Tolerance analysis of involute spur gear from the perspective of design

The existing gears’ tolerance standards are formulated from the point of view manufacturing and measurement. Tolerance categories numerous. What is more, they have no correlation with each other. analysis optimization gear set difficult. Module, pressure angle center distance most important parameters for gears. Their variations directly affect transmission precision Through careful research influence deviations module angle, a novel method proposed in this paper perspective design. For single gear, specification only pay attention to these two tolerances. fluctuation also studied. Meanwhile, calculation sensitivities percent contributions about related introduced, which provides basis optimization. At last, simple case studied, demonstrates validity novelty present work.