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LBP Polygon Mirror 나노가공 부품의 가공조건에 따른 표면정밀도 향상에 관한 연구
성백섭(Back-Sub Sung),차용훈(Yong-Hoon Cha),김일수(Ill-Soo Kim),김선진(Sun-Jin Kim) 한국생산제조학회 2006 한국공작기계학회 춘계학술대회논문집 Vol.2006 No.-
Recent advances in high-tech industry and ultra precision machining technology have led to the development of a wide variety of new materials. The demand for LBP Polygon Mirror finishing parts has increased, which are mainly used for the motor of the printer. so ultra precision machining technology is required. It is important for Polygon Mirror to have the enough strength for the high-speed rotation and high quality Polygon line surface. Polygon Mirror, high-tech nano finishing part, is used for optical instrument such as laser printers, digital copiers, laser fax machines and bar -code readers, etc. Therefore, we have evaluated the machining precision of material surface and tried to determine the optimum machining conditions in order to improve machining precision of S3M. Also we have applied to the production line to reduce the defective proportion. As a result, we have obtained high quality precision of side surface machining in case that the number of revolutions, speed and movement were constant and cutting rate was 0.05㎜. Also we have obtained the same results from the 30 test specimens with constant rough-cutting during the Polygon line machining. The defective proportion decreased from 12 percent to 4~6 percent when the machining conditions selected during the test were applied to the real production line. It is expected that the defective proportion of products can be reduced if we conduct further research on the cleaning and heat treatment process.
고효율 와이어리스 모터개발을 위한 코어 부품 해석 및 특성평가
성백섭 ( Back Sub Sung ) 조선대학교 공학기술연구원 2013 공학기술논문지 Vol.6 No.3
The necessity of electric vehicle (EV) has recently expanded and increased attention while environmental restrictions has been stricter due to energy and environmental issues such as reinforced standards of discharged gas, depletion of fossil fuel, and global warming. EV is an area which expected to occupy 10% of the entire automobile markets in 10 years. If EV is mass-produced 10 years later, companies which advance first into the markets will have advantages and dominated the market in advance. The motor manufacturers for EV, home electronic and industry are rushing into development of 10 kW ~ 100 kW BLDC motor and EV driving motor. This study manufactured BLDC motor core as an EV driving motor system a three-dimensional design program as CATIA V5 R18 is used to model and improve BLDC core. Then transient heat transfer analysis with Ansys Workbench R13, health evaluation of spare parts according to thermal behaviors and achievement an optimal design of the EV motor are shown. A core was molded and sampled through powder compression molding to measure density and hardness. Therefore, the results are presented as follows: A less-weight optimal modelling was performed with a use of CATIAin decreasing from 1.15 kg to 0.99 kg of the core weight. A transient heat transfer with a use of Ansys Workbench R13 and the changes in temperature distribution of the near the BLDC rotor was larger than that of the around the BLDC core. In addition, based on these analysis results the transient heat transfer of many 3D models was performed. The BLDC core drawing works of less-weight optimal modelling were completed through a evaluated health of spare parts according to thermal behaviors. Five species of mold A-type and B-type were randomly extracted for density test, and the two samples were almost the same in molding density, 7.2g/cma . The densities of rare-earth permanent magnet were near to 7.2g/cma ~ 7.5g/cma, which indicates that powder compacting ability is good.
성백섭 ( Back Sub Sung ) 조선대학교 공학기술연구원 2012 공학기술논문지 Vol.5 No.3
The study aimed to develop an ultra-pressure water-jet pump main body using ductile cast iron FCD500, conducted quantitative analysis on the phenomenon of flow or solidification processing for improvement of cast devise. After the selection of ideal condition of cast, it applied to cast of real product shape which is discovered the ideal filling processing under this condition that temperature of molten metal was between 1280℃ and 1300℃. Apart from finishing filling, solidification was commenced rapidly when percentage of solidification completion was between 40-50%, at that moment; the temperature was measured at 1100℃. Moreover, under the condition of temperature below than 900℃, keeping temperature on the center of parts for a certain period of time brings stability of stabilization of heat in parts and organizational stabilization of ductile cast iron.
정밀주조 다이캐스팅을 이용한 자동차 레귤레이터 하우징 성형해석에 관한 연구
성백섭(Back-Sub Sung),김미애(Mi-Ae Kim),차용훈(Yong-Hoon Cha),김정대(Jung-Dae Kim),김덕중(Duck-Joong Kim),이연신(Youn-Sin Lee) 한국생산제조학회 2006 한국공작기계학회 춘계학술대회논문집 Vol.2006 No.-
The casting defects that are caused by molten metal were cold shut formation, entrapment of air, gas, and inclusion. But the control of casting defects has been based on the experience of the foundry engineers. In this thesis, the computer simulation analyzed the flow of molten metal. The quantitative analyses which proposed the effective mold design was executed Flow patterns of 0.1-0.16㎧ molten metal in 15㎜ thin plate casting were investigated in order to optimize die-casting process. As increasing ingate velocity in thin plate casting, cold shot was decreased. The parameters of runner shape that affected on the optimized conditions that was calculated with simple equation were investigated. These die casting process control techniques of automobile regulator housing parts have achieved good agreement with the experimental data of tensile strength, hardness test, and material structure photographies satisfactory results.
정밀주조 다이캐스팅을 이용한 자동차 레귤레이터 하우징 성형해석에 관한 연구
성백섭(Back-Sub Sung),김미애(Mi-Ae Kim),차용훈(Yong-Hoon Cha),김정대(Jung-Dae Kim),김덕중(Duck-Joong Kim),이연신(Youn-Sin Lee) 한국생산제조학회 2006 한국생산제조시스템학회 학술발표대회 논문집 Vol.2006 No.5
The casting defects that are caused by molten metal were cold shut formation, entrapment of air, gas, and inclusion. But the control of casting defects has been based on the experience of the foundry engineers. In this thesis, the computer simulation analyzed the flow of molten metal. The quantitative analyses which proposed the effective mold design was executed Flow patterns of 0.1-0.16㎧ molten metal in 15㎜ thin plate casting were investigated in order to optimize die-casting process. As increasing ingate velocity in thin plate casting, cold shot was decreased. The parameters of runner shape that affected on the optimized conditions that was calculated with simple equation were investigated. These die casting process control techniques of automobile regulator housing parts have achieved good agreement with the experimental data of tensile strength, hardness test, and material structure photographies satisfactory results.
LBP Polygon Mirror 나노가공 부품의 가공조건에 따른 표면정밀도 향상에 관한 연구
성백섭(Back-Sub Sung),차용훈(Yong-Hoon Cha),김일수(Ill-Soo Kim),김선진(Sun-Jin Kim) 한국생산제조학회 2006 한국생산제조시스템학회 학술발표대회 논문집 Vol.2006 No.5
Recent advances in high-tech industry and ultra precision machining technology have led to the development of a wide variety of new materials. The demand for LBP Polygon Mirror finishing parts has increased, which are mainly used for the motor of the printer. so ultra precision machining technology is required. It is important for Polygon Mirror to have the enough strength for the high-speed rotation and high quality Polygon line surface. Polygon Mirror, high-tech nano finishing part, is used for optical instrument such as laser printers, digital copiers, laser fax machines and bar -code readers, etc. Therefore, we have evaluated the machining precision of material surface and tried to determine the optimum machining conditions in order to improve machining precision of S3M. Also we have applied to the production line to reduce the defective proportion. As a result, we have obtained high quality precision of side surface machining in case that the number of revolutions, speed and movement were constant and cutting rate was 0.05㎜. Also we have obtained the same results from the 30 test specimens with constant rough-cutting during the Polygon line machining. The defective proportion decreased from 12 percent to 4~6 percent when the machining conditions selected during the test were applied to the real production line. It is expected that the defective proportion of products can be reduced if we conduct further research on the cleaning and heat treatment process.
성백섭 ( Back-sub Sung ) 조선대학교 공학기술연구원 2016 공학기술논문지 Vol.9 No.4
This paper describes independent multi-phase motor with a maximum torque among DC motor used for Divide Type Powder Molding Core BLDC. Independent multi-phase BLDC motor has characteristic that density of core are independent electrically. This paper is modeling of magnetic flux density BLDC motors, one has low magnetic flux density type and the other has high magnetic flux Density type, and it shows simulation of them, compares its characteristics. This paper focuses on starting performance improvement and magnetic flux density improvement of brushless DC motor for EV. As a result of simulation, the efficiency of BLDC motor of high magnetic flux density 7.41~7.48 g/cm2 is higher than BLDC motor of low magnetic flux density 7.11~7.28 g/cm2. It is also found that the motor efficiency of independent multi-phase BLDC motor was decreased by the magnetic flux density of independent BLDC motor. In order to increase efficiency from the motor and keep the motor operating at its most quality warranty, the high magnetic flux density of divide type power molding core using on motor for an EV is proposed and analyzed specifically.