Double - negative indexable Cutting insert with top surfaces in lateral projection and Cutting Tool

摘要

A double - negative indexable Cutting insert (14) which has an Axis Index (a) around which the insert non breaking, comprising: Two opposing Extreme surfaces (36),Each of which comprises at least a First Functional Surface (50); a Peripheral Surface (38) that extends between the extreme surfaces (36) and comprising at least two secondsAs functional surfaces (56); a Plane (P), located halfway between the extreme surfaces (36) and passing through the Peripheral Surface (38); and at least two b9ordes cuttingOpposing sides (46)Each of which is formed in a Union between the Peripheral Surface (38) and each of the extreme opposite surfaces (36); characterized in that the Peripheral Surface (38) iAnd at least one Convex projection (54),Spread each Second Functional Surface (56) at least one Extreme Surface (36) and the adjacent at least one projection (54); at least a projection (54) comprises two surfacesSIDE CAP (60) that converge out toward the median Plane (P); a ground view of each Surface (36), Extreme(54) the projection extends out from the Cutting insert (14); and in each cross section perpendicular to the Middle Plane (P),Whose cross section passes through two opposite side CUTS (46) and also through the at least one projection (54),No portion of the Peripheral Surface (38) is within an Imaginary line (L1) that connects the side Cutting edges (46) opposite.