【作者】 马恩凤；

【导师】 李南；

【作者基本信息】 兰州理工大学 ， 机械工程， 2006， 硕士

【摘要】 为了实现齿轮的标准化、系列化、通用化,提高设计质量,我们引入了计算机辅助设计方法及人工智能技术,研制了齿轮精度CAD系统,因为传统的齿轮精度分析及设计既浪费时间又难以保证设计的精度和质量。 我们研制齿轮精度CAD系统,根据齿轮精度要求的初始条件,运用专家系统中的专家知识,一方面对齿轮的传动误差、回转轴位置误差、刀具误差等进行判别,找出齿轮加工中产生各种误差的原因,然后反馈于生产中去,从而进一步提高齿轮的各种精度。另一方面自动确定齿轮各公差组的精度等级、齿轮及齿轮副检验项目的选定及公差值的查找、齿厚上、下偏差代号及侧隙检测项目的确定,最后自动选取各个公差组的检验指标、按照最新国家标准设计的形位公差、尺寸公差、表面粗糙度标注等。我们研制齿轮精度CAD系统,仍然具备AutoCAD2000平台自身的特点,也就是对于设计出的齿轮工作图进行实时编辑和修改。最后,用户可根据自己的需要,在对话框中填入适当的内容,系统可自动生成满足用户要求的图形。 系统的人机界面友好,操作简单方便。该系统的研究为齿轮精度等级分析提供一种高效可靠的方法。该系统采用模块化技术,取得良好的效果,可以根据用户的要求进行扩充,而且结构合理,功能较完善,智能化程度较高,具有一定的独创性,并具有一定的实用价值。它对计算机辅助设计的进一步发展及应用起到一定的作用。更多还原

【Abstract】 To realize gear standard, series ,currency and imorove design quality, we design a gear precision CAD system with the Computer Aided Desigen method and Artificial Itelligent technology. Because the traditional gear precision analysis and design work is not only time-cost ,but also is hard to acquire the precision and quality.Given the initial considerations of gear ,according to the expert knowledge of the expert system in a CAD system,on the one hand ,transmission error ,.rotation axle location error ,cut error are inquired and they are made as feed back information, in order to improve gear processing precision ,on the other hand ,the precision grades of gear tolerance items and gear examination item can be obtained intelligently, finally the checking target of each tolerance items can be chosen automatically .geometrical tolerance,sizetolerance and surface roughness tolerance are inquired and drew. We design a gear precision CAD system that is provided original function yet,i.e.the working graph designed can be modified under AutoCAD2000. Finally,according to the requirement of the users, suitable details are filled in in dialogue frame.The satisfactory precision design results and the working graph can be obtained automatically.With a friendly interface and independence ,the system is easy to be operated. The system provides an efficient and reliable way for gear precision .It adopts units technoligy and acquire favourable effects,in addition the system is enlarged according to the requirement of the users.Its construction is reasonable, function is perfect and intelligence degree is high ,and the system has independent creation and practical application.lt has certain function in the developing and application of Computer Aided Desigen.更多还原