MACHINE TOOL HAVING A CHANGEOVER DEVICE AND A COMMUNICATION DEVICE

The invention relates to a machine tool (10; 210) for machining at least one workpiece (W), having a workpiece carrier (60) for carrying workpieces, and having a spindle arrangement (48; 248), which comprises at least one tool spindle (242) and is intended for machining at least one workpiece arranged on the workpiece carrier, wherein the workpiece carrier (60) and/or the spindle arrangement (48; 248) are/is configured in the form of a changeover device which has at least two interchangeable-element mounts (18, 19) for accommodating different interchangeable elements (15, 17), wherein the interchangeable elements (15, 17), in the case of the workpiece carrier, are different workpiece holders for retaining different types of workpiece or for retaining identical workpieces in different machining positions and, in the case of the spindle arrangement, are different machining tools (44) for workpiece-machining purposes, and wherein the interchangeable elements (15, 17) are provided for changeover by an operator. Provision is made for each interchangeable element (15, 17) to have an identification unit (50), which is configured for wireless communication and has an item of identification information (53, 54) which clearly characterizes the interchangeable element (15, 17), and the machine tool (10; 210) has a communication device (90, 190) for wireless communication with the respective identification units (50) and also has a control device (80) for controlling the machine tool on the basis of the items of identification information (53, 54) from the identification units and/or for transmitting the items of identification information from the identification units.