Cost Optimization Study of Two-Step Helical Gearboxes with First Stage Double Gear Sets

One of the important goals of the optimized gearbox design is that the gearbox cost is minimized. However, so far, there has been no research about the design of a Two-step Helical Gearboxe (THG) with First Stage Double Gearsets (FSDG) and optimum gear ratios to achieve the lowest cost. This paper presents the results of research on the influence of input parameters on the optimum partial gear ratios of the mentioned gearbox. To do that, a simulation experiment was designed and performed. Moreover, a regression formula for finding the optimum gear ratio was proposed. Evaluation results show that the formula is very suitable for the experimental data.