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백병만(B. Y. Paik),이건상(K. S. Lee) 한국레이저가공학회 2008 한국레이저가공학회 학술대회 논문집 Vol.2008 No.-
Recently, pulse laser has using material micro-machining such as metal, polymer. Pulse duration is very important parameter. It has effect on the laser processing between laser beam and material. In this study, we set up a foundation of pulse laser processing and then describe the optimization of the processing parameters for a thin stainless steel plate of 0.05mm thickness by using nanosecond UV pulse laser.
김산하(Sanha Kim),정도관(Do Kwan Chung),김보현(Bo Hyun Kim),오광환(Kwang Hwan Oh),정성호(Sungho Jeong),주종남(Chong Nam Chu) Korean Society for Precision Engineering 2009 한국정밀공학회지 Vol.26 No.10
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.