可装配特征的结构化描述与匹配推理研究  

Research on Structural Description and Matching Reasoning of Assemblable Features

作　　者：徐凯[1] 阴艳超[1] 廖伟智 柳翠寅[3] Xu Kai;Yin Yanchao;Liao Weizhi;Liu Cuiyin(Faculty of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming 650500,China;School of Mechanical and Electrical Engineering,University of Electronic Science and Technology,Chengdu 610054,China;Yunnan Province Key Laboratory of Computer Technology Applications,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]昆明理工大学机电工程学院,昆明650500 [2]电子科技大学机械与电气工程学院,成都610054 [3]昆明理工大学云南省计算机技术重点实验室,昆明650500

出　　处：《机械科学与技术》2019年第12期1885-1893,共9页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家重点研发计划项目(2017YFB1400301)资助

摘　　要：针对复杂产品装配设计过程中零部件间匹配关系描述不清晰,装配设计过程中零件配对精度不高等问题,提出了可装配特征的结构化描述与匹配推理研究方法。在分析影响零件获取、匹配、调整以及装配的工艺关联、匹配型面特征,以及装配设计意图的基础上,给出了包括工程语义、装配约束、装配端口、装配空间关系的装配关键结的定义和结构化描述。基于装配关键结的复杂产品零部件进行了可装配性分析,确定了装配关键结中各因素权重,并通过模糊理想解法完成了对复杂零部件装配属性邻接图的求解,最终通过复杂产品装配从定性输入到定量求解,再到定性输出的映射变换实现了零部件间的精准匹配,给出了推理匹配过程。最后,通过应用算例验证了方法的有效性。Aiming at the problems including unclear description of the matching relationship between parts and the low accuracy of parts matching in assembly design, a method of structured description and matching reasoning for assemblable features is proposed. Firstly, the definition and structural description of assembly key knots including engineering semantics, assembly constraints, assembly ports and assembly space relations were given, which based on the analysis of the process correlation, matching surface characteristics and assembly design intention that affect parts acquisition, matching, adjustment and assembly. Then, the DFA(design for assembly) of complex product parts based on assembly key knots was analyzed, and the weight of each factor in assembly key knot was determined. In addition, the solution of assembly attribute adjacent graph of complex parts was completed by FTOPSIS(fuzzy technique for order preference by similarity to an ideal solution) in fuzzy set theory, and thus the precise matching between components could be realized from qualitative input to quantitative solution and then to qualitative output. Finally, the validity of the method was verified, and the research result provided a novel approach for efficient and accurate assembly of complex product parts.

关 键 词：可装配性 装配关键结 匹配推理 属性邻接图 精准匹配 

分 类 号：TG391[金属学及工艺—金属压力加工]