Granite air-floating guide is a high-precision motion guide component formed by combining natural granite as the guide base with air-floating technology. It uses compressed air to form a micron-level air film between the guide and the moving part, so that the two have no mechanical contact and achieve suspended relative motion. Granite is precisely ground to ensure that the guide surface has extremely high flatness, straightness and smoothness, providing a stable foundation for the air-floating system.
Granite air-floating guide has the following advantages:
(1) The guide surface is gas-lubricated, and its friction coefficient is extremely small (about 0.0005), so the drive power can be greatly reduced; the power requirement for the drive component is greatly reduced, and the cost and thermal impact will be greatly reduced accordingly!
(2) Due to non-contact friction, the guide rail has minimal wear and a long service life, can maintain manufacturing accuracy for a long time, and reduces maintenance workload;
(3) The air film has an error equalization effect, which can improve the motion accuracy of the guide rail;
(4) The thickness of the air film is almost unaffected by speed, and there will be no creep even at extremely low speeds, and the movement is smooth;
(5) Almost no heat is generated, no viscosity changes occur, and no additional cooling measures are required.
With these advantages, granite air-floating guide rails have become core components of high-end equipment such as precision machine tools, coordinate measuring machines, and semiconductor lithography equipment, and are one of the key technologies for achieving ultra-precision motion control.
