Patent ID: 9108249
Filing Date: 2015-08-18
Classification: B23B,Y10T

Abstract:
1. A cutting insert for use in a drilling tool, the cutting insert comprising: two end faces disposed perpendicular to an insert axis and a plurality of side walls connecting the end faces, wherein supporting surfaces for bearing against corresponding mating supporting surfaces of a cutting insert receptacle of the drilling tool are formed on at least two of the side walls arranged in a rear region of the cutting insert, wherein a main lip for machining a workpiece to be drilled is formed on at least one side wall arranged in a front region of the cutting insert, wherein the side walls having the supporting surfaces are arranged in such a way that the cutting insert can be inserted into a trigon cutting insert receptacle in an accurately fitting manner, characterized in that the side wall having the main lip or the side walls having the main lip is/are oriented asymmetrically, such that an internally cutting end of the main lip is arranged at a greater distance from the insert axis than an externally cutting end of the main lip, and wherein the main lip is formed from two rectilinear bisectors, between which an obtuse bisector angle is formed.