A Calculation Method for Antiscuffing Load Capacity of Herringbone Gear Considering Shaft Misalignment Error

作者：Xiangyang Xu, Peng Zhang, Linfang Fan, Shengping Mao · 发表于：Journal of Mechanical Design · 年份：2025 · DOI：10.1115/1.4068851 · 被引用次数：5 · 研究领域：Gear and Bearing Dynamics Analysis、Metallurgy and Material Forming、Engineering Applied Research

Abstract Tooth surface scuffing strength design is an important design method to ensure the antiscuffing load capacity of herringbone gears. Shaft misalignment errors directly impact the antiscuffing load capacity of herringbone gears, which cannot be ignored in the calculation of antiscuffing load capacity. In this article, a discrete non-Hertz contact model for herringbone gears was developed to characterize the load distribution on the tooth surface under misalignment error. Based on the meshing geometrical relationships of herringbone gears under error conditions, a thermo-elastohydrodynamic lubrication (TEHL) model was established for calculating the friction coefficient on the tooth surfaces. The frictional heat flux density formula was refined, and based on the coupling iteration of the heat transfer model and the TEHL model, a scuffing load capacity calculation model for herringbone gears was established and validated through equivalent scuffing tests. The research indicates that the misalignment errors cause biased loading in herringbone gears, shifting the distribution of core temperature and oil film thickness parameters, with these shifts becoming more pronounced as errors increase. For herringbone gears with positive modifications, the contact temperature at the engaging-out point is the highest, and the oil film thickness is the smallest. As the load increases, the formation of hydrodynamic oil film becomes increasingly difficult, making scuffing failure most li...