Machine Tool Having a Workpiece Changing Device

A machine tool for machining workpieces, wherein the machine tool comprises at least one first spindle assembly having at least one working spindle on which a machining tool for machining workpieces can be mounted, wherein the machine tool comprises a work holding device for holding workpieces for workpiece machining by means of the machining tool, wherein the machine tool comprises a guide arrangement for the relative positioning of the work holding device holding the workpieces and of the first spindle assembly for workpiece machining, wherein the guide arrangement comprises a work holder guide for guiding the work holding device for a positioning of a work holder holding the workpieces relative to the first spindle assembly, and wherein the machine tool further comprises a loading and unloading device for exchanging workpieces at the work holding device, which loading and unloading device follows a positioning movement of the work holder while workpieces are being machined during the machining process by the respective machining tool, and which loading and unloading device is configured for exchanging at least one workpiece not being machined at the work holder while another workpiece held by the work holder is being machine by the first spindle assembly.