1. positioning accuracy; In terms of accuracy, the identification of linear guide rail transmission mechanism reduces the problem of interpolation lag. The positioning accuracy, reproduction accuracy and position detection feedback control are easier to achieve than rotating motor + ball screw

2.重复精度对比;传动机构简单，减少插补滞后的问题，相反丝杆的间隙容易产生影响，所以直线导轨更容易实现。

2. comparison of repetition accuracy; The transmission mechanism is simple, which reduces the problem of interpolation lag. On the contrary, the clearance of the screw rod is easy to be affected, so the linear guide rail is easier to realize.

3.速度比较;一般伺服电机由于离心力的作用，高速运作时，将受到较大应力，因此转速和输出功率受到限制。相对而言，直线导轨不收限制外，也没有机械损耗，从而提高传动速度。

3. speed comparison; Due to the centrifugal force, the general servo motor will be subject to large stress when it operates at high speed, so the speed and output power are limited. Relatively speaking, the linear guide rail has no restrictions and no mechanical losses, so as to improve the transmission speed.

4.行程对比;从行程来看，直线导轨的行程取决于定子和动子，理论来说直线导轨可以无限延长；而伺服导轨+丝杆由于承受负载、丝杆外径、精度等级等因素的影响，通常只能达到4M的长度。

4. stroke comparison; In terms of travel, the travel of the linear guide rail depends on the stator and mover. Theoretically, the linear guide rail can be extended indefinitely; However, the length of servo guide rail + screw rod can only reach 4m due to the influence of load, screw rod outer diameter, accuracy grade and other factors.

5.维护简单;直线导轨部件少，运动机械无接触，很少甚无需维护。伺服电机丝杆结构多，部件多，需经常维护或更换配件。

5. simple maintenance; The linear guide rail has few components, and the moving machinery has no contact, so it requires little or no maintenance. The servo motor has many screw structures and components, which need frequent maintenance or replacement of accessories.

6.寿命对比;直线导轨：直线导轨因运动部件和固定部件间无直接接触，不会因动子的高速运动而磨损即使长时间运用对运动精度无变化，故寿命更长。

6. life comparison; Linear guide rail: because there is no direct contact between moving parts and fixed parts, the linear guide rail will not be worn due to the high-speed movement of the mover. Even if it is used for a long time, it will not change the motion accuracy, so its service life is longer.

伺服电机+丝杆：滚珠丝杆因高速运动造成传动部件的磨损，同时无法再高速往复运动中确保精度，从而影响精度。

Servo motor + screw: the high-speed motion of the ball screw causes the wear of the transmission parts, and the accuracy can not be ensured in the high-speed reciprocating motion, thus affecting the accuracy.

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