Patent ID: 7390149

Claim:
A tool for chip removing machining, comprising: a basic body and a replaceable cutting insert that includes a topside, an underside, and a side surface extending therebetween, the side surface including a clearance surface, the insert being detachably mounted in an insert seat formed in the basic body, the seat being delimited by a bottom surface and at least one side support surface, the cutting insert including an out of round engagement surface as part of the side surface that is pressed against an out of round shoulder surface to rotationally secure the cutting insert, an upper part of the side surface of the cutting insert being supported by the side support surface, wherein the shoulder surface is included in a front portion of a separate lock plate, a rear portion of which is inserted and secured in a slot formed in the basic body which opens towards the insert seat at the side support surface and the bottom surface of the insert seat such that the lock plate rotationally secures a lower part of the side surface of the cutting insert.