双点啮合渐开线圆弧齿轮啮合性能分析及仿真

发布时间：2018-04-09 20:07

本文选题：双点啮合渐开线圆弧齿轮　切入点：重合度　出处：《昆明理工大学》2011年硕士论文

【摘要】：齿轮传动由于其具有的传动范围广、传动效率高、传动比精确、寿命长以及高可靠性等优点,使得其广泛应用于机械传动中。常见的有渐开线齿轮,圆弧齿轮以及单点啮合渐开线圆弧齿轮。本文基于对传统双圆弧齿轮、渐开线齿轮、以及单点啮合渐开线圆弧齿轮结构及性能分析的基础上提出了一种新型齿轮传动装置。并对该新型齿轮传动装置结构性能做了深入研究。本文在结合单点啮合渐开线圆弧齿轮传动理论基础上,利用齿轮几何学相关理论推导了双点啮合渐开线圆弧齿轮齿面方程、接触线方程。并且结合结构特点推导了其啮合线方程。结合分双点啮合渐开线圆弧齿轮结构,可分析得出其重合度包括两大部分：既包括端面重合度,又包括纵向重合度,并推导了其重合度计算公式。本文根据双点啮合渐开线齿轮传动理论,以及其结构特点,借助Pro/E中参数化建模功能,成功对双点啮合渐开线圆弧齿轮进行了参数化建模。为后续力学性能研究,提供了模型数据。利用有限元法计算齿轮接触应力,获得了最大接触应力值。同时探索了双点啮合渐开线圆弧齿轮应力沿接触线分布规律。同时证明了同一轮齿两接触点间应力叠加效应较弱。利用弹性力学相关理论,计算齿轮真实外载荷分布。并按此载荷加载,获得弯曲应力值,以及定性分析了其弯曲应力沿齿宽方向分布规律。同时得出,同一轮齿上两接触点产生弯曲变形,对彼此载荷分布影响较小。
[Abstract]:Gear transmission is widely used in mechanical transmission because of its wide transmission range, high transmission efficiency, accurate transmission ratio, long life and high reliability.Common involute gear, arc gear and single point meshing involute arc gear.Based on the analysis of the structure and performance of the traditional double arc gear, involute gear and single point meshing involute arc gear, a new gear transmission device is proposed in this paper.The structure and performance of the new gear drive are also studied.Based on the theory of single point meshing involute circular arc gear transmission, the tooth surface equation and contact line equation of double point meshing involute circular arc gear are derived by using the gear geometry correlation theory.The meshing line equation is deduced according to the structural characteristics.Combined with the double point meshing involute circular arc gear structure, it can be concluded that the coincidence degree includes two parts: the end surface coincidence degree and the longitudinal coincidence degree, and the formula for calculating the coincidence degree is derived.Based on the theory of double point meshing involute gear transmission and its structural characteristics, the parametric modeling of double point meshing involute circular arc gear is successfully carried out with the help of parameterized modeling function in Pro/E.The model data are provided for the further study of mechanical properties.The contact stress of gear is calculated by finite element method, and the maximum contact stress is obtained.At the same time, the distribution of stress along the contact line of double point involute arc gear is explored.It is also proved that the stress superposition effect between two contact points of the same gear tooth is weak.Based on the theory of elastic mechanics, the real external load distribution of gear is calculated.According to the load, the bending stress is obtained, and the distribution of bending stress along the width of the tooth is analyzed qualitatively.At the same time, the bending deformation of two contact points on the same gear teeth is obtained, which has little effect on each other's load distribution.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH132.41

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