Lathe tool, in particular boring tool

A rotating boring tool for machining comprising a receiving part and a front part which extend along a center axis and can be detachably fastened to one another via a driver connection, wherein the driver connection comprises at least two coupling pairs separate from one another about the center axis and arranged eccentrically with respect to the center axis, wherein each coupling pair is formed by interlocking coupling elements, namely a receiving pocket and a driver pin, wherein the driver pin has wall regions therearound,

• a) wherein the coupling elements are designed in such a way that the receiving part and the front part are oriented in alignment with one another via the coupling elements when said receiving part and said front part are fitted together,
• b) wherein the pin and pocket of each coupling element have an asymmetrical cross-sectional area and widen with increasing distance from the center axis,
• c) wherein the pins and pockets of the coupling elements, for assembly, have clearance relative to one another and different cross-sectional geometries in such a way that each pin is radially clamped against a pocket and loaded only in a tangential direction during a relative rotation of the coupling element,
• d) wherein in the clamped position, the two parts are self-centered;
• and
• e) wherein the driver pin wall regions closest to the center axis oppose one another and define a gap therebetween.