Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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Development of Edge Milling Automation System for PSPC Application

PSPC 적용을 위한 모서리 밀링 자동화 시스템 개발

  • Ryu, Hyun-Su (Dept. School of Industrial Engineering and Naval Architecture, Changwon University) ;
  • Park, Il-Hwan (Dept. of Mechanical Engineering, Changwon University) ;
  • Ko, Dae-Eun (Dept. of Naval Architecture and Ocean Engineering, Dong-Eui University) ;
  • Kim, Ho-Kyeong (Dept. of Naval Architecture and Ocean Engineering, Mokpo National University)
  • 유현수 (창원대학교 산업조선해양공학부) ;
  • 박일환 (창원대학교 기계공학부) ;
  • 고대은 (동의대학교 조선해양공학과) ;
  • 김호경 (목포대학교 조선해양공학과)
  • Received : 2018.02.21
  • Accepted : 2018.05.04
  • Published : 2018.05.31
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Abstract

The International Maritime Organization has enacted mandatory performance standards for protective coatings (PSPC), and as a result, shipyards must perform 2R or 3-pass milling on the edges of color plates. However, manual milling could result in many problems in terms of work environment and productivity. Therefore, it is necessary to develop an edge milling automation system that can satisfy the regulations. In this study, a basic design for an edge milling automation system was developed for standard color plates, and the machining process was established by applying shape recognition and a machining path generation algorithm. In addition, operating software was developed, and suitable milling conditions were derived based on the results of a milling test. The results could be used to build an automation system that meets the PSPC requirements and improve productivity.

국제 해사 기구의 선체 보호 도장 기준이 의무화됨에 따라 조선소에서는 칼라 플레이트의 모서리 부분에 대해 2R 또는 3-pass 밀링 가공을 수행해야 한다. 그러나 기존 수작업 방식에 의존하고 있는 상황에서 2R 또는 3-pass 밀링 가공을 수행한다면 작업 환경 및 생산성 측면에서 많은 문제점이 발생할 것으로 예상된다. 따라서 규정을 만족할 수 있는 모서리 밀링 자동화 시스템을 개발하여 이러한 문제점을 해결할 필요가 있다. 본 연구에서는 표준 칼라 플레이트를 대상으로 모서리 밀링 자동화 시스템 기본 설계를 수행하였고, 형상 인식 및 가공 경로 생성 알고리즘을 적용하여 가공 프로세스를 정립하였다. 또한, 운영 소프트웨어를 구축하고, 전용 가공 툴을 제작하여 밀링 테스트를 수행한 결과를 토대로 적합한 밀링 가공조건을 도출하였다. 향후, 본 연구를 통해 개발된 모서리 밀링 자동화 시스템을 조선소에 도입하여 현장 테스트를 수행하고, 그 결과를 토대로 상용화 연구를 진행한다면 선체 보호 도장 기준을 충족할 수 있는 자동화 시스템을 구축함과 동시에 생산성 향상을 기대할 수 있다.

Keywords

References

  1. Kwang-Ki Baek, "Prospect on IMO's Performance Standards for Protective Coatings (PSPC) Regulation for Ship's Water Ballast Tanks", Corrosion Science and Technology, vol. 7, no. 4, pp. 219-223, 2008.
  2. Naoki Osawa, Akira Furujo, Masayuki Nagahori, Toshitake Onishi, Hiroyuki Yajima, Takeshi Miyamoto, "Development of Edge-Preparing Plasma Arc Cutting (EPPAC) System", Proc. of NACE International Corrosion 2011, NCAE-11422, 2011.
  3. Jung-Hoon Joo, Kug-Weon Kim, "Modeling of the Specific Cutting Pressure to Predict the Cutting Force in Face Milling", Proc. of the Korea Academia- Industrial Cooperation Society, pp. 306-308, 2008.
  4. Yong-Sun Kim, Won-Tae Kwon, "Determination of Optimal Cutting Conditions in Milling Process using Multiple Design of Experiments Technique", Journal of the Korean Society of Manufacturing Technology Engineers, vol. 20, no. 3, pp. 232-238, 2011.
  5. Minghai Wang, Yue Sun, Guoqiang Sun, "Simulation and Experiment for Twisted Thin-Walled Part Milling Based on Machining Path", Journal of Nanjing University of Aeronautics & Astronautics, vol. 45, no. 3, pp. 373-379, 2013.
  6. R.D. Lorenz, P.B. Schmidt, "Synchronized Motion Control for Process Automation", Proc. of the 1989 IEEE Industry Applications Annual Meeting, pp. 1693-1698, 1989. DOI: https://doi.org/10.1109/IAS.1989.96869
  7. Yoram Koren, "Cross-coupled Biaxial Computer Control for Manufacturing Systems", Journal of Dynamic Systems, Measurement and Control, vol. 102, pp. 265-272, 1980. DOI: https://doi.org/10.1115/1.3149612
  8. I. Sobel, An Isotropic $3{\times}3$ Gradient Operator in Machine Vision for Three-Dimensional Scenes, pp. 376-379, Academic Press, 1990.
  9. Richard O. Duda and Peter E. Hart, "Use of the Hough Transformation to Detect Lines and Curves in Pictures", Graphics and Image Processing, vol. 15, no. 1, pp. 11-15, 1972. DOI: https://doi.org/10.1145/361237.361242