Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Non-contacting OMM (On Machine Measurement) based on CAD Model

CAD 모델 기반 비접촉 기상 측정에 관한 연구

  • 권세진 (영남대학교 기계공학과 대학원) ;
  • 이정근 (영남대학교 기계공학과 대학원) ;
  • 박정환 (영남대학교 기계공학부) ;
  • 고태조 (영남대학교 기계공학부) ;
  • 김선호 (한국기계연구원)
  • Published : 2003.11.01
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Abstract

An industrial product is designed and fabricated, followed by the inspection process in order to check whether it is dimensionally tolerable or not. The machining process produces a part such as a mold or die, in which the three-dimensional coordinate might be measured by a CMM (Coordinate Measuring Machine) for assessment of its dimension. It is not ignorable, however, that a CMM measurement requires a lot of operating time and cost, which has led to many studies on the OMM system. The OMM system can be categorized into contact and non-contact types, and each of which has its own strengths and weaknesses. Non-contacting types generally utilize structured lights, sounds or magnetic fields. Though they show rather poor performance in positional accuracy, the measuring speed is faster than the contacting probes. This paper presents the development of an OMM system based on a non-contacting laser displacement sensing apparatus and CAD model. The system is composed of software modules of center-aligning and measuring, which has been operated and verified on a NC machining center on a shop floor.

Keywords

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