한국기계가공학회지 (Journal of the Korean Society of Manufacturing Process Engineers)

  • 제16권3호
  • /
  • Pages.1-8
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  • 2017
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  • 1598-6721(pISSN)
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  • 2288-0771(eISSN)
한국기계가공학회 (The Korean Society of Manufacturing Process Engineers)
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FDM 3D 프린팅의 경로생성을 위한 옵?루프의 꼬임제거 알고리즘

An Algorithm for the Removing of Offset Loop Twists during the Tool Path Generation of FDM 3D Printer

  • Olioul, Islam Md. (Department of Mechanical and Automotive Engineering, Andong National UNIV.) ;
  • Kim, Ho-Chan (Department of Mechanical and Automotive Engineering, Andong National UNIV.)
  • 투고 : 2017.03.15
  • 심사 : 2017.04.05
  • 발행 : 2017.06.30
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초록

Tool path generation is a part of process planning in 3D printing. This is done before actual printing by a computer rather than an AM machine. The mesh geometry of the 3D model is sliced layer-by-layer along the Z-axis and tool paths are generated from the sliced layers. Each 2-dimensional layer can have two types of printing paths: (i) shell and (ii) infill. Shell paths are made of offset loops. During shell generation, twists can be produced in offset loops which will cause twisted tool paths. As a twisted tool path cannot be printed, it is necessary to remove these twists during process planning. In this research, An algorithm is presented to remove twists from the offset loops. To do so the path segments are traversed to identify twisted points. Outer offset loops are represented in the counter-clockwise segment order and clockwise rotation for the inner offset loop to decide which twisted loop should be removed. After testing practical 3D models, the proposed algorithm is verified to use in tool path generation for 3D printing.

키워드

참고문헌

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