Abstract: A machine tool and method for machining a workpiece into a finished part in which the workpiece is damped into a machine tool and is machined in a material-removing fashion with a tool that has a geometrically defined cutting edge and is fastened to a multiaxially mobile tool holder of the machine tool. In order to ensure the maximum dimensional and size accuracy in the finished part, it is proposed that the workpiece, after its material-removing machining and in the same clamping set-up used for the latter, is incrementally cold forged in at least some regions with the aid of a forging tool to produce the finished part.

Abstract: The invention relates a method for reducing the eccentricity of the inner and outer surface (7, 9) of a hollow workpiece (i), for example a hollow shaft, rotatably clamped in machine tool (2), in which in one clamping a plurality of measurement data depending on the contour of the inner surface (7) of the hollow workpiece (i) are recorded, for example with the aid of ultrasound, using the recorded measurement data a desired surface (13) is calculated for at least a part of the outer surface (9), which has a reduced eccentricity with respect to the inner surface (7) and in a further step the rotating workpiece (i) is at least partially machined at the outer surface (9) thereof according to the desired surface (13).

Abstract: The invention relates a method for reducing the eccentricity of the inner and outer surface (7, 9) of a hollow workpiece (1), for example a hollow shaft, rotatably clamped in machine tool (2), in which in one clamping a plurality of measurement data depending on the contour of the inner surface (7) of the hollow workpiece (1) are recorded, for example with the aid of ultrasound, using the recorded measurement data a desired surface (13) is calculated for at least a part of the outer surface (9), which has a reduced eccentricity with respect to the inner surface (7) and in a further step the rotating workpiece (1) is at least partially machined at the outer surface (9) thereof according to the desired surface (13).