Research on Mechanical Characteristics and Optimization of Important Parts of Hydraulic Press Based on Finite Element in Slow Loading Condition

The mechanical properties of the main hydraulic cylinder, slider, and piston rod of hydraulic impact the overall performance in hydraulic press slow compression process. In this paper, a three beam four-column hydraulic press was regarded as the research object, the working principle of hydraulic press and the stress characteristics of important components of hydraulic press was analyzed, the mechanics model was set up, and thus established the optimization scheme of slider and piston rod; the finite element model of the important components of the hydraulic press was set up by using ANSYS software. The results show that the maximum pressure of the main hydraulic cylinder is 36.0032 MPa in the maximum liquid stress value 25 MPa;when the piston rod and the slider work at the maximum nominal force of 1000KN, the maximum stress occurs at the joint, and the value is 55.4125MPa. After optimization, the maximum stress value is 48.9255MPa, which effectively reduces the risk of stress. This result provides the basis for the design and application of the hydraulic press.