面齿轮时变啮合刚度计算及动态啮合性能研究

发布时间：2018-02-06 06:33

本文关键词： 面齿轮二次开发啮合刚度动态啮合有限元分析　出处：《中南大学》2013年硕士论文　论文类型：学位论文

【摘要】：精确的面齿轮时变啮合刚度是面齿轮传动动力学研究的基础,而面齿轮的动态啮合性能对整机的工作性能有重要影响,因此研究面齿轮的啮合刚度及动态啮合性能是面齿轮传动设计与分析工作中的重要内容。论文研究了基于VB的Catia软件二次开发技术及面齿轮几何建模方法,开发得到一个面齿轮三维几何建模软件,提出一种新的面齿轮时变啮合刚度计算方法,研究了面齿轮动态啮合性能,为面齿轮的设计与应用提供参考。论文主要研究内容如下： 1.基于面齿轮加工原理得到面齿轮理论齿面离散点坐标。以Nurbs曲面理论为基础,开发得到基于Catia软件和VisualBasic语言的面齿轮几何建模软件。 2.基于齿轮动力学基本理论,提出一种通用的齿轮传动时变啮合刚度计算方法。以直齿圆柱齿轮为例,对比分析论文所提方法与IS06336方法得到的齿轮副时变啮合刚度曲线,验证了论文所提方法的正确性。 3.应用论文所提方法得到面齿轮时变啮合刚度曲线,研究发现由于载荷分布不均导致该对面齿轮副啮合刚度最小值出现在三齿啮合区内前后两对轮齿受载相同的位置。 4.研究了载荷及面齿轮轮毂厚度对面齿轮啮合刚度的影响规律,结果表明载荷及面齿轮轮毂厚度对面齿轮啮合刚度的平均值及波动幅值均有重要影响。当面齿轮轮毂较薄,而负载较大时可能出现严重的偏载现象。 5.建立了合理的面齿轮动态啮合性能有限元分析模型,研究转速及负载对面齿轮传动动态啮合性能的影响规律,结果表明：转速越大,动载系数越大,啮合接触冲击越明显,持续时间越长,为高质量面齿轮传动的设计提供了有效的分析方法。 6.采用滚检试验方式检查面齿轮的接触轨迹和区域,并与有限元分析计算得到的接触轨迹及区域进行对比验证,试验结果一致。图74副,表9个,参考文献72篇。
[Abstract]:Accurate time-varying meshing stiffness of face gear is the basis of dynamic research of plane gear transmission, and the dynamic meshing performance of face gear has an important effect on the working performance of the whole machine. Therefore, the research on the meshing stiffness and dynamic meshing performance of face gear is an important part in the design and analysis of face gear transmission. This paper studies the secondary development technology of Catia software based on VB and the geometric modeling method of surface gear. A 3D geometric modeling software for surface gear is developed, and a new method for calculating the time-varying meshing stiffness of surface gear is proposed. The dynamic meshing performance of surface gear is studied, which provides a reference for the design and application of surface gear. The main contents of this thesis are as follows:. 1. Based on the machining principle of surface gear, the discrete point coordinates of tooth surface of surface gear are obtained. Based on the theory of Nurbs surface, the geometric modeling software of surface gear based on Catia and VisualBasic language is developed. 2. Based on the basic theory of gear dynamics, a general method for calculating the time-varying meshing stiffness of gear transmission is proposed. Taking spur cylindrical gear as an example, the time-varying meshing stiffness curve of gear pair obtained by the method proposed in this paper is compared with that obtained by IS06336 method. The correctness of the proposed method is verified. 3. Using the method proposed in this paper, the time-varying meshing stiffness curve of the face gear is obtained. It is found that the minimum meshing stiffness of the opposite gear pair appears in the same position before and after the two pairs of gear teeth are loaded in the three-tooth meshing region due to the uneven load distribution. 4. The influence of load and face gear hub thickness on meshing stiffness of opposite gear is studied. The results show that the mean value and fluctuation amplitude of meshing stiffness of face gear hub thickness are important. However, when the load is large, serious biasing may occur. 5. A reasonable finite element analysis model of dynamic meshing performance of surface gear is established, and the influence of rotational speed and load on dynamic meshing performance of face gear transmission is studied. The results show that the higher the rotational speed, the greater the dynamic load coefficient, the more obvious the meshing contact impact is. The longer the duration is, the more effective analysis method is provided for the design of high quality face gear transmission. 6. The contact track and area of surface gear are checked by rolling test method, and compared with the contact track and area calculated by finite element analysis, the results are in agreement with those obtained by finite element analysis. The results are in agreement with each other: 74 pairs of figs, 9 tables, 72 refs.
【学位授予单位】：中南大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TH132.41

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