Cutting insert for a turning tool and machining process with this cutting insert

摘要

The invention relates to a cutting tip for a machining tool, particularly a lathe, having a base body (11) which comprises a coupling part for attaching the cutting tip (7), said coupling part being positioned on a seat (5) on the front face of a shaft-like holder (1) which defines a longitudinal axis (3), wherein the coupling part comprises a fixing structure (13) which secures the cutting tip (7) against rotation about the longitudinal axis by means of the grip provided by associated surfaces (9) on the seat (5). The cutting tip also comprises a cutting body (21, 23) which protrudes radially from the periphery of the base body (11) with respect to the longitudinal axis (3), said cutting body (21, 23) having at least one cutting edge (25, 27) which works by means of rotation of the cutting tip (7) relative to the workpiece to be worked. The invention is characterized in that two radially protruding cutting bodies (21, 23) are present on the base body, offset peripherally relative to each other, and in that the cutting edges (25, 27) of said cutting bodies are oriented in such a manner that the entire cutting functions thereof are applied during the same rotation direction of the relative rotation.