在数控火焰切割机主动升降机构的设计初期引入结构轻量化的思想,建立了主动升降机构的三维模型和有限元模型,利用ANSYS Workbench分析了简化后模型的前6阶模态,并对该机构进行了结构形状优化,不仅减轻了机构的质量还提高了机构的固有频率。该研究为升降机构及类似机构的设计确定了分析方法并提供了理论依据。 The idea of ​​lightweight structure was introduced at the beginning of the design of active lifting mechanism of NC flame cutting machine. The 3D model and finite element model of active lifting mechanism were established. The first 6 modes of the simplified model were analyzed by ANSYS Workbench. Structural shape optimization was performed, which not only reduced the quality of the mechanism but also increased the natural frequency of the mechanism. The study identified analytical methods and provided theoretical evidence for the design of lifting mechanisms and similar institutions.