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Using volume morphing to compensate shape distortions associated with injection molding

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Abstract

Manufacturing processes often produce parts with shapes that are distorted from the shapes specified in the CAD models created by designers. Volume morphing, a technique pioneered by Pierre Bézier in 1978 and by Sederberg and Parry in 1986, has been used quite successfully to alter tool-surface designs in order to compensate for shape distortions in manufacturing. FESHAPE, a computer software package created at the General Motors Research and Development Center, automatically modifies CAD models according to a finite set of displacement vectors. This article describes the basic methods of FESHAPE and their application to correct distortions produced by thermal stresses during injection molding.

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Authors and Affiliations

  1. General Motors Research and Development, Warren, MI, 48090, USA

    Ramon F. Sarraga & Peter H. Foss

  2. General Motors North America Product Development, Warren, MI, 48090, USA

    Thomas J. Oetjens

  3. HP Enterprise Services, Palo Alto, CA, USA

    Paul A. LeBlanc

Authors
  1. Ramon F. Sarraga
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  2. Thomas J. Oetjens
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  3. Peter H. Foss
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  4. Paul A. LeBlanc
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Corresponding author

Correspondence to Ramon F. Sarraga.

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Sarraga, R.F., Oetjens, T.J., Foss, P.H. et al. Using volume morphing to compensate shape distortions associated with injection molding. Engineering with Computers 26, 129–135 (2010). https://doi.org/10.1007/s00366-009-0150-5

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  • DOI: https://doi.org/10.1007/s00366-009-0150-5

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