目前，工业机器人在各个领域应用广泛，对机器人手臂铸件的质量要求也随之提高。 本文根据机器人手臂的结构特征及技术要求，结合铁型覆砂铸造工艺特点，设计了机器人手臂铸件的铁型覆砂铸造工艺方案，并通过凝固模拟软件对工艺方案进行了优化。 结果表明，机器人手臂铸件的铁型覆砂铸造工艺优化方案可行，实现了铸件的稳定高效清洁生产，铸件产品质量稳定，合格率达 95% 以上，表面粗糙度 Ra 达到 12.5~25.0 μm 、尺寸精度为 CT7 级，降低了生产成本，可推广应用。

 Currently, industrial robots are widely used in various fields, and the quality requirements of robot arm castings are also increasing. Based on the structural characteristics and technical requirements of the robot arm and combined with the characteristics of the iron mold sand covering casting process, the iron mold sand covering casting process scheme of the robot arm casting was designed, which was then optimized by solidification simulation software. The results show that the optimization scheme of the iron mold sand covering casting process for robot arm castings is feasible, which allows stable, efficient and clean production of castings to be achieved. The quality of the casting product is stable, with the qualification rate reaching over 95%, the surface roughness reaching Ra 12.5~25.0 μm and the dimensional accuracy reaching CT7, which reduces the production cost and can be popularized and applied.