FIELD: processing of materials by cutting.
SUBSTANCE: group of inventions can be used in milling slots and ledges, as well as in milling at angle of end mills of small diameter. Indexable cutting insert has first angular edge made with possibility of cutting edge leading edge formation, most distant in direction of axis of rotation of end mill, receiving plate. Main cutting edge is directed downward, approaching the lower surface of the plate along its length from the first angular edge. Auxiliary cutting edge extends from first angular edge and is directed downwards from point of cutting edge, most distant from lower surface, to inner angle of plate and has length, making 80–95 % of length of main cutting edge, including second angular edge, on the side of cutting plate.
EFFECT: high-efficiency treatment is provided.
15 cl, 7 dwg
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