The main function of the ball screw is to support the linear motion, which makes the linear motion more accurate and can still adhere to the linear motion at high speed. Its own guide rail request is also high. As long as the guide rail can provide an accurate way, it can ensure the efficiency of linear motion. The ball screw requests the guide rail in detail.

1、導向的精度請求；導軌支持運動做直線運動還是做帶有圓度的運動，而影響到導向精度的是導軌的幾何精度還有構造方式。當然了導軌的熱變形也在一定水平上影響到了準確度，還有工作時分可能碰到的特殊狀況，比方說是油膜的厚度。

1. Precision request of guidance; The guide rail supports linear motion or motion with roundness, and what affects the guiding accuracy is the geometric accuracy and construction mode of the guide rail. Of course, the thermal deformation of the guide rail also affects the accuracy to a certain extent, as well as the special conditions that may be encountered during work, such as the thickness of the oil film.

2、耐磨；重復的直線運動，請求導軌的耐磨性要較高，否直線運動的時間一長，導軌自身的準確度就曾經降低了，那么滾珠絲桿的直線運動的穩定性也就遭到了影響。

2. Wear resistance; The repeated linear motion requires the wear resistance of the guide rail to be higher. If the linear motion takes a long time, the accuracy of the guide rail itself will be reduced, and the stability of the linear motion of the ball screw will be affected.

3、避免疲倦點的突變；重復的直線運動，導軌上面就會呈現疲倦點，而這個疲倦點就會呈現凹坑的狀況，所以在控制滾動導軌的時分一定要思索到大負荷狀況和接受力度能否平均的狀況。避免疲倦點呈現突變，就可以確保導軌的準確性。

3. Avoid mutation of fatigue point; Repeated linear movement will present a fatigue point on the guide rail, and this fatigue point will present a pit. Therefore, when controlling the rolling guide rail, we must consider whether the heavy load condition and acceptance force can be average. To avoid sudden changes in fatigue points, the accuracy of the guide rail can be ensured.

滾珠絲桿對導軌的請求是比擬高的，就怕重復的直線運動招致導軌上面呈現疲倦點，招致疲倦點呈現坑洼的狀況下使得直線運動不能準確。因而在選購的時分，導軌的耐磨性和接受力度問題一定要被思索進去。

The request of the ball screw for the guide rail is relatively high. It is afraid that the repeated linear motion will lead to fatigue points on the guide rail, and the linear motion can not be accurate when the fatigue points are pitted. Therefore, at the time of purchase, the wear resistance and acceptance of the guide rail must be considered.

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