【作者】 张帆；

【导师】 张友良；

【作者基本信息】 南京理工大学 ， 机械制造及其自动化， 2005， 博士

【摘要】 产品开发能力是决定企业竞争能力的关键因素，其中产品的装配设计活动更具有突出的重要性。复杂产品的开发是群体人员协同工作的结果，在产品的装配设计活动表现的尤其明显。多学科人员通过协作，共同完成整个产品的装配设计、规划与分析任务。研究协同数字化预装配技术有利于在设计阶段及时发现设计和规划中的问题与缺陷，并加以解决。从而使企业能够以更短的时间、更高的质量、更低的成本和更好的服务质量来赢得市场竞争，具有重要的理论及现实意义。本论文针对协同数字化预装配系统的特点和技术需求，在构建协同数字化预装配系统的体系结构的基础上，重点研究协同数字化预装配系统所需要的数字化产品装配模型技术、协同环境下的装配信息交换技术以及构建协同数字化预装配环境的关键技术等内容。 本文首先介绍数字化设计制造、网络化协同开发等先进制造技术背景。在此基础上，阐述协同数字化预装配技术的概念。根据协同数字化预装配系统的特点和需求，在协同开发环境框架的基础上提出协同数字化预装配系统框架。总结国内外在协同数字化预装配技术研究成果，从装配建模技术、装配信息交换技术、装配环境技术、装配规划与分析技术四个方面系统分析协同数字化预装配的关键技术研究现状和发展的趋势，提出实现协同环境下数字化预装配系统所需要研究的关键技术。确定了论文的研究的方向。 在提出协同数字化预装配系统对装配信息需求的基础上，对装配信息的层次化特性进行探讨。根据装配信息的层次化特点建立了可重构装配模型，并且提出装配模型的重构算法以维护在装配信息重构过程中的装配信息的正确性与一致性，为协同数字化预装配提供可靠的信息保障。应用XML标记语言描述可重构装配模型，并利用XML标准提供的技术方法实现装配模型的交换处理与部分信息重构，为协同数字化预装配系统提供信息交换基础。 根据协同数字化预装配环境的技术需求，提出基于几何层、运动层和行为层的三层环境框架，给出相应的技术解决方法。重点解决了环境的几何信息重构和行为控制处理方法，为数字化预装配提供可视化、可操控的三维环境。 依据本文提出的协同数字化预装配系统关键技术和基于组件的开发方法开发了一个协同数字化预装配系统原型CoDPAS。文章的最后介绍了该原型的实现方法和运行实例。更多还原

【Abstract】 Product development capability is the key element which decides the competition level of enterprises, and the assembly design activities of products are very important for it. The assembly design is the result of collaboration, in which developers coming from multiple disciplines accomplish the whole design, planning and analysis task cooperatively. The research of collaborative digital pre-assembly techniques has great value in both theory and practice. It can find out and solve design and planning problems during design period, thus enterprises can win market competition by supplying products with shorter time, better quality, lower cost and better service. According to the features and technical requirement, the paper puts out the architecture of collaborative digital pre-assembly system. Then on the basis of the architecture, the techniques of digital product assembly model, assembly information exchange, and other key techniques for constructing digital assembly environment are researched respectively.The paper introduces the advanced manufacturing technology background such as digital design and manufacturing, networked collaborative product development firstly. Then the concepts of collaborative digital pre-assembly techniques are presented. Furthermore, the frame based on collaborative development environment frame is put forward. According to the analysis of the research status and development trends, the key techniques of digital pre-assemble and the research direction of the paper are put out.On the basis of the assemble information requirement of the collaborative digital pre-assembly system, this paper discusses the layered attributes of assembly information. Afterwards, a reconfigurable assembly model is created and a reconfiguration arithmetic is presented to make assembly information correct and coherent. Furthermore, the reconfigurable assembly model is described by XML, and some information reconfiguration and exchange are realized through applying XML techniques. Based on the technical requirement, a three-layer (geometry layer, kinematics layer and behavior layer) environment frame and the corresponding technical solution are given out. Also geometry information reconfiguration and behavior control methods are presented to create a visual, operable three-dimensions environment.In the end, the key techniques in this paper are illustrated by a collaborative digital pre-assembly prototype system, which is developed by COM techniques. The implementation of the prototype and application instances is also put out.更多还原