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송준엽(Jun Yeob Song),하태호(Tae Ho Ha),이창우(Chang Woo Lee),김동훈(Dong Hoon Kim),전종(Jong Jeon) 대한기계학회 2014 大韓機械學會論文集A Vol.38 No.2
폰 카메라용 렌즈모듈을 구성하는 각 단렌즈의 방향성을 고려한 자동 조합시스템을 개발하였다. 먼저 유동해석을 통하여 렌즈모듈의 조합성 도출 영향인자인 복굴절과 사출성형 조건의 상관성 및 조립 방향성에 따른 수율의 관계를 조사 하였다. 하나의 조립모듈에서 렌즈와 스페이서의 한 세트를 조립하도록 설계하여 생산성 향상 및 장비크기를 최소화하여 기존 장비의 약 25 %정도로 축소가 가능하였다. 또한, 기구적인 정렬기구인 센터링 기구 및 배럴가이드 적용하여 추가적인 비전시스템 없이 사이클 타임의 단축이 가능하였다. 개발한 시스템은 모듈러 설계를 통하여 픽커 및 가이드 등 일부 부품만의 교체로 생산모듈 변경에 대응 가능하도록 하여 급변하는 시장변화 및 소량생산에도 적용 가능하도록 제작되었다. An automatic combination and assembly system for phone-camera lens modules was developed. The system enables the assembly of the relative orientation of the individual lenses making up the lens module. Conventional assembly systems assemble a lens module from eight assembly units. The developed system reduces this number to half by combining each lens and a spacer into a single assembly unit. Also, the number of transfer stages for sequential assembly is minimized without increasing the assembly time. Therefore, high productivity and a footprint that is only about 25 % of that of a conventional assembly system can be realized. The system features a modular design to allow it to cope with rapid changes in the market. Only a few components, such as the picker and guide, need to be replaced for changing to a new assembly model.
송준엽(Jun Yeob Song),강재훈(Jae Hun Kang),김옥구(Ok Koo Kim),김태형(Tae Hyung Kim) Korean Society for Precision Engineering 2005 한국정밀공학회지 Vol.22 No.7
Recently, the high-speed and intelligence technology of machine tools are developed for the high efficiency of productivity. Under the operating condition from the high-speed of machine tools, the various failure modes can occur in core units of manufacturing system. Therefore it is for the reliability concept of machine tool to be required in a design level. And the above-stated technology must be accommodated in the feeding and spindle subsystem, etc those are the core units of machine tools. In this study, we are developed the test-bed of sliding cover (C-plate) in order to evaluating reliability and estimating failure modes of feeding subsystem under operating conditions. The reliability experiment using the developed test-bed and the additional structural analysis executed on single and double structure. We found out the weak parts of sliding cover and were able to predict a life cycle from the experiment results. In this study, we propose the new C-plate model with double link structure to apply the high-speed machine tool in the fundamental guideline.
송준엽(Song, Jun-yeob),유해연(Yoo, Hae-Yeon) 대한건축학회 2018 대한건축학회 학술발표대회 논문집 Vol.38 No.2
Recently, interest in application of new technologies using 3D printers is increasing. As a result, 3D printer education institutions and companies are increasing. Therefore, this study proposes a domestic utilization plan of 3D printer through case study of international architecture using 3D printer. First of all, this study looks up previous works related to 3D printing, and it will look at trends in 3D printing in the field of architecture. Second, it suggests limitations and improvement points by finding examples related to architecture using 3D printing. Through this, this study propose a new architectural utilization possibility of domestic 3D print.
송준엽(Jun Yeob Song),박화영(Hwa Young Park),김현종(Hyun Jong Kim),정연욱(Yeon Wook Jung) Korean Society for Precision Engineering 2004 한국정밀공학회지 Vol.21 No.12
The formation degree of sustain (ITO pattern) decides quality of PDP (Plasma Display Panel). For this reason, it makes efforts in searching defects more than 30 ㎛ as 100%. Now, the existing inspection is dependent upon naked eye or microscope in off-line PDP manufacturing process. In this study developed prototype inspection system of PDP ITO glass is based on line-scan mechanism. Developed system creates information that detects and sorts kinds of defect automatically. Designed inspection technology adopts multi-vision method by slip-beam formation for the minimum of inspection time and detection algorithm is embodied in detection ability of developed system. Designed algorithm had to make good use of kernel matrix that draws up an approach to geometry. A characteristic of defects, as pin hole, substance, protrusion, are extracted from blob analysis method. Defects, as open, short, spots and et al, are distinguished by line type inspection algorithm. In experiment, we could have ensured ability of inspection that can be detected with reliability of up to 95% in about 60 seconds.