基于安装误差敏感性的直齿锥齿轮齿面设计与实验分析

发布时间：2018-05-14 20:19

本文选题：直齿锥齿轮 + 安装误差　；参考：《河南科技大学》2014年硕士论文

【摘要】：本文以直齿锥齿轮修形齿面安装误差敏感性分析为研究对象，首先依据刨齿展成法及齿轮啮合原理建立了直齿锥齿轮修形齿面的齿面方程并编制了相应的程序。分别进行了理想状态和含有安装误差情况下修形齿面直齿锥齿轮的TCA和有限元静态接触分析。论文主要研究的内容如下： 1设计直齿锥齿轮的几何参数，进行了直齿锥齿轮的齿向修形、齿廓修形等修形方式并建立了未修形、齿向修形、齿廓修形及综合修形的直齿锥齿轮的齿面方程。在此基础上算出来了未修形、齿向修形、齿廓修形及综合修形的直齿锥齿轮的齿面点。 2建立含有轴向错位误差、轴线分离误差、轴交角变化误差的直齿锥齿轮修形齿面坐标系。进行直齿锥齿轮修形齿面安装误差敏感性分析：提出差曲面的Gauss曲率、计算啮合点Gauss曲率。通过齿面安装误差敏感性的优化设计，得到了对安装误差敏感性低的齿面。 3介绍了有限元软件的理论基础，编制了理想和含有安装误差的直齿锥齿轮修形齿面的有限元节点、单元模型。在此基础上编制了直齿锥齿轮接触的三维有限元模型、创建接触对、施加边界条件等过程的APDL命令流语言程序。然后运用ANSYS有限元软件分析了理想状态和含有安装误差下的修形齿面直齿锥齿轮静态接触应力，进而验证了理论的正确性。 4根据生成的齿面点创建了直齿锥齿轮修形齿面的三维精确模型，采取了UG仿真加工中固定轴曲面轮廓的铣削方式对直齿锥齿轮大、小轮齿面进行了精加工的模拟加工，通过自己建立的后处理生成了fanuc系统数控机床的数控程序，这样在实验加工时机床能够识别，，从而为用立式四轴联动的FA-3225H型数控龙门铣床对直齿锥齿轮大轮、修形小轮齿面进行实验加工奠定了基础。 5用立式四轴联动的FA-3225H型数控龙门铣床对直齿锥齿轮大轮、修形小轮齿面进行了精加工。然后将加工好的直齿锥齿轮大、小轮安装在Y9550滚检机上，在满足安装距及不同安装误差下进行滚检实验，由实验得到的接触区位置分析出修形直齿锥齿轮小轮对安装误差性不敏感，从而验证了理论研究的正确性。
[Abstract]:In this paper, the sensitivity analysis of tooth surface installation error of straight bevel gear is studied. Firstly, based on the planing generation method and gear meshing principle, the tooth surface equation of straight bevel gear is established and the corresponding program is compiled. The TCA and finite element static contact analysis of modified straight bevel gears with ideal state and with installation error are carried out respectively. The main contents of this thesis are as follows: The main contents are as follows: 1. The geometric parameters of straight bevel gear are designed. The tooth profile modification and tooth profile modification of straight bevel gear are carried out, and the tooth surface equations of unmodified, tooth profile modified, tooth profile modified and integrated modified straight bevel gear are established. On this basis, the tooth surface points of straight bevel gear with unmodified, tooth profile, tooth profile and comprehensive modification are calculated. (2) the modified tooth surface coordinate system of straight bevel gear with axial misalignment error, axis separation error and axis angle change error is established. Sensitivity analysis of mounting error of straight bevel gear surface is carried out: Gauss curvature of difference surface is proposed and Gauss curvature of meshing point is calculated. The tooth surface with low sensitivity to installation error is obtained by optimizing the sensitivity of tooth surface installation error. 3. The theoretical basis of the finite element software is introduced, and the finite element model of the modified tooth surface of the straight bevel gear with ideal and installation errors is developed. On this basis, a three-dimensional finite element model for the contact of spur bevel gears is developed, and a APDL command flow language program is developed for the process of creating contact pairs and applying boundary conditions. Then the static contact stress of modified straight bevel gear in ideal state and with installation error is analyzed by using ANSYS finite element software, and the correctness of the theory is verified. 4 according to the generated tooth surface point, the three-dimensional accurate model of the modified tooth surface of straight bevel gear is established, and the milling method of fixed axis curved profile in UG simulation machining is adopted to simulate the finishing machining of straight bevel gear with large tooth surface and small gear tooth surface. The numerical control program of fanuc system NC machine tool is generated through the post processing established by oneself, so that the machine tool can be recognized in the experimental processing, so that the straight bevel gear big wheel is opposite to the FA-3225H type NC gantry milling machine with vertical four-axis linkage. The experimental processing of the tooth surface of the modified small wheel has laid the foundation. 5. The tooth surface of straight bevel gear is refined by using vertical four axis linkage FA-3225H CNC gantry milling machine. Then, the machined straight bevel gear is installed on the Y9550 rolling inspection machine, and the rolling inspection experiment is carried out under the conditions of satisfying the installation distance and different installation errors. The position of the contact area obtained from the experiment shows that the modified bevel gear is insensitive to the installation error, which verifies the correctness of the theoretical research.
【学位授予单位】：河南科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TH132.41

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