大型卧式压铸机中板的结构轻量化研究

摘要

为了实现压铸机的高性能、低成本制造，以拓扑结构优化方法为理论依据，结合有限元分析技术，针对大型压铸机的中板进行了轻量化研究，建立了以中板模架装配面的厚度为设计变量的有限元分析模型。并对不同装配面厚度的中板进行了拓扑结构优化，通过对优化后模型的变形量、材料节省量和应力值的对比分析，确定出合理的装配面厚度值。最后获得了优化后的中板结构，其在满足工况要求的前提下质量减轻了26％。研究结果表明，运用拓扑优化的思想对压铸机进行结构优化设计，可以在满足工况的前提下实现压铸机的轻量化，从而有效地降低压铸机的制造成本。%In order to realize high performance,low manufacture cost for die-casting machines,by adopting topology optimiza-tion concepts as theoretical basis,combined with finite element analysis technique,the lightweight research had been done aiming at the middle plate of the die-casting machines,and the finite element models with the mating faces thickness of formwork on middle plate as design variables were set up. The topology optimization on middle plates which with different mating faces thickness was done and the reasonable mating faces thickness was ascertained,through contrasting the deformation,material saving and stress value of models after topology optimization. Finally the structure of middle plate after optimization was obtained,which reduced the weight for 26%on premises of satisfied the working conditions. Research result shows that the structure optimization design of die-casting ma-chine with topology concepts can realize the lightweight in the case of satisfying working conditions,thus reduce the manufacturing cost of die-casting machines effectively.