수압 동력발생 피스톤 펌프의 펌핑구조에 관한 연구

As the water hydraulics is more and more highlighted in wide applications, many varieties of research on design, materials and manufacturing methods of water hydraulic components have been carried out. Especially, the water hydraulic piston pump used to be the subject of study in relation to its tilting cam drive mechanism. However, in spite of same operating mechanism with various relative sliding parts, the water hydraulic axial piston pump have more friction and leakage than oil hydraulic one because of lower viscosity and poor lubricated condition by using tap water as working fluid. Therefore, in order to reduce the friction and leakage, rod type pistons and Birfield joint as a constant velocity drive of the tilting cam are adopted. In this paper, we have designed the tilting cam drive mechanism consist of rod type pistons and Birfield joint, and analyzed the drive characteristics of it.