Journal of Software:2000.11(12):1685-1691

(大连理工大学 机械工程系,辽宁,大连,116024;中国科学院 现代制造CAD/CAM技术开放实验室,辽宁 沈阳,110015)
A Nesting Method Based on Master Drawings and Their Similarity Retrieval
MA Jian,TENG Hong-fei,LIU De-quan
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Received:May 24, 1999    Revised:September 30, 1999
> 中文摘要: 为解决不规则图形排样问题,讨论了基于实例(样图)的推理方法在零件排样问题中的应用,给出了基于样图的排样系统结构.此方法的一个关键问题是在已知待排的零件组和板料的前提下,如何从样图库中检索出相应样图的图形匹配方法.为此提出了基于图形(组)简化骨架的模式编码的串间Findler距离的图形(组)之间相似性检索算法,并给出了算例验证.
中文关键词: 排样  样图  基于实例  图形匹配  Findler距离
Abstract:The nesting problem of irregular shapes has not been solved completely so far. This paper introduces case (master drawing) based reasoning method for solving nesting problem and presents the structure frame of nesting system based on the master drawings. The key aspect of this method is shape matching, which can be described as when the spare groups and board are provided, how to retrieve corresponding master drawing from drawing database. A similarity retrieval algorithm for master drawings is proposed in this paper based on the Findler distance between pattern strings of the shapes' simplified skeletons. A numerical example shows the method is effective.
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基金项目:国家自然科学基金资助项目(69573004;69974002;60073036);国家863航天领域高技术资助项目(863-205-8-3子课题) 国家自然科学基金资助项目(69573004;69974002;60073036);国家863航天领域高技术资助项目(863-205-8-3子课题)
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MA Jian,TENG Hong-fei,LIU De-quan.A Nesting Method Based on Master Drawings and Their Similarity Retrieval.Journal of Software,2000,11(12):1685-1691