Abstract: A machine tool for triaxial machining of work pieces with a machine rack. Couplers run on slewable bearings and being adjustable in an X-Y plane. These couplers are joined with a hinge. The machine tool is equipped with a tool carrier arranged at one coupler. The tool carrier is provided with a skid independently movable in X-Y-plane. The machine tool is equipped with independent drives for adjustment of the couplers. The machine tool which distinguishes itself by a simple and compact structure as well as by high stiffness of the coupler system in that at least two couplers (8,9) are run on bearings at two skids (4,5) which are adjustable in rack-proof guides by the aid of one drive each. The guides are mainly arranged in parallel to each other and with the couplers—if viewed in the projection on a X-Y plane—lying between the guides.