Multi-objective Optimization of Clamping Unit of a 4000kN Squeeze Casting Machine Based on Coordination Curve Method and Hierarchical Sequence Method
In order to improve the motion and mechanical performance of the clamping unit of squeezing casting equip-ment,a multi-objective optimization method was proposed based on the Coordination Curve Method and Layered Sequential Method.Firstly,the operational characteristics of the curved lever-type die-closing mechanism in squeezing casting equipment were analyzed,and a mathematical optimization model was constructed.Subsequently,the harmoni-ous correlation between stroke ratio and force ratio was established,and the tolerance values were assigned for optimi-zation objectives.The penalty function algorithm was used to optimize the multi-scheme optimization of the targets such as force increase ratio,stroke ratio,speed ratio and member mass sum of the clamping unit,and the most suitable optimization scheme was selected.ADAMS software was leveraged for the construction of a virtual prototype model,enabling precise simulation and validation of motion.Finally,the on-site experimental platform was established for the evaluation of motion characteristics and mechanical properties,providing experimental validation for the mathematical model and simulation results.The results reveal a notable 14.4%increase in force ratio,a 6.9%enhancement in stroke ratio,and a marginal reduction in the total mass of rods compared to the pre-optimization state.The speed and accelera-tion performance of the moving plate are greatly improved.
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