esign focuses on the design procedure of the main drive system of the machine tool, and according to the determined motion parameters, the total center distance of the gearbox is the minimum. In the main drive system of the machine tool, to reduce the number of gears, to simplify the structure, shorten the axial size, the design method of the tooth number of the gear is the trial and error, and the calculation is troublesome and difficult to find out the reasonable design scheme. In this paper, the characteristics of the main transmission system of the triple slip gear transmission characteristics of the analysis and research, drawing parts of the work plan and the main axis box expansion plan and section.РKey words: transmission system design, transmission, structure, structure, structure