›› 2017, Vol. 23 ›› Issue (第8期): 1652-1661.DOI: 10.13196/j.cims.2017.08.006
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Supported by:
徐昌鸿,张树生+,黄波,李秀玲
基金资助:
Abstract: To realize the effective reuse of existing NC process,a NC process reuse oriented subpart retrieval approach of 3D CAD models was presented.The Medial Axis Transform (MAT) was introduced and adopted as the reference tool paths of a pocket,and the association between MAT and NC machining was elaborated.A rapid filtering method for accelerating subpart retrieval was presented to filter out infeasible subparts cases under the requirements of NC process reuse.A feature descriptor with multi-attributes fusion was extracted and the NC process reuse oriented subpart similarity assessment model was constructed.Experimental results showed that the approach could effectively support subpart retrieval for NC process reuse and satisfy the requirements of engineering application.
Key words: NC process reuse, subpart retrieval, medial axis transform, similarity, computer aided design
摘要: 为实现已有零件数控工艺的有效重用,提出一种面向数控工艺重用的三维CAD模型局部结构检索方法。引入中轴变换作为加工特征的参考刀具轨迹,探究了中轴变换与数控加工的关联关系;提出一种局部结构快速过滤方法,从而有效排除不符合数控工艺重用要求的局部结构实例;通过提取多属性融合的特征描述子,构建了面向数控工艺重用的局部结构相似性评价模型。实验结果表明,该方法能够有效支持面向数控工艺重用的局部结构检索,提高数控工艺设计效率,满足企业的实际工程需求。
关键词: 数控工艺重用, 局部结构检索, 中轴变换, 相似性, 计算机辅助设计
CLC Number:
TP391
徐昌鸿,张树生,黄波,李秀玲. 面向数控工艺重用的三维CAD模型局部结构检索[J]. 计算机集成制造系统, 2017, 23(第8期): 1652-1661.
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URL: http://www.cims-journal.cn/EN/10.13196/j.cims.2017.08.006
http://www.cims-journal.cn/EN/Y2017/V23/I第8期/1652