Abstract: This article conducts an in - depth study on the in - machine deburring technology for wheel - side and wheel - hub automation lines. Firstly, it expounds on the formation mechanism of burrs and their impact on product quality. Secondly, it introduces the characteristics and applications of traditional mechanical deburring methods and modern deburring technologies. Finally, it details the removal cases of burrs such as the fly - edge burrs during outer - circle turning of wheel hubs, the flanging burrs during drilling on casting surfaces, and the flanging burrs at the exit of drilling on wheel - side reduction shells. The research shows that product structure optimization can reduce burr generation. In - machine deburring in non - bottleneck processes can reduce labor intensity and the quality problems caused by human participation in the manufacturing process, without affecting the output of the production line. In the future, automated, intelligent, and environmentally - friendly deburring technologies will become the main development directions.