Journal of the Korean Society of Manufacturing Technology Engineers (한국생산제조학회지)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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Performance Evaluation of Radial Error of a Rotary Table at Five-axis Machine Tool

5축 공작기계에서 회전 테이블의 반경 오차 성능 평가

  • 이광일 (경북대학교 일반대학원 기계공학과) ;
  • 양승한 (경북대학교 기계공학부)
  • Received : 2012.03.15
  • Accepted : 2012.03.30
  • Published : 2012.04.15
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Abstract

In this paper, the radial error of a rotary table at five-axis machine tool is evaluated by utilizing ISO 230-2 and estimation method using double ball-bar. The geometric error of a rotary table is defined as position dependent geometric errors or position independent geometric errors according to their physical character. Then estimation method of geometric errors using double ball-bar is simply summarized including measurement path, parametric modeling and least squares approach. To estimate representative radial error, offset error, set-up error which affect to the double ball-bar data, mean value of measured data including CCW/CW-direction are used at estimation process. Radial errors are separated from measured data and used for evaluation with ISO 230-2. Finally, suggested evaluation method is applied to a rotary table at five-axis machine tool and its result is analyzed to improve the accuracy of the rotary table.

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References

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