Patent ID: 9623496
Date: 2017-04-18
CPC Classifications: B23C,Y10T

Claim:
1. A cutting insert for slot milling, wherein a plurality of cutting inserts are provided in a circumference of a slot milling cutter body, one of every two cutting inserts is protruded to one side surface of the milling cutter body, the remaining one is protruded to an opposite side surface of the milling cutter body, and the every two cutting inserts are formed in different structures to be prevented from being erroneously mounted in an insert mounting seat provided in each of both side surfaces of the milling cutter body; wherein the cutting insert has an insert groove on a bottom mounting surface that contacts with the insert mounting seat of the milling cutter, and the insert groove is formed in a polygonal groove shape; wherein a polygonal seat protruded member is protruded to an upper portion on an insert mounting seat of the milling cutter so as to be inserted into an insert groove having the polygonal groove shape; and wherein a first insert groove of a first cutting insert protruded to one side surface of the milling cutter body and the polygonal shape of the seat protruded member corresponding to the first insert groove differ from a second insert groove of a second cutting insert protruded to an opposite side surface of the milling cutter body and the polygonal shape of the seat protruded member corresponding to the second insert groove.