滚珠型弧面凸轮连续传动机构承载接触分析

摘要/Abstract

摘要：

在建立滚珠型弧面凸轮连续传动机构数学模型的基础上,得到了弧面凸轮的啮合模型,并进行了齿面接触特性分析。弧面凸轮啮合传动时接触形式表现为球齿面与马鞍面之间的点接触,对点接触形成的椭圆进行了分析,确定了其方向和尺寸。利用曲面上任意点处主曲率的计算方法,得到了接触点处主曲率的变化规律。计算了接触区域最大压应力,分析了弧面凸轮连续传动时接触中心最大压应力的变化规律。

所得结论对进一步研究滚珠型弧面凸轮连续传动理论与实际应用具有重要的指导意义,为完善滚珠型弧面凸轮传动机构的设计与制造提供了理论依据。

关键词:

啮合特性, 接触分析, 弧面凸轮, 接触椭圆

Abstract:

Based on the mathematical models of the globoidal cam continuous transmission mechanism with balls,a meshing model was obtained and the tooth contact analysis was performed.The tooth contact form of meshing globoidal cam was a point contact between convexity and saddle surfaces.The contact ellipses of the meshing tooth surfaces were studied,and the orientations and dimensions of contact

ellipses were obtained.By the solution method of the principal curvature,the equations of the contact characteristics of the contact points on the globoidal cam with balls were developed.Based on the equations,the contact spots on the globoidal cam were simulated and analyses were conducted on the rule of the principal curvature of the contact points on the pinion and the globoidal cam as well as the rule of the maximum press stress of the contact areas on the globoidal cam.The study is useful for further investigations in transmission theory and practical applications of globoidal cam with balls.The presented results provide the theoretical basis for the design and manufacture of globoidal cam with balls.

Key words: meshing characteristic, contact analysis, globoidal cam, contact ellipse

中图分类号:

TH132

牟世刚, 冯显英, 李蕾.

滚珠型弧面凸轮连续传动机构承载接触分析

[J]. 中国机械工程, 2012, 23(4): 379-382.

MAO Shi-Gang, FENG Xian-Yang, LI Lei.

Load Tooth Contact Analysis on Globoidal Cam Continuous Transmission Mechanism with Balls

[J]. China Mechanical Engineering, 2012, 23(4): 379-382.

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