Abstract: A machine tool includes a base, a traveling plate to which a tool is to be attached, plural rods, and plural drive mechanisms fixed to the base. Each of the drive mechanisms is provided with a slide table movable on the drive mechanism and with an actuator for moving the slide table. One end of each of the rods is swingably connected to the corresponding slide tables through a first joint and the other end of each of the rods is swingably connected to the traveling plate through a second joint. Each of the first and the second joints include two rolling elements, each of which is rotatably supported by a rolling bearing to swing the rod.As the rolling elements are supported by the rolling bearings without a clearance, the positioning accuracy of the machine tool is enhanced.

Abstract: A machine tool of the present invention includes a base fixed to an outside fixed portion, a travelling plate to which a tool is to be attached, plural guide portions radially outwardly fixed to the base at a predetermined angle, and plural rods. Each of the plural guide portions is provided with a slide table movable in a longitudinal direction of the guide portion and an actuator for moving the slide table. One end of each rods is connected with one of the slide tables through first joint means and another end of each of the rods is connected to the traveling plate through second joint means.