Advertisement

Automatic recognition of intersecting features for side core design in two-piece permanent molds

  • Rajnish Bassi
  • N. Venkata Reddy
  • Sanjeev Bedi
ORIGINAL ARTICLE

Abstract

The automatic recognition of molding features (protrusions, depressions, and their intersections), core, and cavity surfaces plays an important role in shortening the lead time in mold design and manufacturing as well as aiding the side core design. Consequently, in this paper, an automatic mold feature recognition system to recognize protrusion, depression as well as intersecting depression features is proposed and implemented. The recognition of various types of intersecting features is a significant contribution to the literature. The output generated by the accessibility analysis (without discretizing the part) is used as the input to the feature recognition module. The newly developed system is assessed by comparing its results with those of earlier systems. A comprehensive case study is presented that can demonstrate the additional capabilities of the proposed system to those of the present in the published literature.

Keywords

Feature recognition Accessibility analysis Intersecting depression features Die/Mold design Mold undercuts 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Fu MW, Fuh JYH, Nee AYC (1999) Undercut feature recognition in an injection mould design system. Computer-Aided Design 31:777–790zbMATHCrossRefGoogle Scholar
  2. 2.
    Hui KC, Tan ST (1992) Mould design with sweep operations—a heuristic search approach. Computer-Aided Design 24(2):81–91zbMATHCrossRefGoogle Scholar
  3. 3.
    Woo TC (1994) Visibility maps and spherical algorithms. Computer-Aided Design 26(1):6–16zbMATHCrossRefGoogle Scholar
  4. 4.
    Chen LL, Chou SY, Woo TC (1993) Parting directions for mold and die design. Computer-Aided Design 25(12):762–768zbMATHCrossRefGoogle Scholar
  5. 5.
    Chen LL, Chou SY (1995) Partial visibility for selecting a parting direction in mold and die design. J Manuf Syst 14(Number 5):319–330CrossRefGoogle Scholar
  6. 6.
    Dhaliwal S, Gupta SK, Huang J, Priyadarshi A (2003) Algorithm for computing global accessibility cones. J Comput Info Sci Eng 3:200–209CrossRefGoogle Scholar
  7. 7.
    Priyadarshi A, Gupta SK (2004) Generating algorithms for automated design of multi-piece permanent molds. Computer-Aided Design 36:241–260CrossRefGoogle Scholar
  8. 8.
    Khardekar R, Burton G, McMains S (2006) Finding feasible mold parting directions using graphics hardware. Computer-Aided Design 38:327–341CrossRefGoogle Scholar
  9. 9.
    Priyadarshi A, Gupta SK (2006) Finding mold-piece regions using computer graphics hardware. In: Geometric modeling and processing. Lecture notes in computer science, vol 4007. pp 655–662Google Scholar
  10. 10.
    Ravi B, Srinivasana MN (1990) Decision criteria for computer-aided parting surface design. Computer-Aided Design 22(1):11–18CrossRefGoogle Scholar
  11. 11.
    Weinstein M, Manoochehri S (1997) Optimum parting line design of molded and cast parts for manufacturability. J Manuf Syst 16(1):1–12CrossRefGoogle Scholar
  12. 12.
    Fu MW, Nee AYC, Fuh JYC (2002) The application of surface visibility and moldability to parting line generation. Computer-Aided Design 34:469–480CrossRefGoogle Scholar
  13. 13.
    Wong T, Tan ST, Sze WS (1998) Parting line formation by slicing a 3D CAD model. Eng Comput 14:330–343zbMATHCrossRefGoogle Scholar
  14. 14.
    Rubio PMA, Perez GJM, Rios CJ, Vizan IA, Marquez SJJ (2006) A procedure for plastic parts demoldability analysis. Robot Comput-Integr Manuf 22:81–92CrossRefGoogle Scholar
  15. 15.
    Madan J, Rao PVM, Kundra TK (2007) Die-casting feature recognition for automated parting direction and parting line determination. J Comput Info Sci Eng 7:236–248CrossRefGoogle Scholar
  16. 16.
    Chakraborty P, Reddy NV (2008) Automatic determination of parting directions, parting lines and surfaces for two-piece permanent molds. J Mater Process Technol 209:2464–2476Google Scholar
  17. 17.
    Ganter MA, Skoglund PA (1993) Feature extraction for casting core development. J Mech Des 115(4):744–750CrossRefGoogle Scholar
  18. 18.
    Nee AYC, Fu MW, Fuh JYH, Lee KS, Zhang YF (1997) Determination of optimal parting directions in plastic injection mold design. Annals of CIRP 46:429–432CrossRefGoogle Scholar
  19. 19.
    Yin ZP, Ding H, Xiong YL (2001) Virtual prototyping of mold design: geometric moldability analysis for near-net-shape manufactured parts by feature recognition and geometric reasoning. Computer-Aided Design 33:137–154CrossRefGoogle Scholar
  20. 20.
    Bidkar RA, McAdams DA (2004) Feature recognition for injection-molded and die-cast parts. DETC2004-57754. Proceedings of 2004 ASME DET and CIE conference, ASME, Salt Lake CityGoogle Scholar
  21. 21.
    Joshi S, Chang TC (1988) Graph-based heuristics for recognition of machined features from a 3D solid model. Computer-Aided Design 20(2):58–66zbMATHCrossRefGoogle Scholar
  22. 22.
    Ye XG, Fuh JYH, Lee KS (2001) A hybrid method for recognition of undercut features from moulded parts. Computer-Aided Design 33:1023–1034CrossRefGoogle Scholar
  23. 23.
    Kumar N, Ranjan R, Tiwari MK (2007) Recognition of undercut features and parting surface of molded parts using polyhedron face adjacency graph. Int J Adv Manuf Technol 34:47–55CrossRefGoogle Scholar
  24. 24.
    Shin KH, Lee KW (1993) Design of side cores of injections moulds from automatic detection of interference faces. J Des Manuf 3:225–236Google Scholar
  25. 25.
    Ye XG, Fuh JYH, Lee KS (2004) Automatic undercut feature recognition for side core design of injection molds. J Mech Des 126:519–526CrossRefGoogle Scholar
  26. 26.
    Banerjee AG, Gupta SK (2007) Geometric algorithms for automated design of side actions in injection moulding of complex parts. Computer-Aided Design 39:882–897CrossRefGoogle Scholar
  27. 27.
    Hans G (1993) Injection molds-102 proven designs. Hanser Publishers, Munich/Vienna/New York, p 240Google Scholar

Copyright information

© Springer-Verlag London Limited 2010

Authors and Affiliations

  • Rajnish Bassi
    • 1
  • N. Venkata Reddy
    • 2
  • Sanjeev Bedi
    • 1
  1. 1.Department of Mechanical EngineeringUniversity of WaterlooWaterlooCanada
  2. 2.Department of Mechanical EngineeringIndian Institute of TechnologyKanpurIndia

Personalised recommendations