Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Hybrid 3D Printing and Casting Manufacturing Process for Fabrication of Smart Soft Composite Actuators

지능형 연성 복합재 구동기 제작을 위한 3D 프린팅-캐스팅 복합 공정

  • Kim, Min-Soo (Department of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Song, Sung-Hyuk (Department of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Kim, Hyung-Il (Department of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Ahn, Sung-Hoon (Department of Mechanical and Aerospace Engineering, Seoul National University)
  • 김민수 (서울대학교 기계항공공학부) ;
  • 송성혁 (서울대학교 기계항공공학부) ;
  • 김형일 (서울대학교 기계항공공학부) ;
  • 안성훈 (서울대학교 기계항공공학부)
  • Received : 2015.10.08
  • Accepted : 2015.11.06
  • Published : 2016.01.01
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Abstract

Intricate deflection requires many conventional actuators (motors, pistons etc.), which can be financially and spatially wasteful. Novel smart soft composite (SSC) actuators have been suggested, but fabrication complexity restricts their widespread use as general-purpose actuators. In this study, a hybrid manufacturing process comprising 3-D printing and casting was developed for automated fabrication of SSC actuators with $200{\mu}m$ precision, using a 3-D printer (3DISON, ROKIT), a simple polymer mixer, and a compressor controller. A method to improve precision is suggested, and the design compensates for deposition and backlash errors (maximum, $170{\mu}m$). A suitable flow rate and tool path are suggested for the polymer casting process. The equipment and process costs proposed here are lower than those of existing 3D printers for a multi-material deposition system and the technique has $200{\mu}m$ precision, which is suitable for fabrication of SSC actuators.

Keywords

References

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