Patent ID: 8043031

Claim:
A multi-function cutting tool, comprising: a cutting insert, including an upper surface, a lower surface, first cutting edge corner parts and second cutting edge corner parts, which are provided on respective corners of the upper surface such that the upper surface has a symmetrical structure with respect to a diagonal direction; a major cutting edge part provided between each of the first cutting edge corner parts and one second cutting edge corner part, and a first minor cutting edge part and a lowered cutting edge part provided between each of the first cutting edge corner parts and the remaining second cutting edge corner part; and a cutter body for supporting the cutting insert thereon, wherein the major cutting edge part has a downwardly inclined angle ranging from about 3° to 10°, and extends from the first cutting edge corner part towards the corresponding second cutting edge corner part, and, when seen in a front view of the cutting insert, the major cutting edge is defined by a convex curved line, which has a curvature radius of 1000 mm or more, the cutting insert further including a second minor cutting edge part provided between the major cutting edge part and the second cutting edge corner part.