Calculation of Optimum Gear Ratios of Mechanical Driven Systems Using Two-Stage Helical Gearbox with First Stage Double Gear Sets and Chain Drive

Abstract

The article reports a study on identifying the optimum gear ratios of mechanical driven systems containing a two-stage helical gearbox with the first stage double gear sets and a chain drive. To find the optimum gear ratios, the minimum system length was chosen as the objective function of the optimization problem. Moreover, the input parameters including the total system ratio, the wheel face width coefficients of the first and the second stages, the allowable contact stress and the output torque and their impacts on the optimum ratios were explored based on the design and implementation of a simulation experiment. The obtained equations showed that the optimum gear ratios can be calculated precisely and conveniently.