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이종신 한국로봇학회 2010 로봇학회 논문지 Vol.5 No.4
This study proposes the design method for the robot rotation arm which the end effector that is connected in end of the arm keeps parallel motion even though the robot arm rotates. So far, most robot arm rotates together the end effector when the arm rotates. For this, this study proposes the mechanism that the arm is linked to each 4 parallel link so that rotation is possible by 4 pins, and the rotation arm connects 2 joints of diagonal line direction to a link in each 4 joint for rotation, and designs so that can change length of the link. For verification of design, this study targeted that develop the rotation arm for medical examination that use in ophthalmology. It is important that a medical robot offers comport to patient and design compactly so that medical examination and treatment space may can be defined enough. It is designed so that all drive elements may be positioned on interior of the arm and optimization of design for main parts was carried out in this study for this. The robot arm which is developed in this study manufactured to use by medical phoropter arm, and got good result by an experiment. The robot rotation arm which is proposed in this study is judged to contribute very effectively in case use of a medical robot arm for medical examination and treatment, also the robot arm which the end effector that is connected in the end of the arm needs to keep parallel motion. And, the robot arm which is developed in this study made an application as license.
방부처리 원주가공재의 방부제 침윤도 향상 및 건조 할렬 방지를 위한 폴리에틸렌 글리콜 처리 효과
이종신,윤선미 한국목재공학회 2002 목재공학 Vol.30 No.4
PEG 처리가 고함수율 상태의 방부처리 삼나무 원주가공재의 건조 할렬 방지 및 방부제의 침투성에 미치는 영향을 검토하였다. 농도 10%의 방부제(Basilit CFK) 용액에 1일간 침지 처리한 시험체의 표면에 농도 50%의 PEG-400을 각각 3, 5, 10회 도포하여 30일간 천연 건조한 후, 할렬의 발생정도 및 변재부의 방부제 침윤도를 조사하였다. 변재부의 방부제 침윤도를 조사한 결과, 방부제 단독처리 시험체에서는 약 23.2%였으나, 방부제-PEG 처리 시험체에서는 약 51.2∼64.5%로 비교적 높은 값을 나타내 PEG 처리에 의하여 방부제의 침투가 촉진된 것으로 추정되었다. 천연건조 기간 중에 방부제-PEG 처리 시험체에서의 건조 할렬 발생은 PEG 도포횟수의 증가와 함께 뚜렷하게 감소하였을 뿐만 아니라 발생된 몇 개의 할렬의 크기도 방부제 단독처리 시험체에서 발생한 것에 비하여 현저하게 작았다. 그러나 2개월간 옥외 폭로 후에는 방부제-PEG처리 시험체에서 많은 할렬이 발생하여 PEG 처리 효과가 인정되지 않았으나, PEG 처리 후, 폴리우레탄수지 래커로 도장 처리한 결과, 옥외 폭로기간 중에 할렬 발생이 뚜렷하게 방지되었다. We investigated the effect of polyethylene glycol(PEG) treatment of preservative treated green japanese cedar(Cryptomeria japonica) round posts on their preservative penetration and check formation during the air drying. The round rods were dip-treated in 10% preservative solution of Basilit CFK for 1 day, followed by application(3, 5, and 10 times) with 50% PEG-400 solution, and then dried for 30 days under natural conditions. The rate of preservative penetration into sapwood was a low by 23.2% without PEG treatment, whereas that was a high by about 51.2∼64.5% with PEG treatment. From these results, it was assumed that PEG played an affirmative role in the penetration of preservative components loaded onto the surface of round rods by dipping. During the air drying, the formation of drying checks decreased significantly with increasing application times of PEG. Even though some drying checks in PEG treated rods were developed the number and size of checks was reduced remarkably by PEG treatment. After 2 months of outdoor exposure, PEG treatment failed to reduce checking in preservative-treated rods whereas finishing of polyurethane resin lacquer after PEG treatment was significantly effective in preventing check development.
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이종신,이충구 ( Jong Shin Lee,Chung Gu Lee ) 충북대학교 산업과학기술연구소 1995 산업과학기술연구 논문집 Vol.9 No.2
Abstract_Roman Electronic components and electronic systems are rapidly shrinking in size while ther complexity and capability continue to grow at an amazing rate. This has produced a dramatic increase in the power density, resulting in rapidly rising te