Surface Quality Inspection: The surface quality of linear guides should be smooth and flat, free from cracks, burrs, and irregularities. This can be checked visually by the naked eye and with light exposure. If visible burrs, cracks, oxidation, or rust are detected on the surface, it indicates that there are issues with the surface quality of the linear guides, which will adversely affect their usage and performance.
② Straightness Inspection: Straightness refers to the degree of deviation of the guide rail along its axis, which is an important indicator of linear guide rail accuracy. It can be inspected using specialized laser measuring instruments, machine tools, and CNC measuring systems, among other equipment.
During the inspection, the linear guide rail must be placed flat on the testing equipment. By detecting and analyzing the deviation of the linear guide rail, we can determine if its straightness meets the requirements. If significant deviation is found, it indicates that there is an issue with the straightness of the linear guide rail, which will adversely affect its precision and stability.
③ Hardness Testing: The hardness of linear guides is also an important quality indicator. During the inspection, a sample of the linear guide must be taken and its hardness value measured using hardness testers and other equipment.
④ Rigidity Test: The rigidity of a linear guide refers to its ability to resist deformation, meaning it does not experience excessive bending or deflection under load, which can affect the precision of the moving parts.
⑤ Precision Inspection: The precision of linear guides refers to the positioning accuracy of moving parts on the guide, which is typically represented by parameters such as straightness, parallelism, and perpendicularity.
Additionally, a comprehensive consideration can be made from parameters such as structural process, wear resistance, temperature changes, pre-pressure, and gaps. For instance, the structure should be simple for easy machining, measurement, assembly, and adjustment, reducing costs; wear resistance should be high with minimal wear, and the wear should be automatically compensable or easily adjustable; the impact of temperature changes on the guide rail should be minimal to ensure proper operation at varying temperatures.
