Cutting insert for grooving and profiling

A cutting insert for grooving and parting as well as profiling and longitudinal turning of metallic workpieces, comprising a shaft part and at least one cutting head, a front end surface at a front end of the cutting insert, and a rear end surface at a rear end of the cutting insert, wherein the shaft part comprises a top side, a bottom side, and side surfaces extending between said top and bottom sides, said cutting head carrying a cutting edge defined by an intersection between a chip side and a clearance side of the cutting head, the cutting edge having a circular shape and a substantially constant curvature between opposite ends thereof, the chip side of the cutting head provided with a first chip-forming device placed immediately inside the cutting edge, the chip side of the cutting head further having a second chip-forming device located symmetrically around a center line of the cutting insert and comprising:

• a chip-breaking depression disposed inside of the first chip-forming device except for a tip portion of the depression which extends along the center line up to the cutting edge, and
• a ridge bordering a rear part of the chip-breaking depression.