高吨位镁合金压铸机定模板减重设计的有限元分析

压铸机定模板是压铸机的重要零件，它在生产中变形程度的大小对生产过程尤其是所加工产品的精度具有重要影响。对某高吨位镁合金压铸机定模板减重前后的设计方案进行有限元分析，对比了两种设计方案的刚度值及应力场。依据有限元计算结果对设计方案进行了评估，并对加工过程提出了建议。从整个分析结果来看，减重孔对定模板的刚度有一定影响，但经减重处理后的定模板仍可以满足设计要求。

FEA of solid plate weight-reduction design of large-scale magnesium alloy die cast machine

Solid plate is an important part of die cast machine, and its deformation degree during manufacture has great influence on producing process, especially products' accuracy. In this paper, FEA on design schemes fore-and-aft weight-reduction of solid plate on some large-scale magnesium alloy die cast machine and compare between rigidity and stress distribution of the two design schemes are conducted. Then, suggestions on manufacture process are presented according to evaluations on design schemes after FEA. The entire analysis results indicate that lightening hole on the second design scheme have influence on regidity of solid plate, while the solid plate can still meet design requirements.