Machining center for the mechanical processing of workpieces

A machining center for the mechanical machining of workpieces, comprising:

• at least one processing unit, which has a tool slide that can be equipped with a machining tool for machining a workpiece arranged in a machining zone, and
• a workpiece positioning unit that can be equipped with a workpiece module for receiving the workpiece to be machined,
• wherein the tool slide is movable in one axis direction and the workpiece positioning unit is movable in the two other axis directions of a Cartesian coordinate system formed by three mutually perpendicular axis directions X, Y, Z, and wherein the workpiece module is rotatable about a first axis of rotation, wherein the workpiece module is releasably connected to the workpiece positioning unit via an interface device, allowing for an exchange of the workpiece module, wherein the interface device has a workpiece-positioning-side interface and a corresponding module-side counter-interface, wherein the workpiece module is selected from the group consisting of a clamping device workpiece module having the counter-interface for receiving and clamping the workpiece, wherein the clamping device workpiece module has clamping elements actuatable by means of working fluid for clamping the workpiece to be machined, and a rotary table workpiece module having the counter-interface, with at least one rotary table rotatable by means of an electric rotary drive about a second axis of rotation, to which a clamping unit for receiving and clamping a workpiece to be machined can be fastened, wherein optionally the clamping device workpiece module or the rotary table workpiece module can be fastened to the workpiece positioning unit via the interface device.