Determination of Optimum Gear Ratios for Minimum Gearbox Volume of Two-stage Helical Gearbox with Second-stage Double Gear Sets


Trinh Kieu Tuan†, Le Hoang Anh‡, Nguyen Hong Linh‡†, Tran Ngoc Huy Thinh‡‡, Nguyen Huu Quang†, Nguyen Thanh Tu‡‡†, Tran Ngoc Giang‡‡†, Vu Ngoc Pi


† University of Economics – Technology for Industries, Vietnam
‡ Vinh Long University of Technology Education, Vietnam
‡† Electric Power University, Vietnam
‡‡ Nguyen Tat Thanh University, Vietnam
‡‡† Thai Nguyen University of Technology, Vietnam

Corresponding Author Email: vungocpi@tnut.edu.vn

This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

In this paper, a study aims to determine the optimal gear ratio of a two-stage gearbox with second-stage double gear sets to target the minimum gearbox volume. To solve this problem, a simulation experiment is designed and performed. Eight main design parameters, including the total gearbox ratio, the coefficient of the face width of the first gear stage, the coefficient of wheel face width of the second gear stage, the allowable contact stress of stage 1, the al-low able contact stress of stage 2, and the output torque were selected as the input parameters of this experiment. The influence of input parameters on the optimal gear ratio was investigated. In addition, a regression formula to determine the optimal gear ratio has been proposed.