Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Development of a Robotic System for Measuring Hole Displacement Using Contact-Type Displacement Sensors

접촉식 변위센서를 이용한 홀 변위 측정 로봇시스템 개발

  • 강희준 (울산대학교 전기전자정보시스템공학부) ;
  • 권민호 (울산대학교 전기전자정보시스템공학부 대학원) ;
  • 서영수 (울산대학교 전기전자정보시스템공학부) ;
  • 노영식 (울산대학교 전기전자정보시스템공학부)
  • Published : 2008.01.01
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Abstract

For the precision measurement of industrial products, the location of holes inside the products, if they exist, are often selected as feature points. The measurement of hole location would be performed by vision and laser-vision sensor. However, the usage of those sensors is limited in case of big change of light intensity and reflective shiny surface of the products. In order to overcome the difficulties, we have developed a hole displacement measuring device using contact-type displacement sensors (LVDTs). The developed measurement device attached to a robot measures small displacement of a hole by allowing its X-Y movement due to the contact forces between the hole and its own circular cone. The developed device consists of three plates which are connected in series for its own function. The first plate is used for the attachment to an industrial robot with ball-bush joints and springs. The second and third plates allow X-Y direction as LM guides. The bottom of the third plate is designed that various circular cones can be easily attached according to the shape of the hole. The developed system was implemented for its effectiveness that its measurement accuracy is less than 0.05mm.

Keywords

References

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