Cutting bits for finishing works especially for bores

摘要

Proposed is a cutting bit, designed as a symmetric polygon, for finishing work, especially for bores, having cutting edges which run rectilinearly, serve as cutting edges forming main and secondary cutting edges and are arranged in a common plane, and also having a prominence which starts at rake faces of the cutting edges and whose flanks serve as ground-in chip breakers, the cutting edges adjacent to ground-in chip breakers merging into one another and forming an inclined edge which falls in the direction of the common plane, which cutting bit is distinguished by the fact that the ground-in chip breakers (5) are concavely arched as viewed in each case from the associated cutting edges (4), and that the inclined edge (10), in the area of the intersection (11) of two cutting edges (4), passes directly from the cutting edges into the rake face (8). IMAGE