Analysis of Thermal Distribution and Compensation of Error for Spindle of Machining Center

공작기계 스핀들 부위의 열분포 분석 및 오차 보정

  • 고한서 (성균관대학교 기계공학부) ;
  • 박광희 (성균관대학교 대학원 기계설계학과) ;
  • 서형렬 ((주) 두산메카텍 공작기계 사업 부문) ;
  • 하종수 ((주) 두산메카텍 공작기계 사업 부문)
  • Published : 2004.04.28

Abstract

Thermal error compensation has been developed for CNC (Computer Numerical Control) machining center with moving heat sources. The thermal error in CNC machining center has an effect on machining accuracy more than the geometric error does. Thus, temperature distributions of a spindle unit have been analyzed numerically by a Finite Differential Method and experimentally by an infrared (IR) camera in this study. A multiple variable method has been derived to estimate the thermal deformation of the machine origin stably and effectively after measuring deformation and temperature data. The experimental results for a vertical machining center have shown that the thermal errors of the machine origins were reduced more than 30% by the developed method.

Keywords