Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Workpiece Horizontality and Reference Positioning of Cutting Tool by Measuring Impedance in Ultra-Precision-Machining

초정밀가공 시 임피던스 측정을 통한 시편 수평맞춤 및 공구의 기준위치 설정

  • Lee, Ho-Cheol (School of Mechanical and Automotive Engineering, Catholic Univ. of Daegu) ;
  • Kim, Gi-Dae (School of Mechanical and Automotive Engineering, Catholic Univ. of Daegu)
  • 이호철 (대구가톨릭대학교 기계자동차공학부) ;
  • 김기대 (대구가톨릭대학교 기계자동차공학부)
  • Received : 2011.05.25
  • Accepted : 2011.09.02
  • Published : 2011.12.01
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Abstract

In ultra precision machining, it is necessary to adjust the horizontality and reference position of a workpiece in a noncontact manner. For this, a simple process by measuring impedance between a tool tip and a workpiece which are connected to impedance analyzer is proposed. As the distance between the tool and the workpiece gets closer, the reduction rate of impedance becomes higher over all frequency ranges. By setting threshold value of impedance reduction rate at specific frequencies through preliminary experiments, the distance between the tool and the workpiece can be predicted and it directly enables us to horizontalize the workpiece and to set the tool to the desired reference position.

Keywords

References

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