Research And Application Of Hybrid Bearing Under High Frequency Dynamic Load

Based on the research background of the toggle type press with high speed and ultra-precision, hydrostatic bearing has been researched in the application of the press. The press is a typical stamping equipment, which working load is discontinuous, namely the high frequency dynamic load. By working under this condition, the movement precision of the crankshaft transmission mechanism can not be guaranteed. Therefore, it is of great significance to improve the crankshaft transmission parts.Firstly, the movement principle and the working principle of the high-speed precision press have been analyzed, and the overall scheme design and the important part of the press was introduced in detail. What’s more, the working temperature of different parts have been analyzed through the experiment, and the working temperature have been recorded under different speed conditions. Then the hydrostatic bearing’s theoretical knowledge and numerical theory of computational fluid dynamics was introduced. Based on CFD, applying the 3D formation software SolidWorks, it makes a 3-D structural design for the four-chamber Hydrostatic bearing. Based on above, this paper focusing on the analysis of the relationship between the hydrostatic bearing’s properties and the parameters, made further analysis of the influence that spindle speed, input pressure and oil film thickness on the hybrid bearing’s load carrying characteristics.Through the research of the high-speed precision press, the experiment was given to demonstrate the press run in good condition and the actual working temperature are within the normal range. In addition, based on the CFD technology, three dimensional numerical of hydrostatic bearing has been carried out to get the color map of pressure field and temperature field of the hydrostatic bearing. The calculation results can effectively reflect the flow state of the bearing inner. Research results provide theoretical basis for the experimental study, and also provide a reference for the application of hydrostatic bearing under high frequency dynamic load.