Cutting insert and chip-control arrangement therefor

摘要

A cutting insert has at least first and second side surfaces, with a chip-control arrangement. The chip-control arrangement includes at least one projection disposed at an intersection of a corner of the cutting insert. When the chip-control arrangement includes two projections they can be disposed symmetrically on both sides of the intersection. Each of the at least one projections is elongated and extends longitudinally along an associated side surface.

主权项

1. A cutting insert (20), comprising
opposing top and bottom ends (22, 24) and at least first and second side surfaces (26A, 26B) extending therebetween, a first insert corner (44A) comprising a corner cutting edge (54) formed at an intersection (56) of the first and second side surfaces (26A, 26B) and the top end (22), a land extending along the intersection at the top end, a chip evacuation surface extending at the top end, a chip deflecting surface (66) extending between the land (58) and chip evacuation surface (64), and a chip-control arrangement (60) at the first insert corner (44A);
the chip-control arrangement (60) comprising: a first projection (28, 128) which is elongated and disposed on the top end (22) adjacent to the intersection (56) and which extends longitudinally along the first side surface (26A) in a direction from the first insert corner (44A) toward an adjacent insert corner (44D); wherein at least a majority of the first projection (28) is located at the chip deflecting surface (66).