Because the two-way movement of CNC lathe tool rest is driven by two servo motors, the transmission chain is short. Without the use of hanging wheel, light bar and other transmission parts, the servo motor is directly connected with the lead screw to drive the tool carrier movement. The lead screws of the servo motor can also be connected with a synchronous belt pair or a gear pair.

Multi-function CNC lathe spindle using DC or AC spindle control unit to drive the spindle, according to the control instructions for infinitely variable speed, between the spindle does not need a multi-stage gear pair for speed. In order to expand the transmission range, it is now generally necessary to use a first gear pair, CNC machine tool assembly and maintenance to achieve the segmented CVT, even so, the structure of the head box is much simpler than that of the ordinary lathe. Another structural feature of NC lathe is high rigidity. It is designed to match the high precision control of the control system and adapt to the high precision machining.

The third structural feature of CNC lathe is light drag. The tool rest movement generally adopts the lead screw pair. Ball screw pair is one of the key mechanical parts of CNC lathe. The rotating bearing installed on both ends of the ball screw is a special uranium bearing, whose pressure Angle is far greater than the commonly used centripetal ball car bearing. The installation and installation of the special bearing of the five-axis CNC machine tool are optional. It is better to be paired when the bearing leaves the factory.

In order to facilitate the towing, the lubrication on the CNC lathe is relatively sufficient, most of the oil mist automatic lubrication. Due to the high cost of CNC lathe and long life of control system, the sliding guide rail of CNC lathe also needs good wear resistance. CNC lathes are generally equipped with steel guide rail, so that the accuracy of the machine tool to maintain a longer time, its service life can also be greatly extended. Another characteristic of CNC lathe is sufficient processing cooling, more strict protection, automatic operation of CNC machine tool development trend is generally in a completely closed or semi-closed state.

CNC lathes are generally equipped with automatic chip removal device.