变齿厚渐开线齿轮包络环面蜗杆传动啮合性能分析

摘要/Abstract

摘要： 为准确掌握变齿厚渐开线齿轮包络环面蜗杆传动的宏微观啮合性能及各设计参数对啮合性能的影响，建立了传动副数学模型，推导出啮合几何学方程，研究了螺旋角、传动比、法向模数及压力角等主要设计参数对啮合性能的影响规律；综合考虑选取优化设计参数并进行传动副样件加工，通过传动副对检试验考察了接触斑点的分布情况。分析结果表明：在满足环面蜗杆喉部中径强度和刚度要求的情况下，适当螺旋角、较大传动比、较大法向模数和较大压力角会获得优异的接触线分布、接触区域和较优的微观啮合质量；右侧的微观啮合质量优于左侧的微观啮合质量；传动副样件接触斑点与理论分析结果一致，右侧齿面接触斑点分布更好，验证了分析方法的正确性。

关键词: 变齿厚渐开线齿轮, 环面蜗杆, 啮合性能, 设计参数, 接触斑点

Abstract: In order to accurately grasp the macro-micro meshing performances of the variable tooth thickness involute gear enveloping hourglass worm drives and the influences of design parameters on meshing performances, a mathematical model of this hourglass worm drive was established. The meshing geometrical equations were deduced, and the influences of the main design parameters, such as helix angle, transmission ratio, normal modulus and pressure angle, on the meshing performance were studied. Afterwards, a sample of the transmission pairs was processed with corresponding optimal design parameters, and the distributions of contact spots were investigated by the contact tests. The results show that the suitable helix angle, larger gear ratio, larger normal modulus and larger pressure angle may achieve excellent contact line distribution and better local meshing quality under the conditions of satisfying the strength and stiffness of the hourglass worms throat diameters. Meanwhile, the local meshing quality on the right side is better than that on the left. The contact spots of the sample are consistent with the theoretical analysis results. And the distribution of the right tooth surface contact spots is better, which verifies the correctness of the analytical method.

Key words: variable tooth thickness involute gear, hourglass worm, meshing performance, design parameter, contact spot

中图分类号:

TH132.44

陈燕1;殷国富1;陈永洪2. 变齿厚渐开线齿轮包络环面蜗杆传动啮合性能分析[J]. 中国机械工程.

CHEN Yan1;YIN Guofu1;CHEN Yonghong2. Meshing Performance Analyses of Variable Tooth Thickness Involute Gear Enveloping Hourglass Worm Drives[J]. China Mechanical Engineering.

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