Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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A Multi-Axis Contour Error Controller for High-Speed/High-Precision Machining of Free form Curves

고속 고정밀의 자유곡선 가공을 위한 다축 윤곽오차 제어

  • 이명훈 (경북대학교 대학원 기계공학과) ;
  • 최정희 (경북대학교 대학원 기계공학과) ;
  • 이영문 (경북대학교 기계공학부) ;
  • 양승한 (경북대학교 기계공학부)
  • Published : 2004.04.01
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Abstract

The growing need for higher precision and productivity in manufacturing industry has lead to an increased interest in computer numerical control (CNC) systems. It is well known fact that the cross-coupling controller (CCC) is an effective method for contouring applications. In this paper, a multi-axis contour error controller (CEC) based on a contour error vector using parametric curve interpolator is introduced. The contour error vector is a vector from the actual tool position to the nearest point on the desired path. The contour error vector is the closest error model to the contour error. The simulation results show that the CEC is more accurate than the conventional CCC for a biaxial motion system. In addition, the experimental results on 3-axis motion system show that the CEC is simply applied to 3-axis motions and contouring accuracy is significantly improved.

Keywords

References

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