The basic requirements for guide rails of CNC machine tools are to ensure smooth machine movement, high precision and long service life. The following are some basic requirements for CNC machine tools for guide rails:

1. High precision: The guide rail must have high precision to ensure that the CNC machine tool can achieve the expected machining accuracy during the machining process. The accuracy of guide rail manufacturing and installation is critical to overall machine tool performance.

2. High rigidity: The guide rail needs to be rigid enough to resist various forces during cutting and movement and maintain the stability of the machine tool. Highly rigid guide rails help reduce vibration and deformation and improve processing accuracy.

3. Low friction coefficient: The surface of the guide rail should have a low friction coefficient to reduce friction resistance, ensure smooth movement of the machine tool, and improve efficiency.

4. Low wear: The selection of guide rail materials and lubrication methods should be able to reduce wear and extend the service life of guide rails and machine tools.

5. Good durability: The guide rail needs to have good durability and be able to withstand long-term and high-frequency use without failure. This is essential to improve the reliability and stability of machine tools.

6. Dust prevention and anti-pollution: In order to maintain the accuracy of the guide rails, measures need to be taken to prevent dust, chips and other impurities from entering the guide rails, thereby preventing contamination and damage to the guide rails.

7. Easy maintenance: The design of the guide rail should take into account easy maintenance, including the design and maintenance of the lubrication system, to ensure long-term stable operation of the machine tool.

8. Adapt to high-speed movement: Some CNC machine tools require high-speed movement, so the guide rails need to adapt to the requirements of high-speed movement to avoid problems caused by high speed, such as resonance and vibration.

9. Material selection: The material used to make the guide rail needs to have sufficient hardness and wear resistance. High-strength alloy steel or other special alloys are usually used.

10. Precise lubrication system: A good lubrication system is crucial to the normal operation and life of the guide rail. Ensure that the guide rails are lubricated in a timely and even manner.

Taking these requirements into consideration, manufacturing and selecting appropriate guide rails is a crucial part of the CNC machine tool design and manufacturing process. The quality of the guide rail directly affects the performance and processing accuracy of CNC machine tools.