| 摘要 |
A cutting insert (21) includes a first surface (23) including a first rake surface (25), a second surface (27) including a second rake surface (29), a central axis (C) of the insert extending between the first and second surfaces, four side surfaces (33, 35, 37, 39) extending between the first surface (23) and the second surface (27), and four cutting edges (43a, 43b, 47a, 47b), each cutting edge having a first cutting edge component (431a, 431b, 471a, 471b) and a second cutting edge component (432a, 432b, 472a, 472b) and being associated with a respective one of the first and second surfaces (25 and 27) and with two respective ones of the side surfaces (33, 35, 37, 39). The first rake surface (25) is identical to the second rake surface (29) and the first rake surface (29) and the second rake surface (29) are oriented at a 90° angle to each other about the central axis (C) of the insert (21). |
