Method for machining work pieces with a machining center, wherein the machining center comprises: - a control unit for controlling or adjusting the machining center, - at least one machining area in which a machine tool is arranged which has a first work spindle (24 1) for machining a first work piece (38 1) and a second work spindle (24 2) for the clamped machining of a second work piece - at least one clamping system which comprises clamping means, with which at least the first and the second work pieces (38 1, 38 2) can be clamped into the clamping system for machining, and - a displacement track which extends linearly at least within the machining area and along which the at least one clamping system is moveably arranged, and the method comprises the following steps: - providing the control unit with target dimensions for the first and the second work pieces (38 1); - generating first correction data for the first work piece (38 1) and second correction data for the second work piece (38 2) and providing the control unit with the correction data, wherein - either the first correction data are generated based on a machining of a first reference work piece (38 R1) and the second correction data are generated based on a machining of a second reference work piece (38 R2) for each employed clamping system with the aid of a clamping means measurement device, or - the first correction data are generated based on a determination of the actual dimensions of the machined first work piece (38 1) and the second correction data are generated based on a determination of the actual dimensions of the machined second work piece (38 2) with the aid of a clamping means measurement device; - clamping the first work piece (38 1) and the second work piece (38 2) into the clamping system by means of the clamping means; - simultaneous machining of the first work piece (38 1) with the first work spindle (24 1) and of the second work piece (38 2) with the second work spindle (24 2), taking into consideration the target dimensions; - specifying, with the use of the control unit, either the first work spindle (24 1) or the second work spindle (24 2) as a finishing machining spindle; - finishing of the first work piece (38 1) with the finishing machining spindle, taking into consideration the first correction data; and - subsequent finishing of the second work piece (38 2) with the finishing machining spindle, taking into consideration the second correction data, wherein the first work piece (38 1) and the second work piece (38 2) are shifted along the displacement track relative to the first and second work spindles (24 1, 24 1) by means of the clamping system during the machining and during the finishing. - a control unit for controlling or adjusting the machining center, - at least one machining area in which a machine tool is arranged which has a first work spindle (24 1) for machining a first work piece (38 1) and a second work spindle (24 2) for the clamped machining of a second work piece - at least one clamping system which comprises clamping means, with which at least the first and the second work pieces (38 1, 38 2) can be clamped into the clamping system for machining, and - a displacement track which extends linearly at least within the machining area and along which the at least one clamping system is moveably arranged, and - providing the control unit with target dimensions for the first and the second work pieces (38 1); - generating first correction data for the first work piece (38 1) and second correction data for the second work piece (38 2) and providing the control unit with the correction data, - either the first correction data are generated based on a machining of a first reference work piece (38 R1) and the second correction data are generated based on a machining of a second reference work piece (38 R2) for each employed clamping system with the aid of a clamping means measurement device, or - the first correction data are generated based on a determination of the actual dimensions of the machined first work piece (38 1) and the second correction data are generated based on a determination of the actual dimensions of the machined second work piece (38 2) with the aid of a clamping means measurement device; - clamping the first work piece (38 1) and the second work piece (38 2) into the clamping system by means of the clamping means; - simultaneous machining of the first work piece (38 1) with the first work spindle (24 1) and of the second work piece (38 2) with the second work spindle (24 2), taking into consideration the target dimensions; - specifying, with the use of the control unit, either the first work spindle (24 1) or the second work spindle (24 2) as a finishing machining spindle; - finishing of the first work piece (38 1) with the finishing machining spindle, taking into consideration the first correction data; and - subsequent finishing of the second work piece (38 2) with the finishing machining spindle, taking into consideration the second correction data,