以某机床床身铸件为研究对象,通过Procast铸造仿真软件对床身铸造应力进行仿真,得到了床身铸造过程中不同时刻的温度场、流场以及铸造落砂后应力场。分析温度场及残余应力场分布规律可以从理论上对现有的铸造工艺进行评价。结果表明,铸造过程中床身产生了大量的残余应力,残余应力分布具有一定的规律。 The casting of a machine tool bed is taken as the research object, the casting stress of the bed is simulated by Procast casting simulation software, and the temperature field, flow field and the post-sand casting stress field of the bed are obtained. Analysis of the distribution of temperature and residual stress field can theoretically evaluate the existing casting process. The results show that a large amount of residual stress is produced in the bed during casting, and the residual stress distribution has a certain regularity.