1. Long working hours and high production efficiency, which can repeat uninterrupted labor, and the maintenance line works normally. 2. Strong adaptability to the environment, can work in harsh environments such as dust, flammable and explosive. 3. High motion accuracy and good flexibility, PLC control can effectively reduce the accuracy problems caused by human factors. 4. Good universality. Due to the openness of the structure and principle of the truss robot system, it only needs to be adjusted appropriately to adapt to different work tasks. Therefore, the automatic loading and unloading robot can meet the task requirements of most small and medium-sized enterprises in the process of shaft processing.