Analysis of tooth surface wear in a helical gear pair with axis misalignment
                                                              XIAO Pengcheng
                             (School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350112, China)


Abstract: Aiming at the problem that axis misalignment aggravates tooth surface wear, a method to formulate tooth surface wear was proposed by combining finite element method and numerical simulation method. Taking a single helical gear pair as the research object, an analytical model of depth of surface wear with axis misalignment was established based on the Archards wear formula. On this basis, the influence of the helical angle modification and crowned modification on the maximum depth of surface wear was analyzed, and the comprehensive tooth modification strategy for mitigating tooth surface wear was developed accordingly. The results show that the vertical plane axis misalignment of the helical gear is more significant than the horizontal axis misalignment on tooth surface wear with the same working condition. The comprehensive modification method of involute crowned modification and helical angle modification can reduce the influence of gear axis misalignment on tooth surface wear. The results of the above research are expected to make a suitable strategy to reduce the process of tooth surface wear.
Key words: helical gear; tooth surface wear; axis misalignment; helical angle modification; crowned modification