Longitudinal and cross feeds are effected by ball lead screws, driven by servo motors; Either vertical or horizontal 4-station or 6 station tool post or gang tools can be selected; The post is located in precision contrite gears with a high repeated positioning accuracy; Both chuck and tail stock are supplied with hydraulic or manual type; The surface of the bed ways is supersonic frequency hardened and precision ground with a long service life; The spindle system is high in the stability and accuracy; Mainly used for turning inner and outer cylindrical surface, end surface, taper surface, arc surface and thread of shaft, etc., with high efficiency and accurate processing; The bed way has been finely grinned after ultra-tone quenching; It is applied to various line like automobile, valve, electric tools and hardware, etc.