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최헌종(Hon-Zong Choi),강은구(Eun-Goo Kang),이석우(Seok-Woo Lee),홍원표(Won-Pyo Hong) Korean Society for Precision Engineering 2005 한국정밀공학회지 Vol.22 No.5
The application of focused ion beam (FIB) technology in micro/nano machining has become increasingly popular. Its use in micro/nano machining has advantages over contemporary photolithography or other micro/nano machining technologies such as small feature resolution, the ability to process without masks and being accommodating for a variety of materials and geometries. In this research, fabrication of micro plasma electrode was carried out using FIB. The one of problems of FIB-sputtering is the redeposition of material including Ga+ ion source during sputtering process. Therefore the effect of the redeposition was verified by EDX. And the micro plasma electrode of copper was fabricated by FIB.
최헌종(Hon-Zong Choi),박정호(Jung-Ho Park),남중종(Jung-Jong Nam),남성호(Sung-Ho Nam),황정호(Jung-Ho Hwang) 대한기계학회 2004 대한기계학회 춘추학술대회 Vol.2004 No.11
This paper presents collaboration model for information system of engineering collaboration Hub system for mold industry, the e-Manufacturing Hub System. It is shown how the collaboration ,between companies in the field of the mold industry, can progressed by collaboration templates of engineering collaboration Hub system. The e-Manufacturing Hub System, is planned and driven by Korean Government and KITECH, has a goal to establish online engineering collaborative value chain in a consortium of small and medium mold related companies. We have researched the collaboration model of this consortium for the use of the e-Manufacturing Hub System. In this paper, some templates for managing internal engineering data and job structure in the viewpoint of individual company and some templates for sharing engineering data and co-work between each other companies.
초음파 진동을 하는 다이아몬드 연삭공구의 알루미나 세라믹 연삭 가공에 관한 연구
최영재(Young-Jae Choi),송기형(Ki-Hyeong Song),박경희(Kyung-Hee Park),홍윤혁(Yun-Hyuck Hong),김경태(Kyeong-Tae Kim),이석우(Seok-Woo Lee),최헌종(Hon-Zong Choi) 한국기계가공학회 2012 한국기계가공학회지 Vol.11 No.1
In this study, ultrasonic vibration tool designed and made by using FEM analysis. And machining test was carried out in various machining conditions using ultrasonic vibration capable CNC machine. For work material, alumina ceramic (Al₂O₃) was used while for tool material diamond electroplated grinding wheel was used. To evaluate ultrasonic vibration effect, grinding test was performed with and without ultrasonic vibration in same machining condition. In ultrasonic mode, ultrasonic vibration of 20㎑ was generated by HSK 63 ultrasonic actuator. The two grinding speeds, 1.67㎧ and 3.35㎧, were applied. On the other hand, grinding forces were measured by KISTLER dynamometer.
최영재(Young Jae Choi),송기형(Ki Hyeong Song),이석우(Seok Woo Lee),최헌종(Hon Zong Choi) Korean Society for Precision Engineering 2014 한국정밀공학회지 Vol.31 No.3
Micro patterns are used to maximize the performance and efficiency of the product in many industries such as energy, display, printing, biology, etc. Nowadays, the fabrication technology for micro patterns has been developed in various ways such as photolithography, laser machining, electrical discharge machining and mechanical machining. Recently, mechanical machining the size of smaller than 1 micrometer could be tried, because the technology related to the machining was developed brilliantly. This paper shows the experiments using cutting processes in order to fabricate the micro pattern. Micro patterns of the size of several micrometers were machined by the diamond tools of two different shape, the deformation and generation of burr were investigated.