Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Micro-Crack Analysis from Ultra-Precision Diamond Turning of IR Optic Material

적외선 광학 소재의 초정밀 선삭가공시 발생하는 미세균열 연구

  • Jeong, Byeongjoon (Center for Analytical Instrumentation, Korea Basic Science Institute) ;
  • Kim, Geon-Hee (Center for Analytical Instrumentation, Korea Basic Science Institute) ;
  • Myung, Tae Sik (Department of Mechanical Engineering, Hanbat National University) ;
  • Chung, Eui-Sik (Department of Mechanical Engineering, Hanbat National University) ;
  • Choi, Hwan-Jin (Center for Analytical Instrumentation, Korea Basic Science Institute) ;
  • Yeo, In Ju (College of Engineering, Chungnam National University) ;
  • Jeon, Minwoo (Center for Analytical Instrumentation, Korea Basic Science Institute)
  • 정병준 (한국기초과학지원연구원 광분석장비개발팀) ;
  • 김건희 (한국기초과학지원연구원 광분석장비개발팀) ;
  • 명태식 (한밭대학교 기계공학과) ;
  • 정의식 (한밭대학교 기계공학과) ;
  • 최환진 (한국기초과학지원연구원 광분석장비개발팀) ;
  • 여인주 (충남대학교 기계공학과) ;
  • 전민우 (한국기초과학지원연구원 광분석장비개발팀)
  • Received : 2016.09.13
  • Accepted : 2016.10.18
  • Published : 2016.11.01
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Abstract

Infrared (IR) optic lens can be fabricated by a single point diamond turning (SPDT) machine without subsequent polishing process. However, this machining process often leaves micro-cracks that deteriorate the surface quality. In this work, we propose an experimental design to remove micro-cracks on IR lens. The proposed design gathered data between cutting process condition and Rt surface roughness. This is of great importance because the scale of micro-cracks is a few micrometer. Rt surface roughness is suitable for analyzing maximum peak height signals of the profile. The experimental results indicate that feed per revolution variable is one of the most dominant variable, affecting the generation micro-cracks on IR lens surfaces.

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References

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