Today,let's talking about the prepressure of the linear rail slide.
PYG’s lm guide rail accuracy levels are divided into (walking parallelism, the following guide rail length of 100mm as an example), ordinary (no mark /C) 5μm, advanced (H) 3μm, precision (P) 2μm, super precision (SP) 1.5μm, super super precision (UP) 1μm.
1.According to the use of different machinery. Prepress the bearing slider. Generally, prepressure is divided into prepressure 、without prepressure and heavy prepressure. The greater the preload, the better the rigidity. Load: Generally at the beginning of the selection, 1/3 of the rated dynamic load is determined as the upper limit of the actual load. Therefore, it is generally added to the prepressure to ensure that there is no subsidence. If the guide rail is used up and down, the guide rail will play a guiding role. How much the slide rises is related to the lead screw or other transmission method used, and the slide rail and the slide block have no relationship.
2. Different brands are basically divided into three kinds, usually gap, light prepressure, medium prepressure
The biggest role of the clearance is to affect the walking accuracy, load carrying capacity and rigidity of the guide rail. Moreover, the choice of a guide rail with clearance can reduce the vibration and impact caused by reciprocating motion to a certain extent.
3, when the load, the slider is not sinking, the accurate statement should be elastic deformation, if you want to say how much, any guide data are not marked, because it can be ignored.
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Post time: Oct-23-2023