【作者】 裴帮；

【导师】 刘忠明；

【作者基本信息】 机械科学研究院 ， 机械设计及理论， 2004， 硕士

【摘要】 在液压系统中，齿轮泵占很大的比重，它广泛应用于机床、轻工、船舶、石化等各类机械产品的液压系统中。齿轮泵的质量和性能直接影响着机械产品的性能。随着液压系统的不断发展，对齿轮泵的要求日益提高，迫切需要设计、制造出质量更佳的齿轮泵。 随着科学技术的不断发展和应用，新的设计技术——CAD和CAE分析应运而生。同时制造业正在逐步实现信息化，而制造业信息化的起点是设计数字化。为实现齿轮泵设计的数字化，本文开发出了高效、智能化的泵用渐开线齿轮CAD／CAE集成系统。该系统以泵用渐开线齿轮为研究出发点，但它同样适用于一般的渐开线齿轮传动。该系统对于实现渐开线齿轮设计的数字化、智能化、集成化，缩短产品设计周期，提高产品设计质量，具有重要的理论价值和工程意义。本文的主要工作和创新之处如下： (1)基于泵用渐开线齿轮的齿形特征，利用齿轮啮合的基本原理，经过分析、推导，得出了组成齿轮全齿廓的渐开线、过渡曲线以及齿根圆弧的数学方程；在对齿轮啮合过程进行深入分析的基础上，指出了目前使用的渐开线齿轮重合度计算公式不适合用来计算某些参数的齿轮泵的重合度，并给出了适合齿轮泵特征的重合度计算公式。 (2)依据组成渐开线齿轮齿廓的各段曲线的数学方程，利用数值计算方法求出各段曲线之间的交点，确定各段曲线上用来组成齿轮齿廓的有效部分，齿轮齿廓是各段有效曲线依次连接而成的。利用Visual Basic 6.0编程语言在AutoCAD平台上实现了渐开线齿轮齿廓的自动绘制。 (3)建立渐开线齿轮的CAE分析模型，选用ZRCAE作为CAE分析软件，剖析了ZRCAE的输入数据格式，按照此格式，利用CAD设计的计算结果，直接生郑州机械研究所硕士学位论文成CAE分析所需的全部数据文件，然后由ZRCAE读取该数据文件进行分析计算及后处理，真正实现了泵用渐开线齿轮的参数设计和CAE分析的无缝集成，使用户彻底摆脱了齿轮实体造型的束缚，大大提高了设计分析的效率和质量。 (4)利用渐开线齿轮的齿廓，在501 idworkS平台上通过编程实现了渐开线齿轮完全自动的参数化实体造型，为后期的模拟装配和运动仿真奠定了基础。 (5)分析了齿轮泵的性能特征，建立了泵用渐开线齿轮基本参数的优化模型，对齿轮泵的齿轮参数进行了优化，提高了齿轮泵的综合性能。算例计算表明该优化模型正确、合理，进一步提高了齿轮泵的设计水平和效率。更多还原

【Abstract】 Gear pump is used widely in the hydraulic system such as machine tool, light industry, shipping, oil chemicals etc. The quality and capability of gear pump affect the characteristics of machines directly. With the progress of hydraulic system, it is appealing the high quality gear pump. The higher quality gear pump is requested.The new CAD and CAE technologies are appearing with the development of science and technology. At the same time the manufacturing is bringing informationilization into effect. The base of informationilization is digital design. In order to use digital design in the gear pump field, an integrated system of CAD/CAE for involute gear is developed in this dissertation. This system is high efficient and intelligent. Although this system was developed depended on the features of gear pump, it can be used in all kinds of cylindrical involute gear. This system has great significance for realizing digital design, for shortening the time of design, for improving the quality of gear, etc. The main results and the creative ideas are summarized as follows:1. Based on the profile features of involute gear in gear pump, the active profile and the fillet of gear are analyzed according to the mesh theory. The equations of involute profile and fillet are worked out. Based on analysis of the mesh process of gears, it’s pointed out that the traditional calculation formula of involute gear’s contact ratio is not suited for calculating the gear’s contact ratio in the pumps with some parameters, and a suitable formula is offered in this dissertation.2. Depended on the profile equations of involute gear, the intersection points ofthese curves are worked out by numerical method. The effective ranges of these curves are determined by these points. The whole profile can get by linking these effective curves together in proper order. A Visual Basic 6.0 program is developed to draw the whole profile automatically.3. Selected the ZRCAE as a CAE software, the form of input data was dissected deeply. The input data of ZRCAE was gained from the results of CAD calculation for gear. This process realized the seamless integrated of parameters design and CAE for involute gear. This can let designer to get rid of the constraint of modeling of involute gear completely, improves the efficiency and quality of gear design greatly.4. An automatic 3D modeling of involute gear is gained by a Visual Basic program depended on the precise profile and SolidWorks. The 3D modeling is the foundations of dynamic imitation and simulative assemble.5. Referenced other gear pump optimizing calculation and combined the feature of gear pump, a kind of optimizing calculation method of gear pump is put forward. And the optimized model of involute gear for gear pump is built. These can improve the characteristics of gear pump.更多还原