导　　师： 陈婵娟

学科专业： 080202

授予学位： 硕士

作　　者： ;

机构地区： 陕西科技大学

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。 Since the ceramic gear has so many advantages such as high strength,corrosion resistance, resisting to high temperature and oxidation, low thermalexpansion coefficient, and so on, it is applied more and more in the field ofmechanical, chemical, aerospace and others. As mechanical transmission parts,the structural similarity and the designing repeatability of ceramic gear are bothfit for parametric design. There is big difference in material characteristicbetween ceramic gear and the common metallic gear, so the machiningtechnologic and the machining process are more complicated. In the thesis theauthor mainly researches the designing method, builds the parametric system,probes into the wire cutting process, and simulates the manufacturing process. The research contents of this paper can be summarized as follows: 1. Though the program function in Pro//E software, the author firstly buildsthe parametric mode on ceramic gear, and obtains several different patterns. 2. The author also does much study on the secondary development of Pro//Emethod by using the Pro//Toolkit tool, such as designing of the Pro//Toolkit menuinterface, UI dialog box, MFC technology, writing of the resource files,application of registration operation, and so on. 3. Then the author analyzes the difference of machining method betweenthe ceramic gear and common gear, introduces two methods of common gearmachining, expounds the machining principles and characteristics of sparkcutting, and obtains the main process parameters to provide the basis to themachining parameter choosing of ceramic gear. 4. At last the author simulates the machining process of the ceramic gear bythe Pro//NC mode of the Pro//E software, then automatically generates the cutterpath file, and transforms into NC machining program after appropriate postprocessing. There are three points of the innovation in this subject as follows: 1. The reverse thinking of setting up the ceramic gear parametric model, atfirst determines the relationship between the various parameters of gear, and thenbuilds the modeling. Since the gear modeling patterns are comprehensive, theycan be used in some unusual gears, for example, the cycloid gear. 2. The discussion of the machining process to ceramic gear, includes theexperiment of single variable method, obtaining the relationship between thevarious processing parameters and processing index, and provides the referencefor the selection of numerical control machining parameters. 3. The integration of CAD and CAM system of the ceramic gear, though thesimulating machining process to the ceramic gear by Pro//NC mode, at the sametime achieves the automation of the NC programming.

关 键 词： 陶瓷齿轮 参数化设计 电火花线切割

分 类 号： [TH132.41 TP391.72]

领　　域： [机械工程] [自动化与计算机技术] [自动化与计算机技术]