西南交通大学学报2011，Vol.46Issue(1)：138-142,5.DOI:10.3969/j.issn.0258-2724.2011.01.022
平面二次包络环面蜗杆传动强度计算
Strength Calculation of Planar Double-Enveloping Hourglass Worm Gears
摘要
Abstract
In order to simplify the calculation method for bearing capacity of planar double enveloping hourglass worm gears, a contact stress analytic formula for the worm drive was proposed through regression analysis and interpolation method based on the Hertz theory. The bending strength calculation formula was improved by taking into consideration the load distribution coefficient among the meshing teeth. According to the contact finite element model of the worm-gears, three-dimensional stress distribution of the gears was obtained. The results show that the contact stress ( or bending strength) obtained by the analysis formula is 6％-16％ larger than that by the finite element method, and the analysis formula can meet the requirements for engineering use. The contact stress distribution is in a declining L shape along the contact line. As the load of the worm gear increased from 1 N ? m to the rated value, the maximal load distribution coefficient among 5 pairs of meshing gears decreased from 32.4％ to 27.5％.关键词
蜗杆传动/应力分布/有限元法/承载能力分类
机械制造引用本文复制引用
张彦钦,张光辉..平面二次包络环面蜗杆传动强度计算[J].西南交通大学学报,2011,46(1):138-142,5.基金项目
国家自然科学基金资助项目(50075089) （50075089）
