Research On Optimization Design Of Stripping Mechanism Of The Bulging Die For Shock Absorber

Shock absorber is a key component in automobile production,and its quality directly affects the safety of the vehicle and other ancillary performance.Therefore,in order to ensure the production accuracy of the shock absorber and its service life,it is very important to optimize the mold used in the production process of the shock absorber during the production process.Based on this reason,the finite element method,topology optimization technique,response surface model and genetic algorithm are used to optimize the structure of the key components of the shock absorber and bulging machine.The results can provide for a reference for designing machine tools in the future.The main research contents of this paper are as follows:(1)The defects of bulging mold of the vertical bulging machine are analyzed according to the actual production,and the specific improved method of the bulging mold is described.Meanwhile,the effectiveness of the bulging mold is enhanced through the new PLC control program and hydraulic system simulation.(2)After the improvement of the bulging mold,the structural part with the greatest change in mass is the column of the vertical bulging machine.ANSYS Workbench software was used to analyze the static and dynamic mechanical properties of the column,and the results of the parameters of the column are obtained.Meanwhile,the shortcomings can be found out.These results can provide the theoretical basis for the improving machine design.At the same time,based on the topology optimization theory,the column of the vertical bulging machine is optimized,and the conceptual model of the column is established according to the optimization result.(3)Some design variables of the column are determined,and through the center of the composite experimental design,the response surface model of the column is established based on kriging function.In the whole design process,the best structural parameters of the column are obtained by using the established response surface model and genetic algorithm for calculation.Then,compared with the original structure,the total mass of the column structure is improved by 6.39%.Integrated maximum deformation reduced by 0.03%.Meanwhile,the first-order natural frequency is also increased by 0.03%.And the harmonic response analysis and fatigue analysis of the improved column are carried out to ensure that the improved column structure has better optimization effect.