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산업용 대형 정밀 Handling Robot의 윤활4적분에 관한 실증적 방법에 대한 연구 -4적분: 적유, 적기, 적법, 적량
한용권 ( Yong Kwon Han ),박상철 ( Sang Chul Park ) 대한설비관리학회 2011 대한설비관리학회지 Vol.16 No.1
Since modernized production systems consist of automated equipments, any failure of equipments may cause serious problems on the shop floor. Especially in the electronics industry, the product life cycle is getting shorter and the reduction of product delivery time is becoming more crucial for a company to survive in the marketplace. This paper proposes a methodology for the efficient maintenance of industrial robots. In terms of the lubrication, we identified three maintenance factors of industrial robots; 1) the clefts of the decelerator; 2) excessive alien metallic substances on the U-axis, and 3) excessively long lubrication period. Based on the three factors, the proposed methodology is able to figure out the original reasons of failure as well as the solutions.
PLC기술의 불합리 해결능력 향상 모형개발에 대한 연구 -Zero 지향, 문제해결 중심으로
한용권 ( Yong Kwon Han ),박상철 ( Sang Chul Park ) 대한설비관리학회 2011 대한설비관리학회지 Vol.16 No.1
The paradigm change in IT(Information Technology) industry happens very fast from ten to two years. In this fast changing environment, many enterprises focus on human resources to make them selfmotivated in catching up new technologies. PLCs (Programmable Logic Controller) are at present the basic and universal tool for the automation of manufacturing processes in various industries. However, the education process of PLC programming is not clear enough to train PLC engineers effectively. The essential requirement of PLC programming is knowledge of the process-control algorithm that provides a basis for writing an application in controller`s programming language. This paper proposes an approach to remove all potential errors of control programs by analyzing the behavior of manufacturing devices on a shop floor. The proposed approach has been applied for real cases and the benefits are also provided.
LCD 산업에서 Top Chassis의 마찰교반 용접기술의 응용
한용권 ( Yong Kwon Han ),박상철 ( Sang Chul Park ) 대한설비관리학회 2012 대한설비관리학회지 Vol.17 No.1
This paper presents a methodology to apply the FSW (Friction Stir Welding) technology to the top chassis in the LCD industry. The conventional welding of the top chassis causes fume and requires excessive amount of power. To cope with the problem, we develop procedure making use of merits of the FSW technology. The proposed methodology saves the power and maximizes the light efficiency. we performed various experimentations, which shows the significant improvement of the quality.
디스플레이 산업의 프레스 가공에서 Burr를 제거하기 위한 Six Sigma 방법론
한용권 ( Yong Kwon Han ),박상철 ( Sang Chul Park ) 대한설비관리학회 2011 대한설비관리학회지 Vol.16 No.2
Presented in the paper is a methodology to remove burrs from parts produced by press machines. Burrs of press parts can cause various problems such as the dimensional quality of the part and even the safety of operators. This paper employs the six sigma methodology to accomplish the objective, burr free products. To find the source of the burr, we identify seven potential factors; clearance, material properties, punch wear, skill levels of operators, champer difference of C & R type, vibration of C-type press, and lubrication oil. Through an extensive experiments, we extract three key factors; clearance, punch wear and champer difference of C & R type. For the three key factors, we propose an optimization method and the result is very positive.
디스플레이산업 프레스 가공에서 Pooling불량 개선에 관한 연구 -기술 개방형 Six Sigma 방법론
한용권 ( Yong Kwon Han ),박상철 ( Sang Chul Park ) 대한설비관리학회 2011 대한설비관리학회지 Vol.16 No.2
This paper presents a methodology to improve quality of a display product produced by press machines. The presented methodology is focusing on the pooling problem, which shows a wave pattern on a display screen. To solve the pooling problem, the joint six sigma technique has been employed. To find the source of the wave pattern, we identify six potential factors; the box bending components, the pressure of pad spring, the blending angle, the stripper, the amount of chamfer, and different environment of production lines. For the six potential factors, we performed extensive experiments and analyzed the results by using statistical techniques. Through the analysis we extracted five key factors; the pressure of pad spring, the blending angle, the stripper, the amount of chamfer, and different environment of production lines. For each of the factors, we propose a remedy. As a result, the pooling problem has been solved and the quality of the product has been improved significantly.