基于图匹配的注塑模具加工特征识别  

Machining feature recognition of injection mold based on graph matching

作　　者：罗云中 盛步云[1] 陈贻堃 Luo Yunzhong;Sheng Buyun;Chen Yikun(School of Mechanical and Electronic Engineering,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]武汉理工大学机电工程学院,武汉430070

出　　处：《现代制造工程》2020年第11期61-67,共7页Modern Manufacturing Engineering

基　　金：国家重点研发计划项目(2016YFB1101700)。

摘　　要：针对注塑模具加工特征的识别问题,提出了一种基于图匹配与规则推理的混合式加工特征识别方法。通过构建注塑模具零件模型的属性邻接图,并对属性邻接图进行分解,获取多个子图,与预定义的加工特征库中的加工特征进行图同构判断,完成加工特征的识别;为满足加工过程中的工艺性需求,对满足组合条件的加工特征进行组合,构造组合特征;最后通过规则推理完成加工特征的精确识别。通过具体实例验证表明,该方法能够有效识别注塑模具的加工特征,满足预期要求。Aiming at the machining feature recognition problem of injection mold,a hybrid machining feature recognition method based on graph matching and rule reasoning was proposed.The method built the attributed adjacency graph of injection mold part,the attributed adjacency graph was decomposed into sub-graphs which could be used to make graph isomorphism judgment with machining features in the predefined feature library to complete the identification of machining features.To meet the machining requirements in the machining process,combined machining features that meet the combination conditions to construct combined features.Finally,the precise recognition of machining features was completed through rule reasoning.The experimental results showed that the method can effectively identify the machining features of injection mold.

关 键 词：注塑模具 加工特征识别 规则推理 属性邻接图 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]