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What are the guide rails commonly used in CNC milling machines?
The line rail is a linear guide rail, which consists of a fixed element and a moving element for guiding. The fixed element is installed on the machine tool, and the moving element is installed on the workbench or other moving parts. Guide rails are generally used in mechanical structures with high requirements such as straightness and parallelism. THK, Tianjin Luo Sheng, HIWIN and other manufacturers have related products, and their official website has introductions and product samples.
Hard rail is a guide rail (integrated with the fixed parts) directly processed on the lathe bed, column and other fixed parts of the machine tool, and connected with the workbench or other moving parts through the slide seat. In order to ensure the accuracy, it is necessary to scrape and grind on the guide rail.
Features: the wire gauge belongs to the rolling friction moving speed block, with high positioning accuracy. Insufficient bearing capacity (from which ball guide and roller guide are derived).
Hard rail is a sliding friction bearing, but its moving speed is slow.
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