Abstract: The invention discloses a machine tool for machining workpieces comprising a frame by means of which a working space is delimited and by which accommodating compartments are formed in which a first machining module and a workpiece carrier are retained, wherein predominantly the workpiece carrier is movable along at least one guide, especially an X and/or Y and/or Z guide, for machining the workpieces. The first machining module of the machine tool includes at least five tool spindles which, or rather the tools of which, simultaneously can be engaged in a respective one of the workpieces.

Abstract: Workpieces to be machined by a machine tool are taken from pallets by a loader-unloader, which subsequently deposits the machined workpieces on pallets. To simplify the handling of the pallets and to reduce the nonproductive times, a pallet support is provided with a first stack station for supporting a stack of pallets carrying workpieces to be machined and with a second stack station for supporting a stack of pallets for receiving machined workpieces. The loader-unloader is operable to lift an empty pallet from the top of the first stack and to transfer said empty pallet to the second stack station.