A Study on Error Verification of STL format for Rapid Prototyping System

급속조형시스템을 위한 STL 포멧의 오류 검증에 관한 연구

  • 최홍태 (부산대 생산기계공학과 대학원) ;
  • 이석희 (부산대 생산기계공학과 기계기술연구소)
  • Published : 1996.04.01


Nowadays, the STL format, industrial standard data, which approximates three dimensional CAD model to triangular facets, is used for RP(Rapid Prototyping) system. Because most RP machine is accpted to only two dimensional line segments, but some STL translators are sometimes poorly implemented. The error verifying process is as follows. 1) Remove facets with two or more vertices equal to each other. 2) Fix overlapping error such as more than three facets adjacent to an edge. 3) Fill holes in the mesh by using Delaunay triangulation method. 4) Repair wrong direction and value of normal vectors. This paper is concerned with searching the mentioned errors in advance and modifying them.