基于UG渐开线斜齿轮参数化建模与修形研究

发布时间：2018-04-27 18:41

本文选题：参数化建模 + 接触分析　；参考：《东北大学》2012年硕士论文

【摘要】：本文首先从齿条加工齿轮的啮合原理出发,推导了渐开线斜齿圆柱齿轮的精确齿廓曲线,进而沿着螺旋线扫描得到渐开线斜齿圆柱齿轮模型,从而实现斜齿轮参数化建模。以UG6.0为建模平台,验证了理论推导的齿廓曲线方程沿着螺旋线扫描生成的斜齿轮能实现参数化,将其各部件按照装配关系集成齿轮啮合系统,并进行了运动仿真和干涉检验,符合实际要求。进一步利用UG表达式生成的EXP文件与VB接口,在VB环境下建立一个可视化齿轮模型界面,通过输入不同基本参数,快速生成新的齿轮模型,实现可视化的参数化斜齿轮建模。鉴于渐开线斜齿轮啮合过程中出现的偏载、应力集中等问题,应当对齿轮进行修形解决该问题。通过对齿轮修形方式及计算方法进行比较与分析,选择了鼓形修形,推导出鼓形齿廓曲线和引导线方程,进而生成鼓形修形后的模型。以考虑歪斜度和轮齿变形为基础,深入研究了齿轮啮合轴平行度和轴承变形对轮齿啮合接触应力和弯曲应力的影响。同时利用UG6.0与ANSYS13.0的无缝数据接口,将在UG6.0软件中生成的装配模型导入ANSYS workbench13.0中,利用ANSYS workbench13.0强大的分析功能,进行接触应力和弯曲应力求解。分别进行了标准啮合的理论计算与ANSYS分析数值的比较以及进行了修形前后的分析比较,并用ANSYS分析了基于齿轮不同轴线夹角和不同轴承跨度对齿轮啮合影响的规律曲线,为对此进行相关生产和研究的人员提供一定的参考。
[Abstract]:In this paper, starting from the meshing principle of gear with rack, the accurate tooth profile curve of involute helical cylindrical gear is deduced, and then the involute helical gear model is obtained by scanning along the helical line, and the parametric modeling of involute helical gear is realized. With UG6.0 as the modeling platform, it is verified that the helical gear can be parameterized when the tooth profile equation is scanned along the helical line. The components of the helical gear are integrated into the gear meshing system according to the assembly relationship, and the motion simulation and interference test are carried out. In line with the actual requirements. Further, using the EXP file generated by UG expression and VB interface, a visual gear model interface is established in VB environment. By inputting different basic parameters, a new gear model is created quickly, and the visual parameterized helical gear modeling is realized. In view of the problems of eccentric load and stress concentration in the meshing process of involute helical gear, the gear should be modified to solve the problem. Through the comparison and analysis of gear modification methods, the drum profile modification is selected, and the drum profile curve and guide line equation are derived, and then the model after drum modification is generated. Based on the consideration of skew degree and gear tooth deformation, the effects of parallelism of gear meshing shaft and bearing deformation on meshing contact stress and bending stress of gear tooth are studied. At the same time, using the seamless data interface between UG6.0 and ANSYS13.0, the assembly model generated in UG6.0 software is imported into ANSYS workbench13.0, and the contact stress and bending stress are solved by using the powerful analysis function of ANSYS workbench13.0. The theoretical calculation of standard meshing is compared with that of ANSYS analysis, and the analysis and comparison before and after modification are carried out, and the law curve of gear meshing based on different axis angle and different bearing span is analyzed by ANSYS. For this related production and research personnel to provide a certain reference.
【学位授予单位】：东北大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH132.413

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