Abstract: A lathe system includes a spindle capable of gripping a bar and moving back and forth in an axial direction of the bar and a tool post to which a first tool is attached. The lathe system can manufacture a plurality of products having an identical shape from the bar by repeating a machining of the bar, a cutting off of a machined portion of the bar, and a grip change by the spindle, the grip change by the spindle comprising releasing the bar, moving back, and re-gripping the bar at a predetermined gripping position. The lathe system further includes a gripping position selecting unit capable of selecting a special gripping position at which the spindle re-grips the bar when a state of the machine tool system meets a predetermined condition, the special gripping position being different from the predetermined gripping position.

Abstract: A machine tool system capable of decreasing the operator's burden in setting the parameters. A machine tool system includes a working machine capable of machining a bar and a bar feeder capable of delivering the bar to the working machine according to the machining of the bar. The bar feeder delivers the bar in accordance with a set parameter. The bar feeder updates the parameter according to parameter information transmitted from the working machine.

Abstract: A machine tool system of the present invention includes a rotatable spindle capable of releasably gripping a bar, a pusher that biases the bar from a rear end thereof toward a front end thereof to be movable together with the bar in a Z1-axis direction thereof, and an abnormality determining unit that determines whether an abnormality occurs by monitoring movement of the pusher in the Z1-axis direction. The spindle is movable in the Z1-axis direction, and the abnormality determining unit determines that a first abnormality occurs when the moving distance of the spindle differs from the moving distance of the pusher in a state that the spindle grips the bar.

Abstract: A machine tool capable of preventing production of a defective product. The processing unit determines whether the workpiece exists in the predetermined area. In the event that the workpiece exist in the area, the processing unit execute the top cut process. In the event that the workpiece does not exist in the area, the processing unit determines that the workpiece is in the abnormal position.