Tool head

Tool head (10) that can be rotated around an axis of rotation (24), with a tool-holding fixture (14, 16) for a tool (20) having a cutting edge (18) and with equipment (36, 40, 44) to adjust the radial position of the tool edge (18) with regard to said axis of rotation (24), characterized by said tool-holding fixture being divided up into a base element (14), which is supported in a first bearing system (40) in a carrier sleeve (44) so as to be able to rotate around said axis of rotation (24), and into a tool-holding element (16) that is supported in a second bearing system (38) in the carrier sleeve (44) so as to be able to rotate around an eccentric axis (42) situated in an eccentric and parallel fashion to said axis of rotation (24), carrier sleeve (44) can be rotated around said axis of rotation (24), said axis of rotation (24) and said eccentric axis (42) lie on a guide line (52), said tool-holding element (16) and said base element (14) are coupled to each other through a radial guide (48, 50) in a manner that is secure against twisting and that permits motion along the guide line (52) in such a way that the distance between said tool-holding element (16) and said base element (14), and consequently between said axis of rotation (24) and said eccentric axis (42), changes by moving said carrier sleeve (44) around said axis of rotation (24).