The Deformation Analysis And Structural Optimization Of The BY004-1Type Axial Plunger Pump Cylinder

According to some issues emerged in BY004-1type axial plunger pump cylinder, such as plunger die, plunger holes wear, leakage of port plate pairs and large cylinder body. By using the finite element, combined with relevant theory, the text discussed the influence of the BY004-1type cylinder deformation to Plunger movement, plunger holes wear, leakage of port plate pairs based on the simulation analysis of the cylinder, the stress and strain calculation, structural optimization.The working principle of the swash plate axial piston pump has been analyzed. For the above issues, this text started with the force analysis of the BY004-1type cylinder, and build the finite element model in ANSYS-Workbench based on a detailed study of wear feature representation of the friction pair, this text discussed the influence of the BY004-1type cylinder deformation to Plunger die and plunger holes wear at the light load, normal and heavy-load situations. The leakage formula was deduced when the gap in the port plate pairs is wedge-shaped caused by Cylinder end surface deformation, based on the gap is parallel slit. It is necessary to accurately assess the plunger pump volumetric efficiency.In a comprehensive analysis of the above issues, the simulation optimization analysis of the BY004-1type cylinder has been performed. In the analytical process, the thickness of the Plunger hole and the center of circle pitch radius of the cylinder plunger hole were selected as design parameters. Meanwhile, Cylinder volume, maximum equivalent stress of the Cylinder, Maximum radial deformation of the plunger hole and maximum axial deformation of the Cylinder end face were selected as goal parameters. The cylinder volume after optimization was reduced by16.16%, and met the original requirements which effectively optimized the cylinder structure, cost savings.