Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
권호 표지

Offset of STL Model Generated from Multiple Surfaces

열린 STL 모델의 옵셋 방법

  • 김수진 (경상대학교 기계항공공학부) ;
  • 양민양 (한국과학기술원 기계공학과)
  • Published : 2006.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper introduces and illustrates the results of a new method for offsetting the triangular mesh generated from multiple surfaces. The meshes generated from each surface are separated each other and normal directions are different. The face normal vectors are flipped to upward and the lower faces covered by upper faces are deleted. The virtual normal vectors are introduced and used to of feet boundary. It was shown that new method is better than previous methods in offsetting the triangular meshes generated from multiple surfaces. The introduced offset method was applied for 3-axis tool path generation system and tested by NC machining.

Keywords

References

  1. Choi, B. K., Kim, D. H. and Jerad, R. B., 'C-Space approach to tool path generation for die and mold machining,' Computer-Aided Design, Vol. 29, No. 3, pp. 657-669, 1997 https://doi.org/10.1016/S0010-4485(97)00012-2
  2. Cho, S. H., Cho, M. W. and Kim, J. D., 'Reverse Engineering of 3D Compound Shapes using Delaunay Triangulation,' Journal of the Korean Society of Precision Engineering, Vol. 17, No.7, pp. 181-188, 2000
  3. Lee, S. H., Ahn, D. G. and Yang, D. Y., 'Surface Recosntruction for Cutting Path Generation on VLM-Slicer,' Journal of the Korean Society of Precision Engineering, Vol. 19, No. 7, pp. 71-79, 2002
  4. Jun, C. S., Kim, D. S. and Park, S. H., 'A new curve-based approach to triangle machining,' Computer-Aided Design, Vol. 34, No. 5, pp. 379-389, 2002 https://doi.org/10.1016/S0010-4485(01)00110-5
  5. Koc, B. and Lee, Y. S., 'Non-uniform offsetting and hollowing objects by using biarcs fitting for rapid prototyping process,' Computers in Industry, Vol. 47, pp. 1-23, 2002 https://doi.org/10.1016/S0166-3615(01)00141-5
  6. Qu, X. and Stucker, B., 'A 3D surface offset method for STL-format models,' Rapid prototyping journal, Vol. 9, No. 3, pp. 133-141, 2003 https://doi.org/10.1108/13552540310477436
  7. Kim, S. J., Lee, D. Y. and Yang, M. Y., 'Offset triangular mesh using the multiple normal vectors of a vertex,' Computer-Aided Design and Applications, Vol. 1, No. 1-4, pp. 285-292, 2004
  8. Kim, S. J. and Yang, M. Y., 'Offset of STL Model Generated from Solid Model,' Journal of Korea Society of Precision Engineering, Vol. 22, No. 9, pp. 202-211, 2005
  9. Lee, D. Y., Kim, S. J., Lee, S. G. and Yang, M. Y., 'Incomplete 2-manifold mesh based tool path generation,' The International Journal of Advanced Manufacturing Technology, Vol. 27, pp. 797-803, 2006 https://doi.org/10.1007/s00170-004-2239-8
  10. Park, S. C; 'Sculptured surface machining using triangular mesh slicing,' Computer-Aided Design, Vol. 36, No. 3, pp. 279-288, 2004 https://doi.org/10.1016/S0010-4485(03)00114-3
  11. Kim, S. J. and Yang, M. Y., 'Uniform Scallop Height Tool Path Generation Using CL Surface Deformation,' Transactions of the KSME A, Vol. 29, No. 6, pp. 895-903, 2005 https://doi.org/10.3795/KSME-A.2005.29.6.895
  12. Piegl, L. A. and Riechard, A. M., 'Tessellating trimmed NURBS surfaces,' Computer-Aided Design, Vol. 27, No. 1, pp. 16-26, 1995 https://doi.org/10.1016/0010-4485(95)90749-6
  13. Park, J. W., Chung, Y. C. and Choi, B. K., 'Precision shape modeling by z-map model,' International Journal of Precision Engineering and Manufacturing, Vol. 3, No.1, pp. 49-56, 2002