Linear guide rail is a kind of precision transmission device, which can be said to be an irreplaceable accessory in the application of mechatronics. It has the characteristics of high efficiency, energy saving, accurate positioning and accurate guidance. There are different strict standards for the accuracy requirements of linear guide rail, no matter what application it is.
In our daily work, the accuracy of linear guide rail will drop, which greatly affects the performance of the whole transmission system. Next, let's understand the factors affecting the accuracy of linear guide rail.
1. Design accuracy: This includes the design of the geometric size, shape and tolerance of the guide rail. The higher the design accuracy, the more difficult and costly the manufacturing of the guide rail will be, but at the same time, higher working accuracy can be obtained.
2. Technological level in the manufacturing process: The fineness of the manufacturing process, the accuracy of the processing equipment and the temperature control during the processing will directly affect the actual accuracy of the guide rail. If there are errors or defects in the manufacturing process, the accuracy of the guide rail can not be guaranteed.
3. Stiffness of linear guide rail: Stress on the guide rail will lead to contact deformation, local deformation and self-deformation. The contact deformation is caused by the microscopic inhomogeneity of the guide surface; Local deformation usually occurs where the stress is concentrated; The deformation of the guide rail itself is the overall deformation of the guide rail after external load, which is related to the material and layout of the guide rail.
4. Straightness of linear guide rail: It directly affects the parallelism and verticality between guide rail surfaces.
5. The structural type of linear guide rail: it directly affects the positioning accuracy, repetitive positioning accuracy and other precision indexes of the machine tool.
6. Surface roughness of the guide rail: It mainly depends on the material, hardness and grinding process of the guide rail.
7. Installation and adjustment: During installation, if the positioning of the guide rail is inaccurate, the fixing is not firm or the adjustment is improper, the accuracy of the guide rail will be reduced.
8. Service environment: The change of temperature will lead to the thermal expansion and cold contraction of the guide rail material, thus affecting its dimensional accuracy; Excessive humidity may lead to rust or corrosion of the guide rail and reduce its surface accuracy; The accumulation of dust and sundries may also affect the motion stability of the guide rail.
9. Material and lubrication condition of guide rail: High-quality material can improve the rigidity and wear resistance of guide rail, while proper lubrication can reduce friction and wear and improve the movement accuracy of guide rail.
The above nine factors will affect the accuracy of linear guide rail to varying degrees, and the above problems should be avoided. Regular maintenance is very important, and lubrication and cleaning are indispensable, which is helpful to reduce the wear between parts and effectively improve the service life. It can effectively maintain the smoothness of the guide rail during operation, effectively prevent the accuracy deviation caused by unbalanced friction, and ensure the smooth and accurate operation, especially under complex and changeable environmental conditions. Please contact us if you have other questions or purchase requirements.
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