International Journal of Precision Engineering and Manufacturing

Korean Society for Precision Engineering (한국정밀공학회)
권호 표지

Geometrical Compensation of Injection-Molded Thin-Walled Parts in Reverse Engineering

  • Kim Yeun Sul (Dept. of mechanical engineering, Graduate school, Chonbuk National University) ;
  • Lee Hi Koan (Automobile-parts & Mold Technology Innovation Center, Chonbuk National University) ;
  • Huang Jing Chung (Dept. of mechanical engineering, Graduate school, Chonbuk National University) ;
  • Kong Young Sik (Regional Office of Jeonbuk Smal & Medium Business Administration) ;
  • Yang Gyun Eui (Dept. of mechanical engineering, Chonbuk National University)
  • Published : 2005.04.01
Download PDF
⟨ Previous Next ⟩

Abstract

A geometric compensation of thin-walled molded parts in reverse engineering is presented. Researches in reverse engineering have focused on the fitting of points to curves and surfaces. However, the reconstructed model is not the geometric model because the molded parts have some dimensional errors in measurements and deformation during molding. Geometric information can give an improved accuracy in reverse engineering. Thus, measurement data must be compensated with geometric information to reconstruct the mathematical model. The functional and geometric concepts of the part can be derived from geometric information. LSM (Least square method) is adopted to determine the geometric information. Also, an example of geometric compensation is given to improve the accuracy of geometric model and to inspect the reconstructed model.

Keywords

References

  1. Tamas, V., Ralph, R. M. and Jordan, C., 'Reverse engineering of geometric models - an introduction,' Computer-Aided Design, Vol. 29, No. 4, pp. 255-268, 1997 https://doi.org/10.1016/S0010-4485(96)00054-1
  2. Lee, H. K., Kim, H. C. and Yang, G. E., 'A Study on Digital Process of Injection Mold in Reverse Engineering,' Journal of the Korean Society of Precision Engineering, Vol. 19, No. 6, pp. 160-165, 2002
  3. Bidanda, B. and Hosni, Y. A., 'Reverse engineering and its relevance to industrial engineering: a critical review,' Computers Ind Engng, Vol. 26, No. 2, pp. 343-348, 1994 https://doi.org/10.1016/0360-8352(94)90067-1
  4. Yang, A. T. and Roth, B., 'Higher-Order Path Curvature in Spherical Kinematics,' ASME Journal of Engineering for Industry, May, Series B, Vol. 95, No. 2, pp. 612-616, 1973
  5. Chen, L. C. and Lin, G. C. I., 'An integrated reverse engineering approach to reconstructing free-form surfaces,' Computer Integrated Manufacturing Systems, Vol. 10, No. 1, pp. 49-60, 1997 https://doi.org/10.1016/S0951-5240(96)00019-5
  6. MENQ, C. and CHEN, F. L. 'Curve and Surface Approximation from CMM Measurement Data,' Computer ind. Engng, Vol. 30, No. 2, pp. 211-225, 1996 https://doi.org/10.1016/0360-8352(95)00165-4
  7. Cho, M. W., Seo, T. I., Kim, J. D. and Kwon, O. Y., 'Reverse Engineering of Compound Surfaces Using Boundary Detection Method,' KSME International Journal, Vol. 14, No. 10, pp. 1104-1113, 2000
  8. Lee, S. C., 'Plastic Injection Molding Conditions,'KiJeon Press, Korea, 2001
  9. Hong, M. W., 'Injection Molding Technology I, II,' KiJeon Press, Korea, 1999
  10. Choi, B. K., Bae, S. H., Yoo, S. K. and Jung, W. H., 'Shape Reverse Engineering for Rapid Product Development,' Journal of the Korean Society of Precision Engineering, Vol. 17, No. 10, pp. 17-25, 2000
  11. Choi, B. K. and Jerad, R. B., 'Sculptured Surface Machining,' Kluwer academic publishers, pp. 215, 1997
  12. Ueng, W. D., Lai, J. Y. and Doong, J. L., 'Sweep-surface reconstruction from three-dimensional measured data,' Computer-Aided Design, Vol. 30, No. 10, pp. 971-805, 1998