| 摘要 |
A single- sided tangential cutting insert (10) has a peripheral side surface (16) with N identical major sides (18). The cutting insert (10) has 360°/N rotational symmetry about an insert axis (A) passing through top and bottom surfaces (12, 14) of the insert (10), where N is an integer greater than 2 and each major side (18) is located between and merges with an adjacent major side (18). A cutting edge (20) is formed at the intersection of a relief surface (22) and a rake surface (24, figure 2). The rake surface (24) is located in the peripheral side surface (16) and extends in an inward direction of the cutting insert (10) from its associated cutting edge (20) to a side surface (44) of the associated major side (18). At least a portion of the relief surface (22) is located in the top surface (12).
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