弧齿锥齿轮参数化设计及有限元分析

发布时间：2018-01-05 15:41

本文关键词：弧齿锥齿轮参数化设计及有限元分析　出处：《合肥工业大学》2012年硕士论文　论文类型：学位论文

【摘要】：在相交轴线的齿轮传动中，弧齿锥齿轮具有传动平稳、承载能力强等优势，已广泛被应用到现代机械制造的各个领域。由于弧齿锥齿轮传动常用于高速、重载等工况中，啮合过程复杂，为了保证弧齿锥齿轮传动可靠性、强度及精度要求，有必要深入研究其动静态啮合特性以及相关因素对动静态啮合性能的影响。本文从弧齿锥齿轮啮合原理、接触力学及动力学原理出发，构造了锥齿轮三维几何模型、有限元网格模型，研究了弧齿锥齿轮动静态特性，得出了相关参数对其动静态性能影响的变化规律及结论。其研究所涉及的方法及结论对于弧齿锥齿轮设计、加工提供了一定的参考。本文主要研究内容如下： (1)根据锥齿轮啮合原理，研究了锥齿轮参数化设计和建模过程，建立了三维锥齿轮模型。采用有限元方法，建立了合理的弧齿锥齿轮有限元六面体网格模型，对比和总结了弧齿锥齿轮相关前处理方法和关键设置，为动静态分析做了很好的铺垫。 (2)基于合理的有限元模型，运用锥齿轮接触力学原理，通过有限元软件得出锥齿轮齿根弯曲应力、齿面接触应力分布情况；分析了在一定加载条件下重合度、传动误差、载荷分配系数的计算方法，计算得出啮合传动过程中重合度大小、传动误差曲线以及载荷分配系数曲线，并研究了不同载荷大小对以上各参数值（曲线）的影响。 (3)运用动力学原理，对弧齿锥齿轮动态啮合性能进行了研究。考虑了阻尼、转速、加速启动时间以及负载等因素对于锥齿轮动态啮合性能的影响，得出相关曲线的变化规律，并定性的给出某些参数对弧齿锥齿轮动态性能的影响程度。
[Abstract]:Spiral bevel gears have been widely used in various fields of modern mechanical manufacturing because of the advantages of smooth transmission , strong bearing capacity and so on in the gear transmission of intersecting axes . As the transmission of spiral bevel gears is commonly used in high speed , heavy load and other conditions , the meshing process is complicated . In order to guarantee the reliability , strength and accuracy requirements of the bevel gear transmission , it is necessary to study the dynamic and static meshing characteristics and the influence of the relevant factors on the dynamic static meshing performance . Based on the meshing principle , contact mechanics and dynamic principle of spiral bevel gear , this paper constructs a three - dimensional geometric model of bevel gear and a finite element mesh model to study the dynamic and static characteristics of spiral bevel gear . ( 1 ) According to the meshing principle of bevel gears , the parametric design and modeling process of bevel gears is studied , and a three - dimensional bevel gear model is established . A rational finite element hexahedral mesh model of spiral bevel gears is established by using finite element method . ( 2 ) Based on the rational finite element model , using the theory of contact mechanics of bevel gear , the bending stress and contact stress distribution of bevel gear are obtained through finite element software . The calculation method of coincidence degree , transmission error and load distribution coefficient under certain loading conditions is analyzed , and the influence of different load size on each parameter value ( curve ) is studied . ( 3 ) The dynamic meshing performance of spiral bevel gears is studied by using the dynamic principle . The influence of damping , rotating speed , acceleration starting time and load on the dynamic meshing performance of bevel gears is considered , and the influence degree of some parameters on the dynamic performance of bevel gear bevel gears is given .

【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH132.41

【参考文献】