针对大型镗铣数控机床滑枕的实际生产情况,对该铸件进行了砂型铸造的工艺设计。利用Anycasting软件对铸造工艺进行数值模拟仿真分析,并根据分析结果进行了工艺改进。结果表明,改进提出的底反雨淋式浇注系统与冷铁的激冷作用可以明显改善铸件的生产质量。研究结论对于实际生产具有重要指导意义。 According to the actual production situation of the ram of large boring and milling CNC machine tools, the casting process design of the sand casting was carried out. Anycasting software was used to simulate the casting process, and the process was improved according to the analysis results. The results show that the improvement of the chilled effect of the bottom-up rain gating system and chilled iron can obviously improve the quality of castings. The conclusions of the study have important guiding significance for actual production.