The cross joint milling machine KSF-2/E-4 is equipped with a convenient, menu-driven computer control. After entering the programs, cross joints for windows, doors, furniture, partitions, radiator covers, etc. can be realized with minimal setup and operation time. Using 3 special cutters that run and move simultaneously, the cross joint milling is computer-controlled. An additional groove unit mills the alternate groove from the front. The corresponding distances can be stored in 100 programs. The workpieces are fed automatically.