A device for the chip removing machining of a work piece includes a body connectable to a holder or rotatable spindle. The body has at least one first seat to receive a cutting insert having a main cutting edge. The first seat has an active part including at least one first seat surface. The body receives the cutting insert in the first seat, the first seat including at least one location surface. The at least one location surface forms an angle with the first seat surface and positions the cutting insert axially and radially in the active part. The body has a second seat to receive a shim member such that the cutting insert adjoins the at least one first seat surface and the shim member. The cutting insert covers an area defined by the shim member and the at least one first seat surface.

An object is to provide a cutting insert for a milling cutter with which efficiency in machining can be increased. The cutting insert includes two polygonal main surfaces facing each other and side surfaces each connected to a corresponding side of each of the main surfaces. The side surfaces include a major side surface through which an attachment hole extends, a first minor side surface perpendicular to the major side surface, and a second minor side surface disposed between the first minor side surface and the major side surface. A ridge between each of the main surfaces and the major side surface forms a major cutting edge, and a ridge between each of the main surfaces and the second minor side surface forms a minor cutting edge. An angle between the major cutting edge and the minor cutting edge is 145 or larger.

A cutting tool and a cutting insert, each of which including a base surface and an anti-slip arrangement adjacent thereto. Each anti-slip arrangement includes an actuator surface and non-parallel first and second abutment surfaces, and the actuator surface of the cutting tool is a surface of a clamp of the cutting tool. The cutting insert is mounted on the cutting tool via engagement of the base surfaces thereof and the clamp is operable to bias the actuator surfaces against each other and thereby force the first and second abutment surfaces against each other, for preventing slippage of the cutting insert along the tool's base surface.

A cutting insert includes an insert body having a polygonal plate shape. Rake faces are formed on polygonal surfaces of the insert body, and flank faces are formed on lateral faces of the insert body arranged around the polygonal surfaces. Main cutting edges are formed on side ridges of the polygonal surfaces at intersecting ridgelines between the rake faces and the flank faces. Each main cutting edge extends between two corners adjacent to each other in a circumferential direction of the polygonal surface among corners of the polygonal surface. When seen from a direction opposing the rake face, one end portion of the main cutting edge that stretches to one corner of the two corners has a convexly curved shape, and the other end portion of the main cutting edge that stretches to the other corner of the two corners has a concavely curved shape.

A milling tool includes a body which is rotatable about a first axis. At least one cutting tooth mounted on the body having a cutting edge for cutting about the first axis. A wiper tooth extends from the mill body. The wiper tooth includes at least at a portion having a peripheral surface about the second axis and the peripheral surface intersects a face surface defining a cutting edge that is round about the second axis for cutting about the first axis. In some embodiments, the peripheral surface, the face surface and the cutting edge are formed on an insert that is mounted the mill body.

A cylindrical tool body has a peripheral surface provided with one or more spiral grooves extending from a base end side to a leading end side. The grooves each have a plurality of insert seats which are shifted relative to one another from the base end side toward the leading end side. The insert seats each have a bottom surface, a first side surface of length L1, and a second side surface of length L2. The first side surface faces the tool body's base end side, and the second side surface faces the tool body's leading end side and is located on the base end side with respect to the first side surface. In at least one insert seat located closer to the base end side than an insert seat located closest to the tool body's leading end side, the first side surface is longer than the second side surface.