陶瓷齿轮参数化设计与数控加工方法研究

发布时间：2018-03-12 22:47

本文选题：陶瓷齿轮　切入点：参数化设计　出处：《陕西科技大学》2013年硕士论文　论文类型：学位论文

【摘要】：陶瓷齿轮具有强度高、硬度大、耐腐蚀、耐高温抗氧化、热膨胀系数低等优点，在机械、化工、航空航天等领域中的应用越来越广泛。陶瓷齿轮作为机械传动件，其结构的相似性与设计的重复性适合进行参数化设计。陶瓷齿轮的材料特性与普通金属齿轮存在较大差异，决定了其加工工艺与加工过程的复杂性。本课题主要研究了陶瓷齿轮参数化设计方法、构建陶瓷齿轮参数化系统，并探讨了陶瓷齿轮电火花线切割加工工艺，模拟仿真加工了陶瓷齿轮。本文研究的内容可以归纳如下： 1）通过运用Pro/E自带的Program功能，对陶瓷齿轮进行参数化建模，得到不同类型的陶瓷齿轮模型。 2）运用Pro/Toolkit工具对Pro/E的二次开发方法进行了研究，包括Pro/Toolkit菜单界面的设计、UI对话框设计、MFC技术、资源文件的编写以及应用程序的注册运行等。将已经建立好的参数化模型与参数化程序相结合，实现了陶瓷齿轮的参数化设计。 3）分析了陶瓷齿轮与普通齿轮加工方法的区别，介绍了普通齿轮加工的仿形法与范成法，讲述了电火花线切割的加工原理与特点。并对陶瓷材料的电火花线切割加工工艺进行探讨，得到了主要工艺参数对工艺指标的影响，为陶瓷齿轮数控加工参数的选择提供了依据。 4）运用Pro/E的Pro/NC模块对陶瓷齿轮进行数控加工，通过制作模型的建立与参数的设置，自动生成了刀具路径文件，经过适当的后置处理，刀位文件转换成了NC加工程序。本课题的创新之处有以下三点： 1）逆向建立陶瓷齿轮参数化模型，先全部确定齿轮各个参数之间的关系，然后再对齿轮进行建模。参数化建模的齿轮类型比较全面，并对一些不常见的齿轮进行了参数化建模，如：摆线针轮。 2）对陶瓷齿轮的加工工艺进行了探讨，通过单变量的实验方法，得到各个工艺参数与工艺指标之间的关系，为数控加工参数的选择提供了参照。 3）通过Pro/NC模块对陶瓷齿轮进行数控加工模拟仿真，，实现了陶瓷齿轮的CAD、CAM系统的集成，同时也实现了NC编程过程的自动化。
[Abstract]:Ceramic gears have many advantages such as high strength, high hardness, corrosion resistance, high temperature and oxidation resistance, low coefficient of thermal expansion and so on. They are widely used in mechanical, chemical, aerospace and other fields. The similarity of structure and repeatability of design are suitable for parametric design. This paper mainly studies the parameterized design method of ceramic gear, constructs the parameterized system of ceramic gear, and probes into the WEDM process of ceramic gear. The ceramic gear was manufactured by simulation. The contents of this paper can be summarized as follows:. The main results are as follows: 1) by using the Program function of Pro/E, the parametric modeling of ceramic gears is carried out, and different types of ceramic gear models are obtained. 2) the second development method of Pro/E is studied by using Pro/Toolkit tools, including the design of Pro/Toolkit menu interface and the design of UI dialog box. The parametric design of ceramic gears is realized by combining the established parameterized model with the parameterized program. 3) the difference between ceramic gear and common gear is analyzed, and the copying method and the forming method of common gear are introduced. This paper describes the principle and characteristics of WEDM, discusses the WEDM process of ceramic materials, and obtains the influence of main technological parameters on the process index. It provides a basis for the selection of NC machining parameters of ceramic gears. 4) NC machining of ceramic gear is carried out by using Pro/NC module of Pro/E. The tool path file is automatically generated by establishing the model and setting up parameters. After proper post processing, the cutter position file is converted into NC machining program. The innovations of this topic are as follows:. 1) setting up the parametric model of ceramic gear in reverse, first determining the relationship between the various parameters of gear, then modeling the gear. The gear type of parameterized modeling is more comprehensive, and the parametric modeling of some unusual gears is carried out. For example: cycloidal needle wheel. 2) the machining technology of ceramic gear is discussed, and the relationship between each process parameter and process index is obtained through the experiment method of single variable, which provides a reference for the selection of NC machining parameters. 3) the NC machining simulation of ceramic gear is carried out by Pro/NC module, which realizes the integration of the CAD / CAM system of ceramic gear and the automation of NC programming process.
【学位授予单位】：陕西科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TH132.41;TP391.72

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