Precision CNC machining technology is a high-precision, high-efficiency machining method that can be used to manufacture various precision parts. Brass materials have been widely used in various fields due to their good corrosion resistance and electrical conductivity. G10 CNC machining technology is the latest high-performance cutting technology, which can achieve higher precision and higher speed metal processing. CNC milling of brass can be done on a CNC milling machine equipped with proper equipment such as milling cutters and fixtures. Processing 464 brass refers to adding 1-3% hardener to brass, which improves the strength and hardness of brass, so it is necessary to use precision CNC machining technology to ensure the dimensional accuracy and surface quality of parts. In such a processing process, it is necessary to adopt appropriate cutting parameters, select high-quality processing tools, and use an advanced numerical control system to ensure the satisfaction of the final processing effect.