The feeding section of the lathe-milling compound machine can be equipped with an automatic feeding device. The receiving section can be fitted with both short and long piece receivers to achieve a "single person, multiple machines" processing mode, allowing one operator to manage multiple machine tools, thereby saving human resources and reducing labor costs. Additional facilities such as automatic chip removers can also be added to form a flexible production line for unmanned automated processing. The CNC center lathe is suitable for the composite processing of various high-precision, multi-batch, and complex-shaped shaft components used in industries such as automotive, motorcycle, communication, refrigeration, optics, home appliances, microelectronics, electronics, and watches.