Cooperative Optimization of Reconfigurable Machine Tool Configurations and Production Process Plan  

作　　者：XIE Nan LI Aiping XUE Wei 

机构地区：[1]Sino-German College of Applied Science, Tongji University, Shanghai 201804, China [2]Institute of AdvancedManufacturing Technology, Tong/i University, Shanghai 201804, China [3]College of Mechanical & Electrical Engineering, Wenzhou University, Wenzhou 325000, China

出　　处：《Chinese Journal of Mechanical Engineering》2012年第5期982-989,共8页中国机械工程学报（英文版）

基　　金：supported by National Natural Science Foundation of China (Grant Nos. 51005169, 50875187, 50975209);Shanghai Municipal Natural Science Foundation of China (Grant No. 10ZR1432300);International Science & Technology Cooperation Program of China (Grant No. 2012DFG72210);Zhejiang Provincial Key International Science & Technology Cooperation Program of China (Grant No. 2011C14025)

摘　　要：The production process plan design and configurations of reconfigurable machine tool （RMT） interact with each other. Reasonable process plans with suitable configurations of RMT help to improve product quality and reduce production cost. Therefore, a cooperative strategy is needed to concurrently solve the above issue. In this paper, the cooperative optimization model for RMT configurations and production process plan is presented. Its objectives take into account both impacts of process and configuration. Moreover, a novel genetic algorithm is also developed to provide optimal or near-optimal solutions： firstly, its chromosome is redesigned which is composed of three parts, operations, process plan and configurations of RMTs, respectively; secondly, its new selection, crossover and mutation operators are also developed to deal with the process constraints from operation processes （OP） graph, otherwise these operators could generate illegal solutions violating the limits; eventually the optimal configurations for RMT under optimal process plan design can be obtained. At last, a manufacturing line case is applied which is composed of three RMTs. It is shown from the case that the optimal process plan and configurations of RMT are concurrently obtained, and the production cost decreases 6.28% and nonmonetary performance increases 22%. The proposed method can figure out both RMT configurations and production process, improve production capacity, functions and equipment utilization for RMT.The production process plan design and configurations of reconfigurable machine tool （RMT） interact with each other. Reasonable process plans with suitable configurations of RMT help to improve product quality and reduce production cost. Therefore, a cooperative strategy is needed to concurrently solve the above issue. In this paper, the cooperative optimization model for RMT configurations and production process plan is presented. Its objectives take into account both impacts of process and configuration. Moreover, a novel genetic algorithm is also developed to provide optimal or near-optimal solutions： firstly, its chromosome is redesigned which is composed of three parts, operations, process plan and configurations of RMTs, respectively; secondly, its new selection, crossover and mutation operators are also developed to deal with the process constraints from operation processes （OP） graph, otherwise these operators could generate illegal solutions violating the limits; eventually the optimal configurations for RMT under optimal process plan design can be obtained. At last, a manufacturing line case is applied which is composed of three RMTs. It is shown from the case that the optimal process plan and configurations of RMT are concurrently obtained, and the production cost decreases 6.28% and nonmonetary performance increases 22%. The proposed method can figure out both RMT configurations and production process, improve production capacity, functions and equipment utilization for RMT.

关 键 词：reconfigurable manufacturing system reconfigurable machine tool CONFIGURATION process plan cooperative optimization model 

分 类 号：TG502[金属学及工艺—金属切削加工及机床] TG502.1