How is the ordinary car lathe screw?
so as to ensure the rigorous movement between the tool and the workpiece relationship.
so that the workpiece rotation and tool movement are driven by the spindle to achieve
By the screw and the slide plate on the opening and closing nut with the knife to move forward
The main action principle of the ordinary lathe screw: the spindle with the workpiece with the rotation, the movement of the dial by the exchange of gears into the feed box; by the feed box after the speed (mainly in order to obtain a variety of pitch) and then to the screw
