为了实现对薄壁框架零件较高精度的铣削加工,通过基于SHELL单元所组成的有限元模型,在充分提高分析效率的基础上,分析了落刀位置、零件几何尺寸以及切削用量在加工过程中对零件变形的影响,最终对零件的不用切削参数下的变形量进行了分析。最终可以得出结论:采用基于SHELL单元的有限元模型在提高分析效率的基础上,可以对薄壁件的加工过程进行较为系统的优化最终以达到提高薄壁件加工精度和加工效率的目的。 In order to realize the high-precision milling of the thin-walled frame parts, based on the finite element model composed of SHELL units, on the basis of fully improving the analysis efficiency, the position of the cutter, the geometry of the part and the cutting amount are analyzed The impact of the deformation of the part, the final deformation of the part without cutting parameters under the analysis. Finally, it can be concluded that the finite element model based on SHELL unit can be used to optimize the processing of thin-walled parts to improve the processing accuracy and processing efficiency of thin-walled parts.