To improve the machining quality of CNC precision parts, the following measures can be taken:

Select high-quality tools and materials: The use of high-quality tools can improve cutting efficiency and machining accuracy, while the selection of suitable materials can reduce deformation and damage during processing.

Optimization of machining parameters: reasonable setting of machining parameters such as cutting speed, feed speed and cutting depth to ensure a stable cutting process and avoid over-cutting or under-cutting.

Strengthen machine maintenance: Check and maintain the machine regularly to ensure its accuracy and stability. Clean and lubricate machine parts and replace worn parts in time to ensure the normal operation of machine tools.

Use the right fixture and positioning device: The choice of fixture and positioning device is crucial to machining accuracy. Reasonable design and use of the fixture to ensure stable clamping and accurate positioning of the workpiece to avoid displacement and deformation during processing.

Strict control of the processing process: in the processing process, it is necessary to strictly control all aspects, especially the replacement of the tool, the adjustment of the fixture and the positioning of the workpiece. The errors and deformation in the processing process should be adjusted and corrected in time to ensure the processing quality.

The use of appropriate measuring tools: the use of high-precision measuring tools to detect and verify the machining parts, timely detection and correction of processing errors, to ensure the stability and consistency of processing quality.

Training and improving the skills of operators: strengthen the training and skills improvement of operators, so that they have good processing technology and operating experience, and can skillfully use numerical control programming and operating skills to improve processing quality.

In conclusion, improving the machining quality of CNC precision parts requires a comprehensive consideration of tools, materials, processing parameters, machine tool maintenance, fixture positioning, processing process control, measuring tools and operator skills, and other factors, through continuous optimization and improvement, and constantly improve the processing accuracy and consistency.