计算机辅助公差分析与设计计算研究

【作者】 刘超；

【导师】 徐诚； 方峻；

【作者基本信息】 南京理工大学 ， 机械设计及理论， 2008， 硕士

【摘要】 在现代产品设计中,随着计算机辅助设计开发技术(CAD)的发展成熟,作为控制产品系统精确度和可靠性的关键技术——计算机辅助公差分析与设计还处在由人工向计算机化发展的初级阶段,这就造成了目前计算机辅助公差分析与设计的现状无法与CAD/CAM和CIMS的发展相适应。特别是在军工系统中,自动武器在设计和生产定型时都需要成套的尺寸链计算书,如何方便、快捷、准确地运用计算机软件进行尺寸链计算,生成成套的尺寸链计算书,成为提高自动武器的研发能力,缩短其研制周期必须得到解决的重要问题。本文针对尺寸链计算中的一些关键问题,在研究学习尺寸链基础知识之上,提出以Visual Studio 2005为平台的尺寸链分析与设计计算软件的整体框架;研究了运用UG二次开发人机交互生成尺寸链数据的技术,给出与UG进行数据交互的方法;给出用VC++调用Matlab计算引擎来进行计算分析的方法;给出公差查询的数据库的详细设计方法,并形成能够满足软件要求、操作简单实用的功能模块;深入研究讨论公差分析设计计算软件的一些关键模块,开发出能够初步使用的模块,为软件的下一步完善提供了坚实的基础;开发完成了尺寸链分析与设计计算软件的一些辅助模块,特别实现了CAD图的通用查看功能和尺寸链文档的设计功能,使用户更加方便地校核尺寸链图,解决了繁重的尺寸链文档制作问题。更多还原

【Abstract】 In the modern product designing, the computer-aided designing (CAD) technology has developed to mature. As the key technology of controlling accuracy and reliability of product - Computer-Aided Tolerancing(CAT), however, is still in the im’tial stage of developing from manual work to computer-aided work, which has caused its current status quo could not be compatible with CAD/CAM and CIMS’ development. Especially in the military system, designing automatic weapons and producing models all need dimension-chain calculating document. How to use computer to calculate the dimension-chain conveniently, fast and exactly, and to make the dimension-chain calculating document is the important issue of improving automatic weapons’ research capabilities and shortening their development cycle .This paper aims at the key issues of dimension-chain calculation, according to the study on the basic knowledge of dimension-chain, we have developed the dimension-chain calculating software framework which was built on Visual Studio 2005. Also we have taken research on the technology of developing the UG system secondarily to generate dimension-chain data with man-machine interaction, and given the method of data exchanging with UG. We have taken research and developed the technology of using VC++ to call on the professional Matlab computing software to complete the calculation. We have given the detailed method of the database of tolerance inquiry, and formed the functional module which can meet the software’s requirements and is simple for operating. We have taken deeply research on the key modules of the software, and preliminarily realized some modules which provided the foundation for the next step in improving the software. We have developed some auxiliary modules of the dimension-chain calculating software. Especially we have developed the function of commonly looking about the CAD drawings and the function of making dimension-chain calculating document so that users could check dimension-chain more conveniently. And the functions also can solve the heavy work in the making of dimension-chain calculating document.更多还原