Machine tool for processing a workpiece and method for operating such a machine tool

A machine tool for processing a workpiece, the machine tool comprising:

• a processing station which has a tool receiving member, in which tool receiving member a processing tool for processing the workpiece can be introduced and replaced,
• a tool store which has at least one storage space for a processing tool,
• a tool handling device which can be moved by a controlled drive into a tool-transfer position,
• a movement unit which can move the workpiece and the tool store and which can be moved by a controlled drive into any of a setup position, a processing position, and a tool changing position,
• a control device for the drive of the tool handling device, which control device can define the tool-transfer position of the tool handling device, and
• a control device for the drive of the movement unit, which control device for the drive of the movement unit can define the setup position, the processing position, and the tool changing position of the movement unit,
• wherein
• when the movement unit is in the setup position and the tool handling device is in the tool-transfer position, a processing tool can be supplied to or removed from the at least one storage space of the tool store via the tool handling device,
• when the movement unit is in the processing position, the workpiece can be processed by a processing tool introduced into the tool receiving member of the processing station, and
• when the movement unit is in the tool changing position, a processing tool can be transferred from the at least one storage space of the tool store to the tool receiving member of the processing station, or a processing tool can be transferred from the tool receiving member of the processing station to the at least one storage space of the tool store,
• and wherein
• the control device of the drive of the movement unit is configured to define the setup position of the movement unit in a variable manner, and the control device of the drive of the tool handling device is configured to define the tool-transfer position of the tool handling device in a variable manner by
• the control device of the drive of the movement unit being configured to define the setup position of the movement unit
• as being at the processing position of the movement unit or, when the setup position is not located at the processing position, in such a manner that the time required for the movement of the movement unit between the setup position of the movement unit and the processing position is minimized, or in such a manner that the amount of the movement of the movement unit between the setup position of the movement unit and the processing position is minimized, or
• as being at the tool changing position of the movement unit or, when the setup position is not located at the tool changing position, in such a manner that the time required for the movement of the movement unit between the setup position of the movement unit and the tool changing position is minimized, or in such a manner that the amount of movement of the movement unit between the setup position of the movement unit and the tool changing position is minimized,
• and by
• the control device of the drive of the tool handling device being configured to define the tool-transfer position of the tool handling device in accordance with the setup position of the movement unit defined by the control device of the drive of the movement unit.