One kind of three blades and grooving cutter assembly of the blade

The present invention discloses a three grooving blades and cutter assembly of the blade, the blade includes three grooving insert body; the blade relative to the blade body having a central body outwardly projecting three cutting head, located the central body portion of the blade connector, and an elongated transition between the cutting head and the connecting portion; the three cutting head are respectively provided with the chip breaker, and the flank of the cutting edge, the cutting edge is broken and flutes formed in the rear flank faces intersect; includes the cutting edge at the outer surface of the cutting head along the main cutting edge and arranged on both sides of the left main cutting edge, right edge; three cutting head midpoints of each major cutting edge forms a regular triangle. The present invention can effectively prevent axial movement of the blades occurs at the shank to achieve a close fit of insert and tool holder, eliminating the risk of the inner circumferential vertical blade twist, so that the tool can remain stable during the cutting process cutting .