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다이어몬드 공구를 이용한 Ni 도금층의 Micro V-Groove 가공
박동삼(D. S. Park),윤대진(D. J. Yoon),장호수(H. S. Jang) 한국생산제조학회 2007 한국공작기계학회 춘계학술대회논문집 Vol.2007 No.-
Fine microgroove is the key component to fabricate micro-grating, micro-grating lens and so on. Conventional groove fabrication methods such as etching and lithography have some problems in efficiency and surface integrity. Therefore, mechanical micromachining methods using single crystal diamond tools and ultraprecision machine tools are expected to be very efficient, and widely studied. This study deals with creation of ultra-precision micro V-grooves of nickel plated layer using non-rotational single crystal diamond tool and 3-axis micro stages. Micro V-groove shape and chip formation were investigated for the analysis of machinability of Ni plated layer.
Micro V-Groove 가공시 단결정 다이어몬드 공구의 마멸
박동삼(D. S. Park),한진용(J. Y. Han),윤대진(D. J. Yoon),장호수(H. S. Jang) 한국생산제조학회 2007 한국공작기계학회 춘계학술대회논문집 Vol.2007 No.-
Fine microgroove is the key component to fabricate micro-grating, micro-grating lens and so on. Conventional groove fabrication methods such as etching and lithography have some problems in efficiency and surface integrity. Therefore, mechanical micromachining methods using single crystal diamond tools is expected to be very efficient, and widely studied. This study deals with tool wear characteristics in the creation of micro V-grooves of electroless nickel coated plate using non-rotational single crystal diamond tool and 3-axis micro stages. For the analysis of tool wear characteristics in micro V-grooving, 3 dimensional images of tool tip are measured using noncontact type 3 dimensional shape measurement system.
초음파 금속 용착용 혼의 진동해석 및 형상설계에 관한 연구
김은미(E.M.Kim),장호수(H.S.Jang),김선아(S.A.Kim),서정석(J.S.Seo),박동삼(D.S.Park) (사)한국CDE학회 2010 한국 CAD/CAM 학회 학술발표회 논문집 Vol.2010 No.1
Ultrasonic energy that is the high-frequency vibration above 20kHz is used in various processing fields such as plastic welding, metal welding, grilling and etc. A ultrasonic metal welding machine consist of a power supply that converts 50~60Hz electric power into 20kHz~40kHz electrical energy, a booster which decreases or amplifies the amplitude from the transducer, a horn which welds workpieces by transmitting vibration energy. The transducer, booster, horn have to be designed and manufactured accurately, because measurements such as the shape, length, mass and etc. have effects on the resonant frequency and the vibration mode. In this study, we calculated and analyzed the natural frequency to find the optimal design of the horn by the modal analysis and harmonic analysis using Ansys.