CNC precision processing technology is of utmost importance in the aerospace industry, where parts need to meet extremely high standards of accuracy, reliability, and performance. One of the key technologies is high - speed machining (HSM). HSM allows for the rapid removal of material while maintaining tight tolerances, which is crucial for aerospace components that often have complex geometries and thin - walled structures. By operating at high spindle speeds and using advanced cutting tools, HSM can achieve surface finishes as smooth as Ra 0.4 - 0.8 μm, reducing the need for extensive post - machining processes.

　　Another important aspect is five - axis machining. Five - axis CNC machines offer greater flexibility and precision compared to traditional three - axis machines. They can machine parts from multiple angles in a single setup, eliminating the need for multiple setups and reducing the potential for errors. This is particularly beneficial for aerospace parts with intricate shapes, such as turbine blades and engine casings. The ability to machine these parts in one operation also improves production efficiency and reduces costs.

　　Precision grinding is also widely used in aerospace CNC processing. For components that require extremely high surface accuracy and flatness, such as guide rails and bearing surfaces, precision grinding can achieve tolerances within a few micrometers. Advanced grinding techniques, such as creep - feed grinding, are employed to remove material at a controlled rate while maintaining the highest level of precision.

　　In addition, the use of advanced measurement and inspection technologies is an integral part of aerospace CNC precision processing. Coordinate Measuring Machines (CMMs) with high - resolution probes are used to measure the dimensions and geometries of parts with sub - micrometer accuracy. Non - destructive testing methods, such as ultrasonic and X - ray inspection, are also utilized to detect any internal defects or flaws in the parts. By continuously innovating and applying these advanced CNC precision processing technologies, the aerospace industry can produce components that are essential for the safe and efficient operation of aircraft and spacecraft.