centre axis (C2) and extends between two reference planes that extend perpendicular to the centre axis and are equidistantly separated from a neutral plane (NP), the milling insert comprising a pair of opposite chip faces, which are located in said reference planes (18a, 18b) and between which an envelope surface (19) concentric with the centre axis extends, a plurality of identical and alternately usable cutting edges (20) along the peripheries of the chip faces, as well as lock means (28, 29) for rotationally securing the milling insert in one of several predetermined index positions. According to the invention, the individual cutting edge (20) has the shape of a wave trough subsiding from a reference plane, when the milling insert is regarded in side elevation, and includes two edge segments (22, 23), which transform into each other via a bottom point (24) and a primary one (22) of which is longer than a secondary one (23) and falls toward the bottom point (24) at a slope angle that is smaller than an analogous slope angle at which the secondary edge segment (23) falls toward the bottom point. In addition, the invention relates to a milling tool that has been equipped with the milling insert in question. |
