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뿌리산업의 스마트 공장 구축을 위한 스마트 공장 패키지 S/W 구성 및 클라우드 기반 서비스 시스템
송기형(Ki Hyeong Song),정홍진(Hong Jin Jeong),이동윤(Dong Yoon Lee),김보현(Bo Hyun Kim) 한국생산제조학회 2020 한국생산제조학회지 Vol.29 No.4
The root industry is poorer than other industries in terms of manufacturing environment, including personnel, facility, budget, and information technology usage. For information systems in this industry, a packaged software is preferred for developing a customized software suitable for its manufacturing environment owing to the introduction time and software cost. This paper proposes a method for quick configuration of a package software, considering requirements of an SME in the root industry, and a service system for SMEs to enable package software access at any time and place. The key mechanism for configuring the package software involved classifying the software functions extracted by SMEs into three templates, according to the smartization level of SMEs. The cloud-based service system’s architecture was designed to configure the package software easily and manage its version, history, and users. Implementing the prototype service system revealed its usability and generated research issues that should be examined continuously.
송기형(Ki-Hyeong Song),이동윤(Dong-Yoon Lee),박경희(Kyung-Hee Park),이석우(Seok-Woo Lee),김현철(Hyun-Cheol Kim),제태진(Tae-Jin Je) 한국기계가공학회 2012 한국기계가공학회지 Vol.11 No.2
In order to cope with the requirements of smaller patterns, larger surfaces and lower costs in the fields of displays, optics and energy, greater attentions are now being paid to the development of micro-pattern machining technology. Compared with flat moulds, large drums with micro patterns (roll moulds) have the advantages of short delivery, ease of manufacturing larger surfaces, and continuous moulding. This paper introduced the machining process technology of the roll moulds for display industry. The environmental effects were discussed and the importance of temperature aintenance was experimentally emphasized. The real time monitoring system for micro machining was introduced. A commercial solution was used to simulate the micro grooving and a deformation model of micro machined pattern was finally introduced.
단결정 다이아몬드공구 제작 기술을 통한 초정밀 미세패턴 가공 연구
정성택,송기형,최영재,백승엽,Jung, Sung-Taek,Song, Ki-Hyeong,Choi, Young-Jae,Baek, Seung-Yub 한국금형공학회 2020 한국금형공학회지 Vol.14 No.3
As the consumer market in the VR(virtual reality) and the head-up display industry grows, the demand for 5-axis machines and grooving machines using on a ultra-precision machining increasing. In this paper, ultra-precision diamond tools satisfying the cutting edge width of 500 nm were developed through the process research of a focused ion beam. The material used in the experiment was a single-crystal diamond tool (SCD), and the equipment for machining the SCD used a focused ion beam. In order to reduce the influence of the Gaussian beam emitted from the focused ion beam, the lift-off process technology used in the semiconductor process was used. 2.9 ㎛ of Pt was coated on the surface of the diamond tool. The sub-micron tool with a cutting edge of 492.19 nm was manufactured through focused ion beam machining technology. Toshiba ULG-100C(H3) equipment was used to process fine-pattern using the manufactured ultra-precision diamond tool. The ultra-precision machining experiment was conducted according to the machining direction, and fine burrs were generated in the pattern in the forward direction. However, no burr occurred during reverse machining. The width of the processed pattern was 480 nm and the price of the pitch was confirmed to be 1 ㎛ As a result of machining.
초음파 진동을 하는 다이아몬드 연삭공구의 알루미나 세라믹 연삭 가공에 관한 연구
최영재(Young-Jae Choi),송기형(Ki-Hyeong Song),박경희(Kyung-Hee Park),홍윤혁(Yun-Hyuck Hong),김경태(Kyeong-Tae Kim),이석우(Seok-Woo Lee),최헌종(Hon-Zong Choi) 한국기계가공학회 2012 한국기계가공학회지 Vol.11 No.1
In this study, ultrasonic vibration tool designed and made by using FEM analysis. And machining test was carried out in various machining conditions using ultrasonic vibration capable CNC machine. For work material, alumina ceramic (Al₂O₃) was used while for tool material diamond electroplated grinding wheel was used. To evaluate ultrasonic vibration effect, grinding test was performed with and without ultrasonic vibration in same machining condition. In ultrasonic mode, ultrasonic vibration of 20㎑ was generated by HSK 63 ultrasonic actuator. The two grinding speeds, 1.67㎧ and 3.35㎧, were applied. On the other hand, grinding forces were measured by KISTLER dynamometer.