http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
오늘 본 자료
칼럼의 자계렌즈 특성 분석을 위한 XYZ좌표이송 장치 설계, 제작 및 렌즈 특성 분석
인재준(Jaejun In),김준철(Junchul Kim),강진성(Jinsung Kang),이응기(Eungki Lee) 대한기계학회 2008 대한기계학회 춘추학술대회 Vol.2008 No.5
Development of electron beam lithography needs to analyze of the electric field characteristics of the column lens. For analyzing the electric lens characteristics, it needs to measure the magnetic field distribution. It is needed to measure many points with high precision. Those reasons make us develop 3D magnetic field measuring system. Gauss-meter is installed on the end of y-axis of the developed system then it moves along X, Y, and Z axis and the Gauss-meter measures magnetic force at each position. The developed system is designed to have a counter weight balance against z-axis, such that it needs to reduce the actuation torque when Z axis moves to up and down. The magnetic field distribution data which measured by a Gauss-meter includes 3 directional vectors at each point. With the magnetic field measuring system, 3D magnetic field distribution profile is constituted. Then, the measured magnetic gradient was compared with the computer simulated one. It explains about a matter of the difference between the experimental data and the computer-simulated data.
제품의 특징형상을 이용한 3차원 데이터의 레지스트레이션 방안 연구
김민석(Minseok Kim),인재준(Jaejun In),이응기(Eungi Lee) 한국생산제조학회 2008 한국생산제조학회지 Vol.17 No.4
Recently more complex geometric shapes, including freeform surfaces, are adopted for the design of products to emphasize style or beauty. Modeling of these products is extremely difficult or often impossible. Reverse engineering is the latest technology that can solve the problem by generating CAD models from the physical mockups or prototype models. Reverse engineering uses the coordinate measuring machine(CMM) to get the shape data of products. CMM is limited by the size of the product; therefore it must need the feature to solve it. The tooling-ball which is generally used for feature has difficulty in being used for soft products. Besides, the higher the accuracy of the tooling-ball is, the more expensive its cost is. This study will develop the feature of high accuracy without additional tools and compare the difference of accuracy by it.