【正文】 n thorough settlement main axle highspeed operation transmission and so on leather belt and band pulley vibrations and noise uses electricity the main axle structure to be possible to enable the main axle rotational speed to achieve above 10000r/min. The straight line motordriven speed is high, adds the moderating properties to be good, has the superior response characteristic and the followed precision. Made the servo with the straight line electrical machinery to actuate, to omit the ball bearing guide screw this intermediate drive link, eliminated the transmission gap (including reverse gap), the movement inertia was small, the system rigidity was good, could locate precisely under high speed, thus increased the servo precision enormously. Straight line trundle guide rail, because it has respectively to the gap for the zero and the extremely small rolling friction, wears slightly, gives off heat may ignore, has the extremely good thermostability, increased the entire journey pointing accuracy and the repetition pointing accuracy. Through the straight line electrical machinery and the straight line trundle guide rail viceapplication, may make the engine bed the rapid traverse speed to enhance 60~80m/min from present 10~20m/mim, even reaches as high as 120m/min. 2. redundant reliable numerical control engine bed reliability is a numerical control engine bed product quality crucial does the numerical control engine bed display its high performance, the high accuracy and the high efficiency, and obtains the good benefit, the key is decided by its reliable height. 3. function rebine function rebine goal is further enhances the engine bed the production efficiency, uses reduc