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유한요소해석을 이용한 Al 7075 소재의 마이크로 가공특성 평가
구민수(Minsu Ku),김정석(Jeongsuk Kim),강익수(Iksoo Kang),박진효(Jinhyo Park),김평호(Pyungho Kim),이종환(Jonghwan Lee) 한국생산제조학회 2010 한국공작기계학회 추계학술대회논문집 Vol.2010 No.-
This paper presents an analytical solution of micro-scale milling process in order to suggest available machining conditions. The size effect should be considered to determine cutting characteristics in micro-scale machining. A feed per tooth is the most dominant cutting condition related to the size effect in micro-scale milling process. In order to determine the feed per tooth in which chips can be formed, machining characteristics such as cutting force and stress distribution are analyzed by utilizing the finite element analysis.
베어링조합에 따른 HSK 공구시스템의 정적 및 동적 특성해석
구민수(Minsu Ku),김정석(Jeongsuk Kim),강익수(Iksoo Kang),김기태(Kitae Kim) 한국생산제조학회 2009 한국공작기계학회 추계학술대회논문집 Vol.2009 No.-
Recently, the demand of precision parts and molds and dies is increasing considerably from the high growth-rate of high-tech industries. Because of that, the improvement of machining accuracy and productivity has been a hot issue and the research and development has been done for that. The tooling system of high speed machining center is changing from BT tooling system to HSK tooling system. It is because static stiffness and machining accuracy of HSK tooling system are higher than those of BT tooling system. In this paper, static and dynamic characteristics of the HSK tooling System are analyzed according to bearing arrangements. In order that, three different models of the HSK tooling system are modelled by using a 3D modeling/design program. More stable bearing arrangement in the three models can be selected by using the FEA(Finite Element Analysis)
고속가공기용 HSK 툴링시스템의 주축회전속도에 따른 응력분포특성
구민수(Minsu Ku),김정석(Jeongsuk Kim),강익수(Iksoo Kang),박진효(Jinhyo Park),이종환(Jonghwan Lee),김기태(Kitae Kim) 한국생산제조학회 2010 한국생산제조학회지 Vol.19 No.6
Recently, the high-tech industries, such as aerospace industry, auto industry, and electronics industry, are growing up considerably. Because of that, high machining accuracy and productivity of precision parts have been required. The tooling system is important part in the machining center. HSK tooling system is more suitable than BT tooling system for that of high speed machining center. It is because static stiffness and machining accuracy of HSK tooling system are higher than those of BT tooling system. In this paper, stress distribution characteristics of the HSK tooling System is analyzed according to the spindle speed. In order that, the mechanism and the force amplification principle of HSK tooling system are analyzed. The HSK tooling system is modelled by using a 3D modeling/design program. Then stress distribution characteristics of HSK tooling system are analyzed according to spindle speed by using the finite element analysis.