Journal of Korean Society of Industrial and Systems Engineering (산업경영시스템학회지)

Society of Korea Industrial and System Engineering (한국산업경영시스템학회)
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Determination of the Pallet Quantity Using Simulation in the FMS for Aircraft Parts

시뮬레이션 기법을 이용한 항공기 부품 가공 유연생산시스템의 팔레트 수량 결정

  • Kim, Deok Hyun (Department of Industrial and Systems Engineering, Gyeongsang National University/Korea Aerospace Industry) ;
  • Lee, In Su (Korea Aerospace Industry) ;
  • Cha, Chun Nam (Department of Industrial and Systems Engineering/Engineering Research Institute, Gyeongsang National University)
  • 김덕현 (경상대학교 대학원 산업시스템공학과/한국항공우주산업) ;
  • 이인수 (한국항공우주산업) ;
  • 차춘남 (경상대학교 산업시스템공학부/공학연구원)
  • Received : 2018.07.10
  • Accepted : 2018.11.22
  • Published : 2018.12.31
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Abstract

This study deals with the case study on the pallet quantity determination problem for the flexible manufacturing system producing 32 different types of aircraft wing ribs which are major structures of an aircraft wings. A Korean company has constructed the WFMS (wing rib flexible manufacturing system) that is composed of several automated equipments such as the 5-axis machining centers, the RGV (rail guided vehicles)s, the AS/RS (automated storage and retrieval system), the loading/unloading stations, and so on. Pallets play a critical role in the WFMS to maintain high system utilization and continuous work flow between 5-axis machining machines and automated material handling devices. The discrete event simulation method is used to evaluate the performance of the WFMS under various pallet mix alternatives for wing rib manufacturing processes. Four performance measures including system utilization, throughput, lead-time and work in process inventory level are investigated to determine the best pallet mix alternative. The best pallet mix identified by the simulation study is adopted in setting up and operating a real Korean aircraft parts manufacturing shop. By comparing the real WFMS's performances with those of the simulation study, we discussed the cause of performance difference observed and the necessity of developing the CPS (cyber physical system).

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References

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