【作者】 孙晓非；

【导师】 刘明新；

【作者基本信息】 辽宁工程技术大学 ， 机械设计及理论， 2004， 硕士

【摘要】 制造业的竞争日益激烈，降低产品成本、提高产品质量和缩短产品开发周期已成为企业生存和发展的关键。在这种形势下，并行工程作为一种有效的解决方案正在逐步发展起来。并行工程环境下，DFA是一项重要的使能技术。DFA这一术语，最早是山美国马萨诸塞大学(University of Massachusetts)的G. Boothroyd和P. Dewhurst提出的，当时主要采用的是计算评分的方法来对产品的可装配性进行定量的评价。随着并行工程研究的逐步深入，DFA技术也在不断的发展之中，它通过在产品设计过程中利用各种技术手段，如分析、评价、规划、仿真等，充分考虑产品的装配环节及其相关的各种因素的影响，在满足产品性能与功能的条件下改进产品装配结构，使设计出来的产品是可以装配的，并尽可能降低装配成本和产品总成本。 全文共分成六章。具体内容如下： 第一章对DFA技术的起源及传统DFA技术的不足和并行工程下的DFA技术作了阐述。接着对国内外研究的现状作了一个回顾。 第二章对并行工程的概念、产品设计的串行方式及并行方式、并行度的概念及量度方法作了深入地阐述。在此基础上，对产品并行设计的模式作了探讨。最后又对CONSENS中的软件实现平台及DFX工具作了简单介绍。 第三章首先对并行工程下的产品装配模型作了阐述。接着在此基础上又对装配建模的一些基本策略和装配建模的两种设计过程——Bottom—Up和Top—Down进行了探讨。最后又对基于并行工程的产品装配模型的实现作了一些论述。 第四章首先对产品的可装配性评价作了一下阐述，并在此基础上给出了一些可装配性评价的方法和相应的算法。最后对装配公差对产品可装配性的影响作了详细的阐述，并给出了产品的总装配成本计算的方法。 第五章结合具体实例对DFA技术的工程应用进行了研究。 第六章是总结和展望，对全文工作进行了总结，并归纳了论文的创新点，对进一步的研究，提出了设想和展望。更多还原

【Abstract】 The intensive competition in manufacturing impels enterprises to reduce the cost, improve the quality and shrink the time of product development. To achieve these goals, the Concurrent Engineering(CE) is being applied in many companies. The Design For Assembly (DFA) is an important enabling technology in Concurrent Engineering. G. Boothroyd and P. Dewhurst of University of Massachusetts firstly gave this terminology when they applied a method to evaluate the performance of product assembly design. DFA evaluation method is still developing with the deep research of Concurrent Engineering. Taking full consideration of the factors effecting on product assembly design and satisfying the performance of product, DFA in Concurrent Engineering applies many techniques like analysis, evaluation, planning and simulation in the product development process to improve the quality of product assembly design and reduce the cost in the assembly process and the total cost of product.The dissertation is divided into six chapters and the detail contents are summarized as follows:Chapter one is introduction. The origin of DFA and the sufficient of traditional DFA evaluation method and DFA in Concurrent Engineering are discussed. The related research on this field in home and abroad is stated.Chapter two discusses the Concurrent Engineering, including the concept of CE, the sequential and concurrent product design process and the concept and measurement of concurrent degree. Based on these statements, the mode of concurrent product design is researched. A sample in the application of Concurrent Engineering桟ONSENS is presented including the supporting platform and DFX tools.Chapter three deeply researches the product assembly model based on Concurrent Engineering. On the basis of these discussions, some methods of assembly modeling and the "Bottom-Up" and "Top-Down" design methods and process are researched. The product assembly modeling technique based on Concurrent Engineering is also researched.Chapter four discusses the facets of product assembly evaluation. Based on these statements, some methods and related algorithm are given. The effect of assembly tolerance on product assembly is researched in detail and the algorithm and program of total assembly cost is presented.Chapter five researches on the application of DFA method.The last Chapter is conclusion and outlook. The achievements of the dissertation are summarized, and the innovations are pointed. The future research works are put forward.更多还原