关键词: 薄壁深腔零件, 有限元法, 铣削加工, 加工误差, 仿真

Abstract: Due to the side walls of thin-walled deep cavity components could easily deform during the milling process,which seriously affected the machining accuracy,a simulation algorithm of milling errors based on Finite Element Method (FEM) was proposed.Both the deflection of workpiece/tool system and the springback deformation of workpiece were taken into account,the continuous trajectory of cutter edge element was generated and the material was removed based on hexahedral mapping algorithm of points.The continuous process,the milling error of arbitrary point on the finished surface and the morphology of finished surface were obtained.A typical thin-walled deep cavity opening box body structure was taken as the simulation object to verify the veracity of the proposed simulation method by experiment.

Key words: thin-walled deep cavity parts, finite element method, milling maching, machining error, simulation