Tool for chip removing machining, as well as a basic body and a cutting insert therefor

A basic body of a tool for chip removing machining, comprising:

• a seating that receives cutting inserts, which is delimited by a base surface and a rear support protruding in relation to the base surface, the base surface including a coupling section in the form of one or more ridges and grooves,
• wherein the rear support is formed at an acute angle (β) in relation to the ridges of the coupling section, and an imaginary extension of the ridges of the coupling section intersects with an imaginary extension of the rear support.

A basic body of a tool for chip removing machining, comprising:

• a seating that receives cutting inserts, which is delimited by a base surface and a rear support protruding in relation to the base surface, the base surface including a coupling section in the form of one or more ridges and grooves,
• wherein an imaginary extension of the ridges of the coupling section extends by the side of the rear support, and
• wherein the base surface includes a free surface in addition to the coupling section, the free surface tapers toward the end of an adjacent ridge that is situated closest to the rear support.

A replaceable cutting insert for a tool, the tool comprising a basic body, in which at least one seating is included, which is delimited by a base surface and a rear support protruding in relation to the base surface, the base surface including a first coupling section in the form of one or more ridges and grooves, wherein an imaginary extension of the ridges of the first coupling section intersects with an imaginary extension of the rear support, the cutting insert comprising:

• an upperside, an underside, and a clearance surface extending between the upperside and underside and transforming into the upperside via at least one cutting edge, the underside including a second coupling section in the form of a plurality of ridges which are spaced-apart by grooves, each ridge having a pair of opposite ends, wherein the ridges run at an acute angle (γ) in relation to the cutting edge.