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NURBS Curve Interpolator for Controlling the Surface Roughness

표면거칠기를 고려한 NURBS 곡선보간기

  • 최인휴 ((주)터보테크 기술연구소) ;
  • 정태성 (㈜재영솔루텍 플라스틱응용기술연구소) ;
  • 양민양 (한국과학기술원 기계공학과) ;
  • 이동윤 (한국과학기술원 대학원)
  • Published : 2005.05.01

Abstract

Finish machining of a curved surface is often carried out by an NC system with curve interpolation in the field. This NURBS interpolation adopts a feedrate optimizing strategy based on both the geometrical information and dynamic properties. In case of a finish cut using a ball-end mill, the curve interpolator needs to take the machining process into account for more improved surface, while reducing the polishing time. In this study, the effect of low machinability at the bottom of a tool on surface roughness is also considered. A particular curve interpolation algorithm is proposed fur generating feedrate commands which are able to control the roughness of a curved surface. The simulation of the machined surface by the proposed algorithm was carried out, and experimental results are presented.

Keywords

NURBS Curve Interpolator;PC-NC;Variable Feedrate;Extended Surface Roughness Model

References

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