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엄가정(Yan Jiating),김상오(Sang-Oh Kim),곽재섭(Jae-Seob Kwak) 한국기계가공학회 2008 한국기계가공학회 춘추계학술대회 논문집 Vol.2008 No.-
It is very difficult to polish the surface of magnesium material because of its explosion and fragility properties. Magnetic Abrasive Polishing (MAP) process is one of the nontraditional machining technologies newly developed for these application areas. In the MAP process, a cutting tool that consists of ferrous particles and nonferrous abrasives under oil lubricant is flexible. As a result of this flexibility, the tool can remove a very small amount of material from a workpiece and better surface can be produced after polishing the workpiece. In this study, the MAP of magnesium material was performed. In the experimental verification, design of experimental method was performed to evaluate parameters’ effect of the MAP on polishing results of magnesium material. As a result, it was seen that the MAP was very useful for finishing the magnesium material.
박영환,곽재섭,엄가정,Park, Young-Whan,Kwak, Jae-Seob,Jiating, Yan 한국생산제조학회 2010 한국생산제조학회지 Vol.26 No.2
Base-mounted type(BMT) driving assembly in CNC machine tools is an indispensable part to improve productivity by reducing tool changeover time and to meet the ever-increasing demand of precision machine tools. This study aimed to perform finite element analysis and geometric parameter optimization to improve the efficiency of BMT driving assembly. First, simulations for three-dimensional structural and vibration analysis were performed using ANSYS/Workbench on the initial geometric models of BMT driving assembly. After analyzing stress and deformation concentration zones, several new geometrical models were designed and evaluated by design of experiments and ANSYS/DesignXplorer. Through a series of analysis-evaluation-modification cycles, it was seen that designed models were effective in determining optimal geometry of BMT driving assembly.