BILATERAL CUTTING INSERT Russian patent published in 2016 - IPC B23C5/20 

FIELD: process engineering.

SUBSTANCE: invention relates to machine building and may be used for face cutting of metals. Claimed insert includes the first and second cutting edges with alternating the primary and auxiliary cutting ribs, each extending between the insert working and idle cutting tops. Every primary cutting rib, starting from the first distance measured from the principal plane nearby the working cutting top, extends with a gradual decreased to smaller, second distance measured from the principal plane nearby the idle cutting top. Every end of the auxiliary cutting rib adjoining the working cutting top is spaced from the principal through larger distance than the other end of the auxiliary cutting rib. Every circumferential side surface features the open flat auxiliary surface directly abutting on said auxiliary cutting rib. Every auxiliary cutting rib features convex shape at least on several sections on top view of appropriate surface.

EFFECT: efficient use of inserts, higher surface quality.

11 cl, 9 dwg