Journal of the Korean Society of Manufacturing Technology Engineers (한국생산제조학회지)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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An Experimental Study of Ultra-Precision Turning of Optical Glass(BK7)

광학유리(BK7) 초정밀절삭의 실험적 연구

  • 김민재 (전남대학교 대학원 광공학협동과) ;
  • 이준기 (전남대학교 대학원 신소재공학과) ;
  • 윤영곤 (전남대학교 대학원 기계공학과) ;
  • 이현성 (전남대학교 대학원 전기공학과) ;
  • 황연 (한국광기술원 초정밀광학연구센터) ;
  • 김혜정 (한국광기술원 초정밀광학연구센터) ;
  • 김정호 (한국광기술원 초정밀광학연구센터)
  • Received : 2011.04.28
  • Accepted : 2011.08.08
  • Published : 2011.08.15
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Abstract

There is an immense need to obtain nanometric surface finish on optical glass owing to the advantage of improved performance of the components. But owing to brittleness and hardness, optical glass is one of the materials that is difficult to ultra-precision turning. According to the hypothesis of ductile mode machining, regardless of their hardness and brittleness, will undergo a transition from brittle to ductile machining region below a critical undeformed chip thickness. Below this threshold, it is suggested that the energy required for plastic formation. Thus, plastic deformation is the predominant mechanism of material removal in machining these materials in this mode. An experimental study is conducted diamond cutting for machining BK7 glass. The investigation presents the feasibility of achieving nanometric surface and the understanding the mechanism of cutting glass, proving the cutting edge radius effect.

Keywords

References

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