Geometric accuracy of linear guide rail includes straightness of guide rail between vertical surface and horizontal surface. The main factors affecting the accuracy of linear guide rail are summarized as follows.
1. Straightness of linear guide rail
Directly affect the parallelism of the guide rail surface and the verticality between the guide rails.
2. Stiffness of linear guide rail
Contact deformation, local deformation and self-deformation will occur when the guide rail is stressed. Contact deformation is caused by the microscopic inhomogeneity of the guide rail plane. Local deformation generally occurs where the stress is concentrated. The deformation of the guide rail itself is the overall deformation of the guide rail under external load, which is related to the material and layout of the guide rail.
3. Surface roughness of linear guide rail
Mainly depends on the material, hardness and grinding process of the guide rail.
4. Structure type of linear guide rail
Directly affects the positioning accuracy and precision index of machine tools.
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