Patent ID: 7578638

Claim:
A cutting tool comprising: a basic body and a plurality of cutting inserts arranged in series one after the other, each insert including a topside, an underside, two opposite side surfaces, front and rear ends, and a cutting edge adjacent to the front end, wherein the rear end of a first cutting insert faces the front end of a second cutting insert disposed rearward of the first insert, and a chip space forward of the cutting edge of the second cutting insert is delimited by a chip-forming surface extending in the forward direction from the rear end of the first cutting insert, and a chip-forming surface extending downward from the cutting edge of the second cutting insert, the chip-forming surface extending in the forward direction from the rear end of the first cutting insert having a plane part surface and a concave part surface, the concave part surface being determined by an arc line, which has a lowest bottom point situated at a distance (A) from the rear end of the first cutting insert, the chip-forming surface extending downward from the cutting edge of the second cutting insert having a plane part surface and a concave part surface.