Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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NURBS Interpolation Algorithm for CNC Machines

CNC 공작기계의 NURBS 보간 알고리즘에 관한 연구

  • Hong, Won-Pyo (Dept. of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Yang, Min-Yang (Dept. of Mechanical Engineering, Korea Advanced Institute of Science and Technology)
  • 홍원표 (한국과학기술원 기계공학과) ;
  • 양민양 (한국과학기술원 기계공학과)
  • Published : 2000.12.01
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Abstract

Increasing demands on precision machining of free-form surface have necessitated that the tool to move not only position error as small as possible, but also with smoothly varying feedrates. This paper presents new algorithm for high precision 3D(3-dimensional) NURBS(Non-Uniform Rational B-Spline) interpolation in the reference-pulse technique. Based o the minimum path error strategy, interpolation algorithm was designed to follow the NURBS curve. Using this algorithm a real-time 3D NURBS interpolator was developed in software. The algorithm implemented in a PC showed promising results in interpolation error and speed performance. It is expected that this can be applied to the CNC systems for the high precision machining of complex shapes.

Keywords

References

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