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G-code control 을 이용한 웹 기반 금형 가공 공정 모니터링 & 컨트롤 시스템 개발
김건희(G. H. Kim),최진화(J. H. Choi),전병철(B. C. Jeon),조명우(M. W. Cho) 한국정밀공학회 2004 한국정밀공학회 학술발표대회 논문집 Vol.2004 No.10월
The target of this paper is the development of Web-based monitoring & control system which is for effective and economic management of mold manufacturing process. This system has three module; G-code Control, Monitoring Module and Result analysis module. Also, as the environment of development is based on internet, this system which is possible to the remote site management of manufacturing process works on Web. To be possible to control the manufacturing monitoring by client, each module is made ActiveX control and is based on socket communication. This system makes the foundation which is possible to manage the mold manufacturing process efficiently from remote site by matching real-time monitoring with manufacturing process in factory using G-code control and displaying the result of manufacturing using Ch-CGI.
적외선 우주배경복사 관측 실험 2(CIBER2) 국제 공동 연구
이대희,박원기,문봉곤,박성준,김민규,김건희,남욱원,표정현,정웅섭,박영식,김일중,한원용,Lee, D.H.,Park, W.K.,Moon, B.G.,Park, S.J.,Kim, M.G.,Kim, G.H.,Nam, U.W.,Pyo, J.,Jeong, W.S.,Park, Y.S.,Kim, I.J.,Han, W. 한국천문학회 2015 天文學論叢 Vol.30 No.1
First light galaxies have predictable linear clustering, and are expected to produce fluctuations with a characteristic spatial power spectrum, which peaks at an angular scale of ~ 10 arcminutes and in the $1-2{\mu}m$ spectral regions. The Cosmic Infrared Background ExpeRiment 2 (CIBER2) is a dedicated sounding rocket mission for measuring the fluctuations in the extragalactic infrared background light, following up the previous successful measurements of CIBER1. With a 28.5 cm telescope accompanied with three arms of camera barrels and a dual broadband filter on each H2RG (${\lambda}_c=2.5{\mu}m$) array, CIBER2 can measure 6 bands of wide field ($1.1{\times}2.2$ degrees) up to 3 AB magnitudes deeper than CIBER1. This project is leaded by California Institute of Technology/Jet Propulsion Laboratory, collaborating internationally with Institute of Space and Astronautical Science in Japan, Korea Astronomy and Space Science Institute, Korea Basic Science Institute, and Seoul National University. The Korean team is in charge of 1) one H2RG scientific array, 2) ground station hardware and software, 3) telescope lenses, and 4) flight and test bed electronics fabrication. In this paper, we describe the detailed activities of the Korean participation as well as the current status of the CIBER2 project.
세라믹 마이크로 공구의 금속재 미세절삭 가공 특성에 관한 연구
김건희(G. H. Kim),정우철(W. C. Jung),허영무(Y. M. Heo),신광호(K. H. Shin),장성호(S. H. Chang),윤길상(G. S. Yoon),이근안(G. A. Lee),권영삼(Y. S. Kwon) 한국소성가공학회 2010 한국소성가공학회 학술대회 논문집 Vol.2010 No.10
In this study, the efficiency of ceramic micro cutting tool with abrasive-type was evaluated by basic micro cutting experiments. Generally, micro drill and endmill made of tungsten-carbide which have sharply cutting edge are worn out rapidly. Therefore, ceramic micro tool which has minute bump feature was proposed in this study. In experiments, micro hole and slot shape were fabricated by ceramic micro tool. Finally the quality of fabricated hole and slot were evaluated and tool wear trend was observed by microscope.
금형코어 재료의 저온 마이크로 절삭 가공시 버 발생 특성에 관한 연구
김건희(G. H. Kim),손종인(J. I. Sohn),윤길상(G. S. Yoon),이성희(S. H. Lee),허영무(Y. M. Heo),조명우(M. W. Cho) 한국생산제조학회 2009 한국공작기계학회 추계학술대회논문집 Vol.2009 No.-
In this study, a research on the micro cutting process with the mold core material at low temperature environment was performed. In macro cutting fields, the cryogenic cutting process, mainly turning process, has been applied to cut the refractory metal but, the serious problems may be generated in micro cutting fields by the cryogenic condition. However, if the proper low temperature is applied to micro cutting area, the cooling effect of cutting heat is expected. Such effect can make the reduction of tool wear and burr formation, For verifying this process, the micro cutting experiment at low temperature was performed and SEM images were analyzed.