共查询到19条相似文献,搜索用时 140 毫秒
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基于知识的CAPP中工艺知识管理与应用策略研究 总被引:2,自引:0,他引:2
通过对制造业工艺工作领域的调研,对制造企业在工艺设计过程中对CAPP系统的功能需求进行分析,总结制造企业工艺设计的共同特点,并以此为依据开发了基于知识的CAPP系统。本文对系统中的工艺知识在工艺方案设计和零部件工艺设计中的应用作了系统的研究,提出了一系列的实现办法。阐述了系统中知识管理的方法。分析了基于知识的CAPP系统的主要特点。 相似文献
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基于产品工艺设计过程管理构架的CAPP系统 总被引:3,自引:1,他引:2
先进制造技术的发展对CAPP系统的柔性提出了更高的要求。本文结合作者在CAPP中的研究与实践,把构架设计思想应用于CAPP系统,提出了CAPP领域分析模型和产品工艺设计过程管理构架。在此基础上,以作者参与开发的上海飞机制造厂CAPP系统为实例,参照产品工艺设计过程管理构架,详细论述了该系统的五大功能,由此为CAPP的研究提供了一种新的可行的方法。 相似文献
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吴永祥 《中国制造业信息化》2003,32(12):100-101,116
针对数控技术在制造自动化系统(MAS)中起着越来越显著的作用,提出了数控加工CAPP系统的信息流程着重阐述了面向数控加工CAPP系统的工艺资源库和工艺文件的设计内容、设计方法,为实现CAD/CAPP/CAM系统集成奠定了基础。 相似文献
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桥式起重机主梁焊接CAPP系统的开发 总被引:1,自引:0,他引:1
简要分析了箱型桥式起重机主梁制造工艺设计现状,讨论了工艺设计内容、要求和流程, 以及主梁焊接CAPP系统的基本要求,提出了一种基于数据库的主梁焊接CAPP系统结构.采用Delphi编程,开发了基于开放式数据库的桥式起重机主梁焊接CAPP系统,可以完成主梁制造工艺设计.该CAPP系统可以加快工艺设计的速度和效率,提高设计质量和继承性,为工艺设计标准化和最优化创造了条件. 相似文献
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工艺设计作为产品设计与制造的中间环节,在企业生产制造过程中起着极其重要的作用。最开始人们对CAPP的研究侧重于工艺设计的自动化,后来又侧重于计算机对工艺设计的辅助作用,现在人们越来越认识到工艺知识在工艺设计中的重要性。 相似文献
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Hsin-Chuan Chen Hong-Tzong Yau Chien-Chung Lin 《The International Journal of Advanced Manufacturing Technology》2012,58(5-8):607-619
This paper presents a computer aided process planning (CAPP) system for numerical control tool path generation of complex shoe molds. This CAPP system includes both the automation of auxiliary boundary curve generation and machining strategies. The automation of auxiliary boundary curve generation and machining strategies make tool path generation more accurately and efficiently. Traditional shoe mold making is a very tedious process. Even with the utilization of computer-aided design and computer-aided manufacturing (CAD/CAM), the CAM process requires long hours of tool path programming and debugging. It would also take a long time to calculate (sometimes several hours) the tool path for complex athletic footwear. In order to reduce the tool path editing and programming time, this paper proposes the use of CAPP to reduce processing time and increase efficiency. It is difficult, if not impossible, to develop a generic CAPP system that can generate a process plan to solve general production problems. However, it is quite possible to capture the domain knowledge of a certain production process and embed that knowledge into a CAPP system. We prove, by using such a system, that a very complicated process planning problem can be overcome by a knowledge-based CAPP approach. With such an approach, the traditional manufacturing process of shoe molds can be converted to an automatic manufacturing process with the CAPP system. In fact, shoe molds for real production have been created using the developed CAPP system, demonstrating the effectiveness of this approach. In this paper, we show that several complex and different shoe molds and their machining strategies were automatically planned by the proposed CAPP system. The result of a comparison between the CAPP system with the traditional approach is presented and discussed. 相似文献
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现代CAPP技术及其发展研究 总被引:12,自引:0,他引:12
企业信息化工程推动了CAPP技术的发展和应用,本文通过CAPP的发展过程、信息技术的发展以及企业信息化工程对CAPP的需求等进行深入分析,从体系结构、系统功能、信息组织、工艺设计模式、系统性能等方面分析了现代CAPP技术的发展趋势。(1)CAPP系统的体系结构由单机模式、C/S模式向C/S模式与基于Web技术的B/S模式相结合、组件化、层次结构化方向发展;(2)CAPP系统的功能覆盖企业整个工艺领域,向集成化制造数据管理方向发展;(3)工艺设计模式向基于知识的分布协同决策的综合智能化设计技术发展;(4)CAPP的应用更加强调系统的集成性和开放性等。文中还简要介绍了相关关键技术。 相似文献
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《Computer Integrated Manufacturing Systems》1995,8(3):173-184
Process planning establishes the methods and means of converting the raw material into a finished part. The planning function interacts with the manufacturing system through (a) the design specification, (b) manufacturing resources, and (c) the process plan. Similarly, computer aided process planning (CAPP) establishes the links with its application environment through the analogous models. Though much attention is paid to the modelling of the part and manufacturing resources, modelling of the process plan has been an ignored topic to-date. The present paper discusses the need for modelling the process plan, and proposes a framework for process plan internal representation (PPIR) for the effective integration of CAPP and CAM functions. The implementation of the proposed framework in GIFTS — a CAPP system for rotational parts — is also discussed. 相似文献
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H.C.W. Lau C.K.M. Lee B. Jiang I.K. Hui K.F. Pun 《The International Journal of Advanced Manufacturing Technology》2005,26(9-10):1032-1042
During the 1990s, Computer-Aided Design (CAD) and Computer-Aided Process Planning (CAPP) have emerged as effective means of improving productivity and efficiency, resulting in widespread research work related to CAD and CAPP integration in the hope of achieving seamless data flow among the relevant computer systems. Unfortunately, the efficiency of process planning systems still needs significant improvement due to the problems of design data loss or design data mis-interpretation. This paper attempts to introduce an intelligent computer-integrated system for reliable design feature recognition in order to achieve automatic process planning. Moreover, it describes a rule-based computer-integrated system for recognizing features of components stored as STEP format, analyzing the design files and designing manufacturing processes. In this approach, the STEP design file is used as the information source for generating detailed manufacturing process. The significance of this research is that the product designs with dissimilar formats from various CAD systems can now be interconnected and automatically coded for multiple manufacturing purposes. It presents an effective method that rule-based reasoning is used to create optimal process plans for metal cutting. 相似文献
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多转子系统弯、扭耦合作用时临界转速的研究 总被引:3,自引:2,他引:3
导出了轴的弯、扭耦合传递矩阵和轴间的弯、扭耦合矩阵。在文[1]的基础上编制了多转子弯、扭耦合临界转速的通用程序。采用等效刚度、等效阻尼方法编制了多转子弯、扭耦合稳态不平衡响应的通用程序;研究了扭振、畸形结构、油膜刚度、油膜阻尼等因素对临界转速的影响;并对某型发动机转子进行了计算和分析 相似文献
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全球制造策略要求工艺文件能用多种语言来表示以便于交流 ,而目前的 CAPP只能生成单一语言表示的工艺文件 ,因此 ,中英文工艺设计与翻译系统的开发是非常必要的。本文分析了 CAPP系统、机器翻译的研究应用现状和对工艺设计与中英文翻译系统需求 ,研究了工艺设计与中英文翻译系统的功能、总体结构与关键技术的实现方法 ,提出了用带有形式变量的工艺语句模板来实现工艺语句的规范化 ,以基于工艺语句模板的直译式翻译法为主、以基于语法规则的翻译法为辅的方法来实现的工艺文件翻译。在此基础上 ,结合航空制造业对外合作研制的需要 ,开发了一个航空工艺文件编制与中英文机器翻译系统 ,该系统己投入了实际应用 相似文献