The inventive machine tool (10) has a machine frame (59) and a spindle nose (12) arranged on said frame. The spindle nose (12) can travel in a horizontal plane (X/Y) to any chosen point to machine a workpiece (54). Two variable-length structures are mounted at a distance from each other on the machine frame (54), in such a way that they can each swivel around one vertical axis (16, 17) and on the spindle nose (12) in such a way that they can each swivel around another vertical axis (23), towards each other.