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工程设计KBE系统(Ⅰ):概述 总被引:19,自引:2,他引:17
计算机辅助设计软件主要集中在辅助绘图功能 ,缺乏协助工程师提高设计效率的能力。本文提出了一种新的工程设计 KBE系统概念 ,并对其关键技术 (知识系统 ,知识获取 ,产品建模和分析技术 )进行了详细的论述。 KBE系统具有以下优势 :基于 AI技术建立与应用有关的设计环境 ;集成知识获取 (即数据挖掘 )的方法 ,使系统能够动态地建立各种领域知识。通过对注塑模模架设计过程的分析 ,给出了模架设计 KBE系统的数据流图和基本框架 ,使该系统在实际应用中能够有效地提高设计效率 相似文献
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Y. L. Tu S. Q. Xie J. J. Kam 《The International Journal of Advanced Manufacturing Technology》2006,29(5-6):499-510
To shorten the product development cycle time and reduce the cost at the same time, which is very critical for the survival
of those small and mid-sized one-of-a-kind production (SMOKP) companies, various computer communication, simulation and computer
aided engineering and management techniques have been widely used in these SMOKP companies. However, according to our study,
the applications of these advanced computer technologies in these SMOKP companies are lack of system integration and synergy,
which result in communication errors, reworks, duplications and hence a longer product development lead time and a higher
cost. To solve this problem, an inter/intranet based computer aided rapid product development system is presented in this
paper. This system consists of a number of inter/intranet based computer models or subsystems for supporting rapid development
of a one-of-a-kind product. It also employs a novel concurrent product development strategy called “prototype based incremental
product development strategy” and an integrated product data structure called “product production structure”. Some industrial
implementations of the proposed system, product development strategy and product data structure are also reported in the paper. 相似文献
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Y.L. Tu S.Q. Xie J.J. Kam 《The International Journal of Advanced Manufacturing Technology》2006,29(5):499-510
To shorten the product development cycle time and reduce the cost at the same time, which is very critical for the survival
of those small and mid-sized one-of-a-kind production (SMOKP) companies, various computer communication, simulation and computer
aided engineering and management techniques have been widely used in these SMOKP companies. However, according to our study,
the applications of these advanced computer technologies in these SMOKP companies are lack of system integration and synergy,
which result in communication errors, reworks, duplications and hence a longer product development lead time and a higher
cost. To solve this problem, an inter/intranet based computer aided rapid product development system is presented in this
paper. This system consists of a number of inter/intranet based computer models or sub-systems for supporting rapid development
of a one-of-a-kind product. It also employs a novel concurrent product development strategy called “prototype based incremental
product development strategy” and an integrated product data structure called “product production structure”. Some industrial
implementations of the proposed system, product development strategy and product data structure are also reported in the paper. 相似文献
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Development of a Remote Collaborative Forging Engineering System 总被引:2,自引:2,他引:2
J. P. Tsai Y.-C. Kao R. S. Lee 《The International Journal of Advanced Manufacturing Technology》2002,19(11):812-820
The ever-growing demand for high-quality products with lower cost and shorter time-to-market is a challenge in today’s global
market. This paper presents a methodology for merging the new technologies of networking and multimedia, with a conventional
forging system to form a remote collaborative forging engineering system. The activities of conventional forging engineering
design and manufacturing processes planning were analysed and a structural model is proposed for forging enterprises to investigate
and improve their engineering activities. The synergy of networking and multimedia technologies is adopted in communicating
and coordinating the activities of the engineers of a multinational enterprise dispersed in different locations, using computer
supported cooperative work. For the next generation forging engineering environments, the concept of a remote collaborative
forging engineering system provides a new approach and strategy to enhance their competitive advantages; and it also provides
a fast, economical and experience-sharing method for the enterprises. An industrial example is used to illustrate the proposed
system. 相似文献
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CAD技术正向着开放、智能、分布和支持多用户协同设计方向发展。从产品生命周期的视角,讨论了基于封装的知识驱动协同设计系统的构建方法及其实现框架:详细研究了在基于知识的工程环境下实现知识驱动协同设计的关键技术。建立了知识驱动产品协同开发系统:断路器应用实例表明,知识驱动产品协同开发方法及其原型系统,能够有效地利用企业已有的知识资源,创造有竞争力的产品。 相似文献
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在实物零件数字化过程中,截面点云是比较常见的一种表现形式。由截面点云拟合截面曲线,进而得到零件曲面在实践中有着广泛的应用。曲面的曲率反映了曲面的几何属性,也是进行质量评估以及产品设计的关键技术之一。通过计算机图形显示技术,对拟合后的曲面进行曲率可视化分析,不仅可以直观地评价曲面的光顺情况,也可显著地提高工作效率,为工作人员提供了一种可视化手段。以叶片为研究对象,实验表明:曲率彩色云图能使用户方便地了解整体及局部的曲率分布信息,便于用户进行计算机辅助设计、改善曲面的设计质量等。 相似文献
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针对机械产品,首先介绍新产品开发中计算机辅助创新技术;而后阐述针对用户需求的快速响应关键技术,包括计算机辅助模块化技术,基于FEM的变量化结构快速优化技术,基于知识工程(KBE)的特定产品快速开发系统构建,基于CAX的快速设计/制造系统的集成,以及特定机械产品快速设计/制造软件系统的开发工具研究。最后以实例来介绍此技术的应用状况,以此来阐述产品快速设计/制造技术开发的可行性、必要性及其模式。 相似文献
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产品模型是产品设计、制造的基础,存在于产品的全生命周期中。协同、并行的产品设计与制造需要与之相适应的建模系统。本文在总结了目前流行的一些产品建模系统后,提出一种适应于协同设计的建模方法;引入形状特征的概念,完成产品的形状特征建模;采用特征转换和映射工具将产品的形状特征模型转换为工程特征模型并映射到不同领域的应用中,以实现产品的协同设计与制造。 相似文献
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Gongliang Jiang Hong-Zhong Huang Xianfeng Fan Qiang Miao Dan Ling 《Journal of Mechanical Science and Technology》2006,20(10):1534-1540
Concurrent Engineering (CE) is a popular method employed in product development. It treats the whole product design process
by the consideration of product quality, cost, rate of progress, and demands of customers. The development of computer and
network technologies provides a strong support to the realization of CE in practice. Aiming at the characteristics of CE and
network collaborative design, this paper built network collaborative design system frame. Through the analysis of the network
collaborative design modes based on CE, this paper provided a novel network collaborative design integration model. This model
can integrate the product design information, design process, and knowledge. Intelligent collaboration was considered in the
proposed model. The study showed that the proposed model considered main factors such as information, knowledge, and design
process in collaborative design. It has potential application in CE fields. 相似文献
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并行工程产品开发过程的广义模型 总被引:4,自引:0,他引:4
并行工程与传统开发方式的本质区别在于它把计算机辅助的产品开发过程当作一个集成的,并行的过程,本文以多面向广义建模方法学的思想,提出了建立并行工程产品开发过程的途径,着重讨论了其广义模型的各个侧面视图的联系。 相似文献
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以Pro/Engineer和UGNX为代表的计算机辅助设计和辅助制造软件,在制造行业已经成为产品设计和产品制造工程师的重要工具。这些CAD/CAM软件都必须能够胜任曲面造型的功能,它是产品三维设计的必然前提,因此曲面造型成为计算机辅助几何设计和计算机图形学的一项研究重要内容,而计算几何正是对曲面造型进行研究的数学方法。通过对曲面造型和计算几何的相关概念的介绍,详细阐述了基于计算几何方法建立曲面参数曲线的各种数学建模过程。这些数学建模方法能为各种CAD/CAM系统实现曲面功能提供理论指导。 相似文献
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大型相控阵雷达装备的研发是一个复杂的系统工程,随着电子装备性能要求的日益增加以及更新换代的不断加快,传统的研发模式已经无法满足市场需求,需结合先进的设计方法和信息化技术进行数字化研发模式变革。文中结合雷达电子装备的研制特点,研究了基于模型的企业(Model-based Enterprise, MBE)、基于模型的系统工程(Model-based System Engineering, MBSE)的数字化样机协同研发、产品数字化维护与健康管理、智能车间等关键技术,并基于工业 4.0 的体系框架提出了产品研发创新和产品生产技术优化两个维度的应用设想,对复杂电子装备的智能化和定制化研发具有重要参考意义。 相似文献
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并行工程是一种系统化的工作模式,与现代计算机技术的有机结合是并行工程理论与应用的发展趋势,它强调产品全生命周期各个相关阶段的集成开发与优化.论述了并行工程及其关键技术、实施方法等,介绍了并行工程技术在机床制造业中的应用. 相似文献
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利用工程分析软件模拟的结果数据与可视化开发包AVS/Express,结合数据手套和位置跟踪器在AVS平台上实现了工程分析数据的交互式可视化。将工程分析数据和真实感模型结合起来,且利用虚拟现实技术提供给用户交互式的可视化环境。交互式可视化能够准确直观地展示工程结构的应力和应变分布情况,为产品结构优化设计提供依据,并且可以实现交互式操作,使可视化具有"沉浸感",从而大大提高工程设计的质量,提供了一种新的工程分析数据可视化实现模式。 相似文献