Milling-turning composite machining technology is an advanced machining method that integrates turning and milling functions. Its biggest feature is that it can achieve high-precision machining of parts with complex shapes and structures. This technology combines the advantages of turning and milling, and can complete multiple machining operations in one clamping, thus avoiding the error accumulation problem caused by multiple clamping. More importantly, milling-turning composite machining technology uses advanced measurement systems and tool compensation technologies, which enables it to monitor and correct machining errors in real time during the machining process to ensure the accuracy of the machining dimensions.

In milling-turning composite machining, advanced measurement systems play a vital role. These systems usually use high-precision technologies such as laser ranging and optical measurement to monitor dimensional changes during the machining process in real time. When a machining error is detected, the measurement system will immediately feed back the information to the control system, and the control system will make corresponding adjustments based on the feedback information to achieve precise control of the machining dimensions. This real-time monitoring and feedback mechanism greatly improves the machining accuracy and ensures the dimensional stability of the customized copper contact pins.

In addition to the advanced measurement system, milling-turning technology also uses tool compensation technology to further ensure the accuracy of processing dimensions. Tool compensation technology refers to the automatic adjustment of the cutting parameters of the tool to compensate for processing errors according to the wear of the tool and changes in processing conditions during the processing. This technology can track the wear of the tool in real time and make corresponding adjustments according to the degree of wear to ensure the stability of the processing size. In addition, tool compensation technology can also automatically adjust the cutting parameters according to changes in processing conditions, such as material hardness, cutting speed, etc., to optimize the processing effect.

Thanks to the advanced measurement system and tool compensation technology, milling-turning technology has high-precision processing capabilities. This capability ensures the stability of the size, shape and surface quality of the customized copper contact pins. In terms of size, milling-turning technology can achieve precise control of the tiny size of the contact pin to ensure its accuracy requirements in various application scenarios. In terms of shape, milling-turning technology can process contact pins of various complex shapes, such as cones, spheres, etc., to meet the needs of different application scenarios. In terms of surface quality, the turning-milling composite processing technology can achieve fine processing of the contact pin surface, ensuring that its surface roughness meets the requirements, thereby improving its connection performance and wear resistance.

In order to verify the high-precision stability of the turning-milling composite processing technology in the processing of customized copper contact pins, we conducted relevant experiments. In the experiment, we selected contact pins of various shapes and structures for processing, and used advanced measuring instruments to detect the size, shape and surface quality of the processed contact pins. The results show that the turning-milling composite processing technology can achieve high-precision and high-stability processing of contact pins, and its dimensional accuracy is controlled within ±0.01mm, and the surface roughness reaches below Ra0.8. These results fully demonstrate the high-precision stability of the turning-milling composite processing technology in the processing of customized copper contact pins.