The invention relates to a machine tool for the machining of a workpiece by means of a tool, wherein the machine tool is designed to clamp the tool for the machine-controlled machining within a machining program on the work spindle and to clamp the tool on the machine bench of the machine tool, characterized by a tool magazine which can be secured on the machine bench, on which a tool or a plurality of tools may be clamped individually in a replaceable manner.