FIELD: turning; drilling.
SUBSTANCE: group of inventions relates to the processing of materials by cutting and can be used in cutting tools with indexable cutting inserts. Cutting insert comprises two cutting protrusions extending from opposite end surfaces towards a mid plane, each cutting protrusion having a rear surface, oppositely facing a relief surface and a rake surface, at the intersection of which the main cutting edge is formed. Edge projection is formed by a line connecting longitudinal projections of the main cutting edge ends of each main cutting edge. Edge projections of both of the main cutting edges form a non-zero first angle therebetween. Rake surfaces of the cutting protrusions are located on longitudinally opposite end surfaces of the cutting insert. Two clamping recesses and two abutment recesses serve as contact surfaces for clamping the cutting insert in an insert pocket of a cutting tool.
EFFECT: providing reliable clamping of the cutting insert in the slot for the insert.
19 cl, 11 dwg
