摘要：＠杨将新＠胡树根＠吴昭同＠杨世锡￥浙江大学ＣＡＤ／ＣＧ国家重点实验室１引言ＣＡＤ／ＣＡＭ已取得了重大的突破和引入注目的成就，但机械零件的公差设计，在国内基本上还停留在人工选择上，各种ＣＡＤ软件中仅能实现公差的标注；即使在国外已有许多学者开展了计算机辅助公差...

摘要：This paper presents a method for robust tolerance design in terms of Process Capability Indices (PCI) . The component tolerance and the suitable manufacturing processes can be selected based on the real manufacturing context. The robustness of design feasibility under the effect of uncertainties is also discussed. A comparison between the results obtained by the proposed model and other methods indicates that robust and reliable tolerance can be obtained.

摘要：Tolerance is imperative for seamless integration of CAD/CAM(Computer Aided Disignd/Computer Aided Manufacture) which is just a text attribute and has no semantics in present CAD systems. There are many tolerance types, the relations between which are very complicated. In addition, the different principles of tolerance make study of tolerance difficult; and there may be various meanings or interpretation for the same type of tolerance beeanse of the literal definition. In this work, latest unambiguous mathematical definition was applied to study, explain and clarify: ( 1 ) the formation and representation of tolerance zone, and (2) the formation and representation of variational elements ; after which, the mathematical models of syrmmetry of different tolerance principles and different interpretations were derived. An example is given to illustrate the application of these models in tolerance analysis.

摘要：本文得出了计算机辅助公差优化设计中有关最优解存在条件的几个引理；引入和论证了公差优化设计中有关目标函数、约束函数性质等引理；并给出了新的机加工成本──公差模型．

摘要：本文从机械产品的公差—成本模型出发，研究了采用简化积分域法和蒙特卡罗模拟法进行计算机辅助公差优化设计的方法，并给出了与传统的等公差概率法进行对比的实例计算结果．这对于开展公差ＣＡＤ，促进ＣＡＤ／ＣＡＰＰ／ＣＡＭ的集成具有重要意义．

摘要：探讨了敏捷制造的方法论和关键技术，提出了敏捷制造的总体技术体系，该体系包括敏捷制造方法论和敏捷制造综合基础两大部分：前者包括敏捷制造哲理、敏捷制造描述体系和敏捷制造实施方法三大部分，后者包括敏捷制造的三层基础结构（信息基础结构、组织基础结构和智能基础结构）和四类使能技术（敏捷制造信息服务技术、敏捷管理技术、敏捷设计技术、可重组可重用的制造技术），为敏捷制造的实施提供了一个指导性框架。

摘要：以形状要素、零件、部件三种层次的结构单元为基础，引入零部件母图技术，研究了基于结构单元的产品建模原理及实现方法。采用面向对象技术构造了结构单元，在其内部实现了设计数据和数据关系的封装。通过在关系型ＣＡＤ平台上的建模实践，对所提出的理论与方法进行了验证。