| 摘要 |
<p>The invention relates to an indexable end-milling insert of the type that comprises an underside (14), an upperside (13) and a plurality of cutting edges that are formed between the upperside and a number of clearance sides and include a chip-removing main edge (18) as well as a surface-wiping wiper edge (19). The cutting insert has a square basic shape and includes four main edges (18) and four wiper edges (19) that are countersunk to a lower level than the main edges. The wiper edge (19) is included in a lip (31) projecting in relation to a secondary clearance surface (26) and having a tertiary clearance surface (32), which laterally transforms into a primary clearance surface (22). Said primary clearance surface (22) has a width that decreases from the two opposite ends (38, 39) thereof toward a section (40) having a smallest width therebetween.</p> |
