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사축식 유압 피스톤 펌프의 경전각에 따른 펌프 구동범위에 대한 실험적 연구
정재연(J.Y. Jung),백일현(I.H. Beak),주호영(H.Y. Ju),송규근(K.K. Song),조인성(I.S. Cho),오석형(S.H. Oh),장동혁(D.H. Jang) 대한기계학회 2009 대한기계학회 춘추학술대회 Vol.2009 No.5
To improve the performance of the bent-axis type axial piston pump driven by the tapered piston, it is necessary to know the driving characteristics and mechanism of the tapered piston and the cylinder block. Since each piston not only rotates on its axis and reciprocates in the cylinder bore, but also revolves around the axis of the driving shaft, it is difficult to analyze the driving mechanism theoretically. The theoretical mechanism for the bent-axis type axial piston pump is studied by using the geometrical method. The driving range of the tapered piston is determined by theoretical equations. The experimental results show that the cylinder block is driven by one tapered piston in a limited range and the core parameters such as driving factor of the piston and the ahead delay angle influenced performance of the bent-axis type axial piston pump
사축식 유압 피스톤 펌프의 디스크 편심률에 따른 실린더블록 구동영역에 대한 연구
정재연(J. Y. Jung),백일현(I. H. Baek),조인성(I. S. Cho),송규근(K. K. Song),오석형(S. H. Oh),정용욱(Y. W. Jeong) 유공압건설기계학회 2008 드라이브·컨트롤 Vol.5 No.2
To improve the performance of the bent axis type axial piston pump driven by the tapered piston, it is necessary to know the driving characteristics and mechanism of the tapered piston and the cylinder block. Since each piston not only rotates on its axis and reciprocates in the cylinder bore, but also revolves around the axis of the driving shaft, it is difficult to analyze the driving mechanism theoretically. The theoretical mechanism for the bent axis type axial piston pump is studied by using the geometrical method. The driving range of the tapered piston is determined by theoretical equations. The results show that the cylinder block is driven by one tapered piston in a limited range and the core parameters such as driving factor of the piston and the ahead delay angle influenced performance of the bent axis type axial piston pump
사판식 유압 피스톤 펌프의 실린더블록과 밸브 플레이트의 응력해석
김지홍(J. H. Kim),조인성(I. S. Cho),백일현(I. H. Baek),정재연(Jae-Youn Jung),오석형(Suk-Hyung Oh) 한국트라이볼로지학회 2004 한국트라이볼로지학회 학술대회 Vol.39 No.-
Recently, the technologies related to the swash plate type oil hydraulic piston pump are requiring extreme technologies to overcome the limit of high efficiency in cope with high speed and pressure, and are devoted to compact the unit, to gain low noise level, and to adopt electronic technologies, and the question regarding to maximize the mechanical efficiency, that is, to minimize the torque loss by minimizing the leakage loss in the relative sliding region but these are in trade-off relation that tribological responding is very difficult. Cylinder block-valve pate in high speed relative sliding motion has the characteristics that shoud be extremely controlled for the optimization of these leakage loss and mechanical efficiency, and pressure resistance designing of them is important for high pressure performance. But, studies on the stress analysis of these parts have not been performed briskly, so in this paper the stress distribution and the region where the highest displacement appears are described through the static stress analysis using CATIA V5. Through the future studies on these theme, it has the purpose of finding the suitable materials for the other parts as well as cylinder block and valve plate, in cope with high pressure operation through the stress analysis with the most similar conditions for the practical operation.