Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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3D Cutting Machine of EPS Foam for Manufacturing Free-Formed Concrete Mold

비정형 콘크리트 거푸집 제작을 위한 EPS Foam의 3D 가공기계

  • Seo, Junghwan (Department of Mechanical Engineering, Graduate School, Korea University) ;
  • Hong, Daehie (Department of Mechanical Engineering, Korea University)
  • 서정환 (고려대학교 대학원 기계공학과) ;
  • 홍대희 (고려대학교 기계공학과)
  • Received : 2016.03.04
  • Accepted : 2016.08.28
  • Published : 2017.01.01
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Abstract

We used a construction method using a CNC milling machine, where free-formed molds were made by cutting EPS (Expanded PolyStyrene) foam with the CNC machine, to build free-formed buildings. CNC milling is off-the-shelf technology that can easily cut EPS foam; however its production cost is too high and the time to manufacture an EPS mold is too long. This paper proposes a novel cutting machine with a fast and cost effective mechanism to manufacture EPS concrete molds. Our machine comprises a cutter and Cartesian coordinate type moving mechanism, where the cutter cuts EPS foam using a hotwire in the shape of '$\sqcap$' and is capable of adjusting its cutting angle in real-time while keeping its cutting width. We proved through cutting experiments on the CNC machine that cutting time was greatly shortened compared to the conventional method and that the resulting concrete mold satisfied manufacturing precision.

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References

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