| 摘要 |
<p>The present invention relates to an indexable cutting insert for chip removing machining having a polygonal body (1) having opposed lower (11) and upper (12) faces that are mutually interconnected by peripheral faces (13) meeting at rounded corners (131), which are created symmetrically with respect to upper face (12) bisectors (121), whereas the upper face (12) comprises a mid portion (122), which is positioned inside of a chip face (123), intersections of said chip face (123) and said peripheral face (13) forming major cutting edges (3) and corner cutting edges (4), said chip face (123) comprising a row of protrusions (5). A pair of oblong corner protrusions (6) are provided at each corner area of the chip face (123), said pair being located symmetrically with respect to an associated bisector (121) of the upper face (12). Each said oblong corner protrusion (6) has a longitudinal axis (L1,L2) and at least two peak areas (61, 62). Said peak areas (61, 62) are positioned in line essentially on the longitudinal axis (L1,L2) of each oblong corner protrusion (6).</p> |
