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재구성 가능형 모듈러 마이크로 공작기계의 구조형태 창성방법에 관한 연구
최영휴(Y. H. Choi),박현만(H. M. Park),장성현(S. H. Jang),박종권(J. K. Park) 한국생산제조학회 2005 한국공작기계학회 추계학술대회논문집 Vol.2005 No.-
This study describes a new method of constructing reconfigurable machine tool configuration from a set of modules or components. Our method defines module posture vector for each module and mutual connectivity coefficient matrix for adjacent two modules. All of machine configurations possible to be generated from any two combined modules can be determined by quadratic form of two associated posture vectors. Furthermore, all of possible RMT configurations generating from a series of multiple modules also can be obtained by multiplying quadratic form of two adjacent posture vectors consecutively. Finally, machining functionality is checked for all the generated machine confirgurations, and useful machine configurations can be selected.
최영휴(Y. H. Choi),김인수(I. S. Kim),장성현(S. H. Jang),안국진(K. J. Ahn),이재종(J. J. Lee) 한국생산제조학회 2006 한국공작기계학회 춘계학술대회논문집 Vol.2006 No.-
In this study, we made four design alternatives of a hot embossing machine structure form the results of static analysis and general function analysis, including working space, easy assembling, space for additional stiffness, feed-slider accuracy, and so on, we could decide the best one among the for alternatives.
마이크로 밀링 머신의 저진동 경량화를 위한 구조 최적설계
최영휴(Y. H. Choi),장성현(S. H. Jang),김성민(S. M. Kim),김실근(S. G. Kim),박종권(J. K. Park) 한국생산제조학회 2007 한국공작기계학회 춘계학술대회논문집 Vol.2007 No.-
This paper presents structural design optimization of micro milling machine for lightweight and minimum vibrations using a genetic algorithm. The design problem is to find out thickness of structural members which minimize vibrations, the static compliance, dynamic compliance and weight of a micro milling machine structure under several constraints such as dimensional constraints, maximum deflection limit, safety factor criterion and maximum vibration amplitude limit. Optimization results showed a little reduction in compliance and vibration amplitude at the spindle nose of micro milling machine in spite of decrease in machine weight.