Research on ergonomic improvement of automobile assembly process based on JACK Software

In order to improve human-machine matching in the field of automobile manufacturing, shorten the assembly production cycle and improve the existing assembly mode, according to the product assembly process flow. Risk management of automobile assembly process was carried out by identifying risk points and the LEC method, and the safety ergonomics of instrument panel assembly process was studied by JACK simulation software. First, virtual man-machine engineering simulation was carried out on the assembly process of the assembly process instrument. Through the action decomposition of the instrument panel assembly process, the environment and human body were simulated. Second, using the lower back spine of the assembly process, static strength prediction, working posture analysis, and rapid upper limb assessment research, it is identified that the movement of controlling manipulator grasping the dashboard and loading into the car skeleton has the risk of personnel health injury. Finally, the assembly process design was improved for safety man-machine, the improved operating environment and operation process were simulated and reanalyzed.The results show that the man-machine relationship, working environment and operation process are improved through parameter optimization,and it provides a new idea and method for man-machine matching degree in automobile assembly process.