The gear machining process mainly includes the following steps: Firstly, forging the billet. Hot forging is a commonly used rough forging process, especially suitable for the production of automotive gear parts. In recent years, cross wedge rolling technology has been widely used in shaft machining, especially suitable for making complex stepped shaft blanks. It has high precision, small post-processing allowance, and high production efficiency. Secondly, carry out normalization. The purpose is to obtain hardness suitable for subsequent gear cutting and prepare the microstructure for final heat treatment to reduce heat treatment deformation. The material used is usually 20CrMnTi, which adopts isothermal normalizing process and effectively solves the drawbacks of traditional normalizing process. The product quality is stable and reliable. Next, perform turning machining. In order to meet the positioning requirements of high-precision gear machining, the machining of gear blanks is carried out using CNC lathes and mechanically clamped non regrinding cutting tools to achieve synchronous machining of aperture, end face, and outer diameter, ensuring the perpendicularity requirements of the inner hole and end face. At the same time, it ensures small dimensional dispersion in large-scale gear blank production, improves gear blank accuracy, and ensures the quality of subsequent gear machining. In addition, the high efficiency of CNC lathe machining reduces the number of equipment and has good economy. Then, perform rolling and gear hobbing. The tooth processing mainly uses ordinary hobbing machines and hobbing machines, which have lower production efficiency but are easy to adjust and maintain. With the development of coating technology, it is very convenient to re coat the rolling cutters and cutting edges after grinding, which increases the service life of the cutting tools by more than 90%, reduces the number of tool changes and grinding time, and has significant benefits. Next, shave your teeth. Radial gear shaving technology is widely used in large-scale automotive gear production due to its advantages of high efficiency and easy implementation of tooth profile design and tooth direction modification. Subsequently, heat treatment is carried out. Automotive gears require carburizing and quenching to ensure their good mechanical properties. The company has introduced a continuous carburizing and quenching production line from the German company Laoyi, and the heat treatment effect is satisfactory. Finally, perform grinding processing. Perform precision machining on the inner hole, end face, and outer diameter of the shaft of the heat-treated gear to improve dimensional accuracy and reduce positional tolerances, ensuring the quality of the final product.