| 摘要 |
An indexable cutting insert (K1) of a polygonal shape including a plurality of nose portions (2) formed at vertexes of the polygonal shape, respectively, a cutting edge (3 min ) formed between neighboring ones of the nose portions (2), a land portion (5) formed inside the cutting edge (3 min ) and a dimple formed, in the vicinity of each of the nose portions (2) and the land portion (5), inside each of the nose portions (2), with the cutting edge (3 min ) being inclined upwardly in a direction away from each of the nose portions (2). |
