A machine tool for surface machining of disk-shaped elements, comprising a stationary table (2) which defines a median working plane (À), means (3) for removably locking one disk-shaped element (D) at a time, drive means (4) for moving the disk-shaped element (D) between a start position outside the working area and an operating position and vice versa, at least one pair of working tools (5', 5") rotatable about respective rotation axes (X 2 , X 3 ) and having respective operating surfaces (6', 6") for acting upon the disk-shaped element (D). The rotation axes (X 2 , X 3 ) are rotatably supported on second support axes (Y 2 , Y 3 ) for changing the tilt (±) of the working tools (5', 5") relative to the median plane (À) and adjusting the angular position of the operating surfaces (6', 6") relative to the opposite faces (S', S") of the disk-shaped element (D).