PURPOSE: A machine tool, in which a drilling process of all places of the work can be performed at a time, and a different kind of processing is made capable without replacing a tool, and a composite processing is capable with the productivity improved.

CONSTITUTION: A ram device 23 is right-leftward shiftably supported by a cross slide 22 mounted to a column 20, and vertically shiftably provided with respect to the cross slide 22. In the ram device 23, is provided a turret head C in a capable manner of rotation index, and a multi-axial head with a plurality of, for instnce, drilling tools, tapping tools, etc., rotated by a power fed from the head C, and a drilling work is processed with a centering operated to the work fixed to a turn table 24. When in the work of drilling operation, the tapping tool works empty cutting.