基于CATIA平台的车身覆盖件特征数据库的建立方法研究

发布时间：2017-12-30 21:36

本文关键词：基于CATIA平台的车身覆盖件特征数据库的建立方法研究　出处：《吉林大学》2016年硕士论文　论文类型：学位论文

更多相关文章： CATIA/CAA 车身覆盖件 特征 数据库

【摘要】：近年来,随着汽车工业的发展趋势越来越迅猛,在机械产品设计过程中所需要选用的标准特征件类别越来越多,数量也越来越大,从一定程度上来说,零件的标准化以及标准化成都已经变成一个国家和一个企业的产品研发水平的重要标志。因此,建立符合国家标准的特征库,并能使该特征库在企业间相互通用,是提高企业设计效率的重要方法,符合企业标准与要求。本文的研究目标是对车身覆盖件特征数据库的建立方法进行研究,通过二次开发技术建立符合国家标准与企业需求的特征件库,针对这一研究目标,本文主要展开以下四方面的研究工作:(一)通过对CATIA的二次开发环境与CAA模块进行分析比较,选定二次开发方法,;(二)对车身覆盖件特证件进行分类与特征模板的建立;(三)进行程序系统的内部编程工作,完成特征库系统的建立;(四)选择某车型侧围外板对所建立的特征库进行实例验证。为了选定二次开发方法,本文首先对每种二次开发方法的工具以及优缺点进行分析比较,结合以往研究经验最终选定应用CAAV5 C++的方式进行二次开发。为明确车身覆盖件种类的分类,本文通过收集各种车型的数据信息,经过整理后将车身覆盖件特征分成14个大类,每个大类又同时细分成不同的小类;结合每种特征类的作用以及特性等方面,给出了特征的具体推荐尺寸以及工艺要求;完成了每种特征的具体建模方法与过程,通过选定的建模方法(UFD)设计了特征模板,包括堆积和输入条件的处理以及参数发布,为特征库的建立奠定了良好基础。为建立车身覆盖件的特征库,本文主要采取的方法是通过二次开发的内部编程来进行,包括命令框、对话框、回调函数等程序代码的编写,以及每个特征件的代码编写,还需要对编写的代码进行激活,然后进行编程内部以及可视外部之间进行设计,使得用户可以在可视端直接对命令进行操作,完成特征库的建立以后,对开发程序进行发布。为了对开发的车身覆盖件特征库进行验证,本文选取侧围外板对特征库进行实例验证。首先,对选定的侧围外板模型通过参数化进行简化处理,可以在特征库中对需要的特征进行选择和调用,与传统的手工建模相比较优势明显,操作简单快速,容易进行修改与参数编辑。本文的研究工作对基于CATIA平台的车身覆盖件特征库的建立提供了科学可行的方法,为二次开发以及特征库在车身覆盖件中的应用提供了科学依据。
[Abstract]:In recent years, with the rapid development of the automobile industry, more and more standard feature categories need to be used in the process of mechanical product design, and the number is also increasing, to a certain extent. Parts standardization and standardization Chengdu has become an important symbol of the level of product development of a country and an enterprise. It is an important method to improve the efficiency of enterprise design and meet the requirements and standards of the enterprise. The research goal of this paper is to study the establishment method of the body panel feature database. Through the secondary development technology to establish the characteristic part library which accords with the national standard and the enterprise demand, aiming at this research goal. This paper mainly carries out the following four aspects of research work: (1) through the analysis and comparison of the secondary development environment of CATIA and the CAA module, the second development method is selected. (2) classifying special documents of body panels and establishing feature templates; (3) carrying out the internal programming work of the program system and completing the establishment of the signature library system; (4) selecting the side outer panel of a vehicle model to verify the established feature library. In order to select the secondary development method, this paper first analyzes and compares the tools, advantages and disadvantages of each secondary development method. Combined with the past research experience, the application of CAAV5 C was finally selected for secondary development. In order to clarify the classification of body panels, this paper collects the data information of various types of vehicle. After finishing, the body panel features are divided into 14 categories, each of which is subdivided into different subclasses at the same time. According to the function and characteristics of each characteristic class, the specific recommended size and process requirements of the feature are given. The specific modeling methods and processes of each feature are completed, and the feature template is designed by the selected modeling method (UFDs), including the processing of stacking and input conditions and the publication of parameters. For the establishment of the signature library laid a good foundation. In order to establish the body panel feature library, the main method adopted in this paper is through the secondary development of internal programming to carry out, including command boxes, dialog boxes. The writing of program code such as callback function, as well as the code writing of each feature, also needs to activate the code written, and then design the code inside and outside of the program. So that the user can operate the command directly in the visual end, complete the establishment of the signature library, release the development program. In order to verify the development of the body panel feature library. In this paper, the side outer panel is selected to verify the feature library. Firstly, the selected side outer board model is simplified by parameterization, and the needed features can be selected and called in the feature library. Compared with the traditional manual modeling, the advantages are obvious, simple and fast. It is easy to modify and edit parameters. The research work in this paper provides a scientific and feasible method for the establishment of body panel signature library based on CATIA platform. It provides the scientific basis for the secondary development and the application of the special library in the body panel.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：U463.82

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