基于UG的薄壁件夹紧变形有限元分析

Finite Element Analysis of Clamping Deformation of Thin-walled Parts Based on UG

在薄壁件的切削加工中,由于零件的壁厚较薄,零件自身的刚性差,制造过程中极易发生变形、失稳和振动等问题,使零件的加工精度降低,从而影响零件的加工质量。本研究以Titanium_Ti-6Al-4V薄壁零件为对象,在研究薄壁零件夹紧变形理论的基础上对该零件的夹紧变形问题进行分析,并应用UG软件进行有限元仿真,分析了心轴与零件内壁配合的过盈量和轴向载荷对零件的轴向位移变形及冯氏应力(Von Mises)的影响,确定合理的过盈量及轴向载荷,并根据仿真结果给实际生产以指导,从而得到较好的加工效果,对该类零件的实际加工有一定的指导和参考意义。

During the processing of thin-walled parts, unstability, vibration and distortion often occur as the wall is thin and the rigidity is poor, so the machining precision of parts is reduced, and the machining quality of parts is affected. This study takes Titanium_Ti-6 Al-4 V as the research object, analyzes its distortion problem and the effect of interference and axial load based on clamping deformation of thin-walled parts. UG software is used to carry out the finite element simulation and analyze effects of magnitude of interference of spindle and inner wall fitting and axial loading on the parts of the axial displacement deformation and stress of the inner wall parts and Feng stress（Von Mises）, to determine reasonable magnitude of interference and axial loading, and according to the simulation results to guide the practical production, in order to get the good machining effect, and give a certain guidance and reference to the actual processing of the parts.