The main function of the ball screw is to support the linear motion, so that the linear motion is more accurate and can still maintain the linear motion at high speed. The guide rail itself has higher requirements. Only the guide rail can provide an accurate and effective way to ensure that the linear motion it makes is effective and efficient. The specific requirements of the ball screw on the guide rail are as follows.
1. The precision requirements of the guidance
Whether the guide rail supports linear motion or circular motion, it is the geometric accuracy and structure of the guide rail that affect the guiding accuracy. Of course, the thermal deformation of the guide rail also affects the accuracy to a certain extent, and there are special conditions that may be encountered during work, such as the thickness of the oil film.
2. Wear resistance
Repeated linear motion requires high wear resistance of the guide rail. If the time of linear motion is long, the accuracy of the guide rail itself has been reduced, so the stability of the linear motion of the ball screw is also affected.
3. Prevent sudden changes in fatigue points
Repeated linear motions will cause fatigue points on the guide rails, and pits will appear on the fatigue points. Therefore, when controlling the rolling guide rails, the maximum load and the uniformity of the bearing strength must be considered. Preventing sudden changes in fatigue points can ensure the effectiveness of the guide rail.
The requirements of the ball screw on the guide rail are relatively high. It is afraid that repeated linear motion will cause fatigue points on the guide rail, and the fatigue points will cause potholes to make the linear motion inaccurate and effective. Therefore, when purchasing, the wear resistance and endurance of the guide rail must be taken into consideration.