Abstract
The purpose of this study is to analyze the meshing characteristics of a single-stage helical gear speed reducer. Firstly, the mathematical model of a helical gear pair with linear tip relief, lead crowning and profile shift was developed based on the theory of gearing and differential geometry. The transmission errors and contact patterns were calculated by self-developed tooth contact analysis (TCA) computer program. In addition, finite element analysis (FEA) and commercial design package were used to attain the contact stress. The influences of various assembly errors on the contact stress and contact pattern were also investigated and discussed.
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