Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Micromachining Using Hybrid of Laser Beam and Electrical Discharge Machining

레이저 빔 가공과 방전 가공을 이용한 복합 미세 가공

  • Kim, San-Ha (School of Mechanical & Aerospace Engineering, Seoul National Univ.) ;
  • Chung, Do-Kwan (School of Mechanical & Aerospace Engineering, Seoul National Univ.) ;
  • Kim, Bo-Hyun (Department of Mechanical Engineering, Soongsil Univ.) ;
  • Oh, Kwang-Hwan (School of Information & Mechatronics, GIST) ;
  • Jeong, Sung-Ho (School of Information & Mechatronics, GIST) ;
  • Chu, Chong-Nam (School of Mechanical & Aerospace Engineering, Seoul National Univ.)
  • 김산하 (서울대학교 기계항공공학부) ;
  • 정도관 (서울대학교 기계항공공학부) ;
  • 김보현 (숭실대학교 기계공학부) ;
  • 오광환 (광주과학기술원 정보기전공학부) ;
  • 정성호 (광주과학기술원 정보기전공학부) ;
  • 주종남 (서울대학교 기계항공공학부)
  • Published : 2009.10.01
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Abstract

Although nanosecond pulsed laser drilling and milling are rapid and non-wear processes in micromachining, the quality cannot meet the precision standard due to the recast layer and heat affected zone. On the other hand, electrical discharge machining (EDM) is a well-known high precision machining process in micro scale; however, the low material removal rate (MRR) and tool wear remain as drawbacks. In this paper, hybrid process of laser beam machining (LBM) using nanosecond pulsed laser and micro EDM was studied for micro drilling and milling. While the quality of the micro structure fabricated by this hybrid process remains as high as direct EDM, the machining time and tool wear can be reduced. In addition, variable depth of layer was introduced as an effective method improving efficiency of hybrid milling.

Keywords

References

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