| 摘要 |
<p>A cutting insert (10) having two end portions (12', 12') and an intermediate portion (14) extending longitudinally between the two end portions (12', 12'). The intermediate portion has N side surfaces (20) and N primary cutting edges (22). The N primary cutting edges (22) are formed at the intersection of adjacent side surfaces (20). Each one of the N primary cutting edges (22) extends from one end portion to the other end portion. At least N secondary cutting edges (28', 28') formed on at least one of the two end portions (12', 12'). A cutting corner (30', 30') is formed between a primary cutting edge (22) and a secondary cutting edge (28', 28'). Each secondary cutting edge extending away from the cutting corner in a direction generally away from the intermediate portion (14).</p> |
