Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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A Study on Improvement of Accuracy using Geometry Information in Reverse Engineering of Injection Molding Parts

사출성형품의 역공학에서 Geometry 정보를 이용한 정밀도 향상에 관한 연구

  • 김연술 (전북대학교 대학원 기계공학과) ;
  • 이희관 (전북대학교 자동차 부품 금형 TIC) ;
  • 황금종 (전북대학교 대학원 기계공학과) ;
  • 공영식 (전북 지방 중소기업청) ;
  • 양균의 (전북대학교 기계항공시스템공학부)
  • Published : 2002.10.01
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Abstract

This paper proposes an error compensation method that improves accuracy with geometry information of injection molding parts. Geometric information can give an improved accuracy in reverse engineering. Measuring data can not lead to get accurate geometric model, including errors of physical parts and measuring machines. Measuring data include errors which can be classified into two types. One is molding error in product, the other is measuring error. Measuring error includes optical error of laser scanner, deformation by probe forces of CMM and machine error. It is important to compensate these in reverse engineering. Least square method (LSM) provides the cloud data with a geometry compensation, improving accuracy of geometry. Also, the functional shape of a part and design concept can be reconstructed by error compensation using geometry information.

Keywords

References

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