How to test the quality of guide rails in automation equipment?

Linear guide is a commonly used element in the mechanical system, widely used in industry, machine tools, CNC machine tools, robots and other fields. Therefore, whether the quality of linear guide is good or not will directly affect the precision and life of the mechanical system. Therefore, how to determine the quality of linear guide is very critical. Then the following is summarized in the linear guide can detect the quality of the method for reference.

1, Surface quality: the surface of the guide rail should be smooth, free of burrs, scratches, cracks and other defects, and the surface roughness should meet the design requirements. High-quality guide rail surface should show a uniform luster, no obvious dull color difference or color abnormality.

2, Chamfering treatment: genuine factory production guide rail is usually at the edge of the regular chamfering treatment, which not only enhances the aesthetics, but also effectively prevent the use of the process of stress concentration.

3, Dimensional accuracy testing: the use of precision measuring instruments such as coordinate measuring machine, vernier calipers, etc., the length, width, height, thickness and other dimensions of the guide rail to ensure that it meets the design requirements.

4, Straightness detection: commonly used methods are laser interferometer method and straightness meter method, laser interferometer method utilizes the laser interference principle, through the laser beam in the linear guide reflections and interference, measuring the deviation of its movement trajectory, with high precision and non-contact measurement advantages.

5, Parallelism detection: detection of parallelism methods are mainly dual-frequency laser interferometer method and laser collimator method, dual-frequency laser interferometer method utilizes two beams of different frequencies of the laser for interferometric measurements, through the calculation of the relative displacement to assess the parallelism error.

6, Sliding smoothness detection: detection of sliding smoothness of the main methods are speed sensor method and force sensor method, speed sensor method by installing speed sensors on the guide rail, real-time monitoring of the changes in its speed of movement, in order to assess the sliding smoothness.

7, Repeat positioning accuracy detection: detection of repeat positioning accuracy methods are mainly electronic micrometer method and scale method, electronic micrometer method by installing electronic micrometer on the guideway, measuring the final position after repeated reciprocating motion and the difference between the initial position.

Through the above methods, the quality of the guide rail can be comprehensively tested to ensure that it can provide stable support and guidance in the process of use, prolong the service life, and improve the overall performance and accuracy of the equipment.

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