Constraints determine the constraints of the rack assembly based on the operating characteristics of the hot forging press. Due to the complex structure of the hot forging press frame assembly, its stress distribution, deformation and dynamic characteristics need to be solved by the finite element method. The stress-constrained hot forging press frame assembly is made of cast steel. The highest stress value in the finite element analysis results must be within the allowable stress value to ensure safety. Therefore, the rack needs to check its maximum stress value. The stiffness of the displacement constrained hot forging press frame assembly is an important performance index, which is directly related to the deformation size and machining accuracy of the hot forging press, and therefore must be strictly limited. Boundary constraints From structural design and process requirements, design variables should follow certain specifications. According to the specific conditions of the hot forging press, the constraints of the design variables are selected. Establishing the finite element calculation model The press frame assembly is a pre-tightening structure, which is formed by preloading the upper beam, the left frame, the right frame and the lower beam through the front and rear levers. Because there are bearing housings with crankshafts on the frame and large holes with a diameter of 1515, after the frame is pre-tightened, the holes may be crushed to a certain extent due to the pressure. According to the requirements of the technical department of a factory, the frame is now The component was subjected to three-dimensional finite element analysis to obtain a deformation amount of 1515. The left and right structures of the press frame assembly are basically symmetrical and subject to the central working load, so half of them can be analyzed. (Finish) WEISS MACHINERY CO., LTD. , https://www.weissmachinerys.com