한국정밀공학회지 (Journal of the Korean Society for Precision Engineering)

  • 제18권9호
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  • Pages.61-70
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  • 2001
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  • 1225-9071(pISSN)
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  • 2287-8769(eISSN)
한국정밀공학회 (Korean Society for Precision Engineering)
권호 표지

역공학에서 센서융합에 의한 효율적인 데이터 획득

Efficient Digitizing in Reverse Engineering By Sensor Fusion

  • 박영근 (영남대학교 기계공학부 대학원) ;
  • 고태조 (영남대학교 기계공학부) ;
  • 김희술 (영남대학교 기계공학부)
  • Park, Young-Kun (Dept.of Mechanical Engineering, Graduate School of Yeungnam University) ;
  • Ko, Tae-Jo (Dept.of Mechanical Engineering, Yeungnam University) ;
  • Kim, Hrr-Sool (Dept.of Mechanical Engineering, Yeungnam University)
  • 발행 : 2001.09.01
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초록

This paper introduces a new digitization method with sensor fusion for shape measurement in reverse engineering. Digitization can be classified into contact and non-contact type according to the measurement devices. Important thing in digitization is speed and accuracy. The former is excellent in speed and the latter is good for accuracy. Sensor fusion in digitization intends to incorporate the merits of both types so that the system can be automatized. Firstly, non-contact sensor with vision system acquires coarse 3D point data rapidly. This process is needed to identify and loco]ice the object located at unknown position on the table. Secondly, accurate 3D point data can be automatically obtained using scanning probe based on the previously measured coarse 3D point data. In the research, a great number of measuring points of equi-distance were instructed along the line acquired by the vision system. Finally, the digitized 3D point data are approximated to the rational B-spline surface equation, and the free-formed surface information can be transferred to a commercial CAD/CAM system via IGES translation in order to machine the modeled geometric shape.

키워드

참고문헌

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