Patent ID: 7537419

Claim:
Cutting tool comprising a part having an insert seat as well as a cutting insert detachably connected in the same, which insert comprises a first serration connecting surface, which is formed of ridges spaced-apart by grooves, which ridges are arranged to engage grooves existing between ridges in a second serration connecting surface serving as insert seat in said tool part, wherein, in one of said serration connecting surfaces, at least one enlarged ridge is arranged between two spaced-apart fields, wherein the two spaced-apart fields each comprises a plurality of ridges of a second size, the second size being different than a size of the at least one enlarged ridge, wherein the enlarged ridge is arranged to engage a correspondingly enlarged groove in the other of said serration connecting surfaces, wherein the enlarged ridge is oriented parallel with the plurality of ridges in the two spaced-apart fields, wherein the first serration connecting surface is on a bottom side opposite a top side and adjacent a clearance surface of the cutting insert, and wherein the cutting edge of the cutting insert is the edge where the top side and clearance surface intersect.