International Journal of CAD/CAM

Society for Computational Design and Engineering (한국CDE학회)
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An Algorithm for Splitting a Box by a Loop and Its Applications in Manufacturing

  • Kheerwal, Anoop (Computer Graphics Laboratory, Department of Mechanical Engineering, Indian Institute of Technology) ;
  • Shanmuganathan, Vivekananda (Computer Graphics Laboratory, Department of Mechanical Engineering, Indian Institute of Technology) ;
  • Shringi, Rohitashwa (Computer Graphics Laboratory, Department of Mechanical Engineering, Indian Institute of Technology) ;
  • Karunakaran, Karuna P. (Computer Graphics Laboratory, Department of Mechanical Engineering, Indian Institute of Technology)
  • Published : 2003.12.31
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Abstract

During the design of dies and molds, the cavity of the object is obtained by subtracting it from a surrounding rectangular block. This box is subsequently split into two halves by the parting surface. Similar problems also occur in some RP processes such as LOM, SGC, SLS and 3DP where the machine produces a block inside which the prototype is buried. Determining the orientation of the object inside the box and the corresponding parting surface taking appropriate constraints into account have been addressed by several researchers. However, given the parting surface, the problem of splitting the box development of a software package called OptiLOM (now a module of an RP software Magics 8.0), the authors realized non-triviality of this problem since the loop can spread over as many as 5 faces of the box. In this paper, the authors have tried to bring out the importance of this problem and have presented their algorithm to solve it.

Keywords

References

  1. Chen, L. L., Chou, S. Y. and Woo, T. C. (1993), 'Parting directions for mould and die design', Computer-Aided Des., 25(12), 762-768
  2. Chen, L. L., Chou, S. Y. and Woo, T. C. (1995), 'Partial visibility for selecting a parting direction in mold and die design', Journal of Manufacturing Systems, 14(5), 319-320
  3. Alexander. P., Seth. A. and Dutta, D. (1998). 'Part orientation and build cost determination in layered manufacturing', Computer-Aided Design, 30(5), 343-356
  4. Rattanawong, W, Masood, S. H. and lovenitti, P. (2001), 'A volumetric approach to part-build orientations in rapid prototyping,' Journal of Materials Processing Technology, 119(1-3). 348-353
  5. Majni. J., Gupta, P. and Janardan. R. (1996). 'Computing a flattest undercut-free parting line for a convex polyhedron with application to mold design', FCRC 96 Workshop Springer-Verlag, 121-132
  6. Hui, K. C. (1997). 'Geometric aspects of the mouldability of pans', Computer-Aided Design, 29(3), 197-208
  7. Fu, M. W, Nee, A. Y. C. and Fuh, J. Y. H. (2002), 'The application of surface visibility and moldability to parting line generation', Computer-Aided Design. 34(6). 469-480
  8. Hilton, P. D. and Jacobs. P. F. (Ed.). (2000). Rapid Tooling: 'Technologies and Industrial Applications', Marcel Dekker, 51-94
  9. Karunakaran, K. P. Shivmurthy Dibbi. P. Vivekananda Shanmuganathan, D. Satyanarayana Raju and Srinivasarao Kakaraparti (2000). 'Optimal Stock Removal in LOMRP', I MECH E Journal of Engineering Manufacture. 214(Part B), 947-951
  10. Karunakaran, K. P., Shivmurthy Dibbi. P. Vivekananda Shanmuganathan, Srinivasarao Kakaraparti and D. Sathyanarnyana Raju (April 2002), 'Efficient Stock Cutting in Laminated Manufacturing' , Computer-Aided Design, 34(4), 281-298
  11. Materialise, N. V.. Leuven (Belgium). www.materialise.be