Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Cutting Characteristics on Rake Angle in Laser-Assisted Machining of Silicon Nitride

질화규소의 예열선삭가공시 경사각에 따른 절삭특성

  • Shin, Dong-Sig (Intelligent Manufacturing Systems Research Division, KIMM) ;
  • Lee, Jae-Hoon (Intelligent Manufacturing Systems Research Division, KIMM) ;
  • Lim, Se-Hwan (Intelligent Manufacturing Systems Research Division, KIMM) ;
  • Kim, Jong-Do (Division of Marine System Engineering, Korea Maritime University) ;
  • Lee, Su-Jin (Graduate School, Korea Maritime University)
  • 선동식 (한국기계연구원 지능형생산시스템연구본부) ;
  • 이제훈 (한국기계연구원 지능형생산시스템연구본부) ;
  • 임세환 (한국기계연구원 지능형생산시스템연구본부) ;
  • 김종도 (한국해양대학교 기관시스템공학부) ;
  • 이수전 (한국해양대학교 대학원)
  • Published : 2009.04.01
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Abstract

In the last few years, lasers have found new applications as tools for ceramic machining which is laser-assisted machining(LAM). LAM process for the machining of difficult-to-machine materials such as structural ceramics, has recently been studied on silicon nitride workpiece for a wide range of operating condition. However, there have been few studies on rake angle in LAM process. In this paper we analyzed difference of machinability between positive and negative rake angle in tools. We have obtained interesting results that we could eliminate chattering, lower specific cutting and cutting ratio in case of positive rake angle. The results suggest that positive rake angled tools can make more plastic deformation and stable cutting of silicon nitride in comparison with negative rake angled one.

Keywords

References

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