Analysis on the Vibration Characteristics of Ultra Precision Machine Tools

초정밀 가공 기계의 진동 특성 해석

  • 김성걸 (서울대학교 정밀기계설계 공동연구소) ;
  • 박영일 (서울산업대학교 기계설계학과) ;
  • 김석현 (강원대학교 정밀기계공학과)
  • Published : 1994.10.31

Abstract

Ultra-precision machine tool equipped with the diamond bite tip is used to machine optical products, drums of VTR or computer hard disk. It needs nano technology in the surface roughness of workpiece. To perform the nano scale machining, ultra-precision machine tool must be designed and manufactured in consideration of the vibration characteristics. In this paper, using the finite element analysis, we investigate the modal parameters of the ultra-precision machine tool structures, which use cast iron, granite and alumina ceramic for the bed materials. To verify the numerical results, we manufacture a model of ultra-precision machine tool using granite bed and perform impulse test. Through the theoretical and experimental analyses, we could compare and estimate the vibration characteristics of the three models for the ultra-precision machine tools.

Keywords