Abstract: The milling head (1) comprises:a principal body (2),an interposed piece (5), which is mounted to rotate on the principal body (2) and which is equipped with a first crown gear (12a),means for driving and for blocking in rotation the interposed piece (5) with respect to the body (2),a spindle-holder (3), which is mounted to rotate along axis XX' with respect to the interposed piece (5), on which is fixed a second crown (12b) adapted to mesh with the first crown (12a), and which is mobile in translation along axis XX' between a position of blockage in rotation in which the crown gears (12a, 12b) mesh in one another, and a position of setting in rotation in which the two crown gears (12a, 12b) are out of mesh,means (13) for setting in translation the spindle-holder (3) between the positions of blockage and of setting in rotation,and means (17, 18, 19) for setting in rotation the spindle-holder (3) along axis XX'.