Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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Analysis of the Reduction of the Dynamic Response for the CNC 5 Axles Machining Center

CNC 5축 공작기계의 동응답 저감 해석

  • 김기만 (금오공과대학교 기계공학과) ;
  • 최성대 (금오공과대학교 기계공학부)
  • Received : 2010.09.13
  • Accepted : 2010.10.14
  • Published : 2010.10.30
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Abstract

In this paper, the dynamic response of a CNC 5 Axles machining center was analyzed and then controlled passively by using the dynamic absorber. For the simplification of the theoretical approach, the CNC 5 Axles machining center was modeled as a flexible beam(Bed) having a point mass(Column), two discrete systems(a Table-set and a dynamic absorber). Specifically by using the dynamic absorber, the dynamic response of a Table-set which be caused by the vibration of a flexible beam, was reduced down to the infinitesimal level. The optimal design factors of the dynamic absorber were obtained from the minimization of the cost function. It was found that the natural frequencies of a UT-380 machining center be varied due to the movement of the Table-set. In view of the dynamic response of a Table-set, the larger spring stiffness and mass of the dynamic absorber were found to give the greater reduction.

Keywords

References

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