A machine tool includes: a frame; a hollow ram disposed on the frame in a reciprocable manner; a hollow spindle to which a tool is mountable, rotatably supported by the ram, and having a lever hole penetrating the spindle in a radial direction and extending in an axial direction; a drawbar including a collet, reciprocate in the spindle, and urged toward a basal end of the spindle; a lever connected to the drawbar and extending radially outward of the spindle through the lever hole; a trigger fixed to the frame; a feed unit that reciprocates the ram, advances the ram toward a distal end to machine a workpiece, and retracts the ram toward a basal end to bring the lever into contact with the trigger for the drawbar to advance with respect to the spindle to open the collet.