DOUBLE-SIDED CUTTING INSERT HAVING HIGH FEED RATE AND CUTTING TOOL EQUIPPED THEREWITH

摘要

The technical objective of the present invention is to provide a double-sided cutting insert having a high feed rate, which can increase the edge strength such that the same is suitable for high feed rate processing, and which can reduce the cutting load. To this end, a double-sided cutting insert having a high feed rate according to the present invention comprises: two main surfaces that face in opposite directions; two short-portion side surfaces, which connect between the two main surfaces, and which face in opposite directions; two long-portion side surfaces, which connect between the two main surfaces and between the two short-portion side surfaces, which face in opposite directions, and the width of which is larger than that of the short-portion side surfaces; and a fastening hole that extends through the two long-portion side surfaces such that a cutting tool fastening bolt is inserted therein, wherein the double-sided cutting insert having a high feed rate comprises a short-portion cutting edge provided on a boundary portion between each of the main surfaces and each of the short-portion side surfaces, a long-portion cutting edge provided on a boundary portion between each of the main surfaces and each of the long-portion side surfaces, and a corner cutting edge that connects between the short-portion cutting edge and the long-portion cutting edge, and the short-portion cutting edge has a curved shape that is outwardly convex, when the same is viewed towards the main surfaces.