Abstract: This article mainly introduces a new process for the collinear production and processing of various parts of the transmission box truss automatic line.Through technological transformation of the electrical system, control program, and loading and unloading raceways of the 80 transmission box truss automatic line, and the addition of fixtures, tools, and other tools required for the 100 series transmission box processing, it meets the requirements of the 100 series rear box processing, improves the utilization rate of the automatic line equipment, and supplements the production capacity of the 100 series rear box, Forming simultaneous production of 80 and 100 series rear box shells.