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황인옥(I. O. Hwang),이종환(J. H. Lee),김전하(J. H. Kim),강명창(M. C. Kang),김정석(J. S. Kim),이득우(D. W. Lee) 한국정밀공학회 2004 한국정밀공학회 학술발표대회 논문집 Vol.2004 No.10월
As the technique of high-speed end-milling is widely adopted to in machining field. The investigation for microscopic precision of workpiece is necessary for machinability evolution. In this study, cutting force, cutting temperature and microhardness were investigated to evaluate damaged layer in conventional machining and high-speed machining. Damaged layer was measured using optical microscope. The thickness of damaged layer depends on cutting process parameters, specially feed per tooth and radial depth. It is obtained that the characteristics of damaged layer is high-speed machining better than conventional machining.
냉각ㆍ윤활방식 변화에 따른 가공면의 미시적 정밀도 평가
황인옥(I. O. Hwang),권동희(D. H. Kwon),강명창(M. C. Kang),김정석(J. S. Kim) 한국정밀공학회 2006 한국정밀공학회 학술발표대회 논문집 Vol.2006 No.5월
As the technique of high-speed end-milling is widely adopted to machining field. The investigation for microscopic precision of workpiece is necessary for machinability evolution. The environmental pollution has become a big problem in industry and many researcher have investigated in order to preserve the environment. The environmentally conscious machining and technology have more important position in machining process. In the milling process, the cutting fluid has greatly bad influence on the environment. The damaged layer affect mold life and machine parts in machining. In this study, the cutting force, the surface roughness, micro hardness and residual stress is evaluated according to machining environment. Finally, it is obtained that the characteristics of damaged layer in environmentally conscious machining is better than that in conventional machining using cutting fluid.
권동희(D. H. Kwon),황인옥(I. O. Hwang),강명창(M. C. Kang),김전하(J. H. Kim),김정석(J. S. Kim),안중환(J. H. Ahn) 한국정밀공학회 2006 한국정밀공학회 학술발표대회 논문집 Vol.2006 No.5월
This paper presents an investigation on the characteristics for new micro tool dynamometer by using the ultrahigh-speed air turbine spindle. Recently, the ultrahigh-speed micro flat endmilling has been investigated actively due to request of accuracy improvement and productivity of die and mould manufacturing. To perform efficient ultrahigh-speed micro flat endmilling, evaluation of ultrahigh-speed machinability must be studied preferentially and it can be identified by investigation of cutting force. The cutting forces in ultrahigh-speed micro flat endmilling can be measured by micro tool dynamometer. But general dynamometer has low natural frequency and so is improper for measuring very high frequency cutting forces in ultrahigh-speed micro flat endmilling. In this study, the micro tool dynamometer which has very high natural frequency is newly designed.
알루미늄 합금(AC4C.1)의 환경친화적 고속가공 특성
황인옥,강익수,강명창,김정석 한국공작기계학회 2003 한국공작기계학회 추계학술대회논문집 Vol.2003 No.-
Recently, environmental pollution has become a significant problem in industry and many researches have been investigated in order to preserve the environment. Environmentally conscious machining and technology have more and more important position in machining process. The cutting fluid has greatly bad influence on the environment in the milling process. This research is experimental study on high speed machining of aluminum alloys through environmentally conscious machining. In this study, the machinability surface roughness and chip appearance was investigated in the machining of aluminum alloys applied dry machining and using cutting fluid, oil mist.