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 at least one working spindle a machining tool for machining workpieces can be mounted, wherein the machine tool comprises a work holding device including a work holder 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 at least one first spindle assembly for workpiece machining, wherein the guide arrangement comprises a work holder guide for linearly guiding the work holding device for a positioning of the work holder holding the workpieces relative to the at least one first spindle assembly, and wherein the machine tool further comprises a loading and unloading device for exchanging workpieces at the work holding device, wherein a control unit is configured to cause the loading and unloading device to follow a positioning movement of the work holder as the work holder is linearly guided by the guide arrangement while workpieces are being machined by the respective machining tool, and to cause the loading and unloading device to exchange, at the work holder, at least one workpiece not being machined while another workpiece held by the work holder is being machine by the at least one first spindle assembly.