| 摘要 |
<P>PROBLEM TO BE SOLVED: To maintain the favorable surface roughness of a vertical cutting insert for corner-cut milling even if a use condition such as tool feed is raised. <P>SOLUTION: The vertical indexable cutting insert uses vertically long side faces 4 as rake faces, long sides of the side faces as main cutting edges 6, upper faces 2 or lower faces 3 as flanks of the main cutting edges, short sides of the side faces 4 as sub-cutting edges 7, and end faces 5 as flanks of the sub-cutting edges. The vertical indexable cutting insert is constituted so that the short sides of the side faces 4 forming the rake faces are bilaterally asymmetric, and a part of each short side is used as the sub-cutting edge 7. The sub-cutting edges 7 are continued to tips of the main cutting edges 6 via a nose R part 8 in a side-face view of the insert, the end faces 5 include first faces 5a being the flanks of the sub-cutting edges 7 and flat and reversely-rectangular second and third faces 5b, 5c, and the first faces 5a extend to diagonal directions of the end faces. <P>COPYRIGHT: (C)2013,JPO&INPIT |
