【作者】 刘保军；

【导师】 杨将新； 曹衍龙；

【作者基本信息】 浙江大学 ， 机械制造及其自动化， 2004， 硕士

【摘要】 本文在分析国内外计算机辅助公差设计技术的发展历史和研究现状的基础上，结合国家自然科学基金项目“基于产品几何技术规范的集成公差设计理论与方法(50275136)”以及浙江省自然科学基金项目“基于稳健性和全过程成本的公差设计系统(500115)”和“面向CAPP的工序公差设计研究(502016)”，根据面向制造设计思想，开展了基于制造资源的公差可制造性评价及其成本模型的研究。 第一章：介绍了计算机辅助公差设计(CAT)的发展历程与研究现状；综述了计算机辅助公差设计要解决的部分关键技术；提出了本文的研究内容和总体框架。 第二章：分析了计算机辅助公差设计对制造资源的信息需求，研究了制造资源在计算机中表示的数据模型，并利用面向对象技术，建立了面向对象的制造资源信息模型，构建了制造资源数据库。 第三章：分析了公差可制造性的含义，从制造装备约束、工艺装备约束、工艺技术约束和人力资源约束四个方面对公差可制造性的技术性评价指标进行了研究，提出了公差可制造性评价方法。 第四章：在分析现有的加工成本-公差模型的基础上，建立了加工成本-公差模型数据库。提出了基于模糊神经网络的面向制造资源环境的加工成本-公差模型。 第五章：利用稳健设计思想，分析了影响成本及其稳健性的关键因素；在此基础上提出了一种公差-成本稳健性分析方法，并进行了实例验证。 第六章：在SolidWorks 2003平台上开发了基于制造资源的计算机辅助公差可制造性评价原型系统，并对其功能作了介绍。 第七章：总结了本文的主要研究内容，对计算机辅助公差设计应该进一步开展的工作进行了探讨与展望。更多还原

【Abstract】 On the basis of comprehensive analysis for recent research status of computer-aided tolerancing, binding projects supported by National Natural Science Foundation of China (50275136) and Natural Science Foundation of Zhejiang (500115, 502016), the methods of manufacturability evaluation of tolerance and the cost-tolerance models based on manufacturing resources are studied.In chapter 1, the important role of computer-aided tolerancing in modern manufacture and research status on key theories and technologies of the region are summarized. The main contents and general structure scheme of this dissertation are given.In chapter 2, information model of manufacturing resources is studied. The object-oriented database of manufacturing resources is established. The database can supply the information that is needed in tolerance design.In chapter 3, the contents of the manufacturability evaluation of tolerance is analyzed, for example: the restriction of manufacturing equipments, the restriction of processing equipments, the restriction of processing technology and the restriction of labor resources. A useful manufacturability evaluation method of tolerance is presented.In chapter 4, existing cost-tolerance models are analyzed. A new cost-tolerance model, which closely links with real technological process, is built using fuzzy neural networks.In chapter 5, the key factors that influence the tolerance cost and its robustness are analyzed. A method of analyzing the robustness of the tolerance cost is presented. An example is studied to illustrate the method at last.In chapter 6, a prototype system of tolerance manufacturability evaluation based on manufacturing resources is presented on SolidWorks.In chapter 7, the important results and conclusions of the dissertation are summarized and the future research on compute-aided tolerancing is prospected.更多还原