Patent ID: 9144850
Filing Date: 2015-09-29
Classification: B23C,Y10T

Abstract:
1. A cutting insert in a plate-like shape comprising: a top surface and a bottom surface having a substantially polygonal outer shape; at least four side surfaces extending between the top surface and the bottom surface; and a mounting hole passing through the top surface and the bottom surface, wherein, of at least four sides of the top surface corresponding to the at least four side surfaces, upper first and upper second short sides are formed to be non-parallel to each other and different in length from each other, and upper first and upper second long sides are formed to be non-parallel to each other and different in length from each other; wherein, of the at least four side surfaces, a first side surface corresponding to the upper first short side comprises a positive flank angle from the bottom surface toward the top surface; wherein, of the at least four side surfaces, a second side surface corresponding to the upper second short side comprises a positive flank angle from the top surface toward the bottom surface; wherein, of the at least four side surfaces, a third side surface corresponding to the upper first long side comprises a positive flank angle from the top surface toward the bottom surface; and wherein the second side surface includes a first and a second component surface connected with each other such that the side surface protrudes outwardly from a peripheral surface of the cutting insert, and a connection portion between the first and second component surfaces of the second side surface extends between the top surface and the bottom surface.