Optimization design and parametric modeling of traction gear transmission used in subway locomotive

In this study we build the parametric mathematical model of machine tool and solid models of traction gears using in subway locomotive by analyzing the machining process of involute gears and meshing principle of involute gears. The optimization design is done through deduce the relations between basic parameters of gear and loading capacity of transmission. On the base of analyzing optimization principles and methods for involute gear system the software is obtained by considering the contact fatigue strength of teeth surface, the bending fatigue strength of root fillet and scuffing strength of teeth surface. It is optimized that the best parameters decide the strength safety and loading capacity by analyzing the optimization results.