Abstract: A machine for milling a tenon to the straight end of wooden workpieces, like a strip or a beam, wherein two wooden workpieces disposed upon two sledges or tables moving in transverse position to and fro in between abutments, are milled one after another in one single pass through the machine by means of a driven cutter carried upon a support structure which periodically performs a revolving movement over 180.degree., each time said cutter reaches a side face of the tenon to be produced, said pivotal movement being initiated by a signal from a pulse transmitter cooperating with the sledge or table such that said signal is dependent upon the position of the relative sledge, and so that said cutter always cuts toward the tenon being cut.