2A12铝合金机油泵盖的铣削变形分析及控制策略

Milling deformation analysis and control strategy of oil pump cover made by 2A12 aluminum

针对薄壁零件铣削加工中的变形问题,基于UG、Hypermesh和ABAQUS软件,建立了2A12铝合金机油泵盖的有限元分析模型,进行了铣削变形有限元模拟和研究,获得了机油泵盖变形的基本规律。针对机油泵盖变形过大问题,对夹具进行了改进,改进后的模拟结果表明效果良好。进行实际加工实验,实验结果表明:有限元模拟得出的变形量趋势及位置和实测的大致上吻合,可以认为铣削力经验模型及铣削变形有限元模拟可靠,为进一步研究控制薄壁件加工变形方案提供了依据。

For the thin-walled components milling deformation problem, the finite element analysis model of 2A12 aluminum oil pump cover is established based on UG, Hypermesh and ABAQUS software in this article. By milling deformation finite element simulation and research, the machining deformation rules of oil pump cover is obtained. For the problem of large deformation, the fixture is improved. And the simula tion results show that the effect is good after improvement. Then make actual processing experiment, the experiment results show that the finite element simulation of deformation trend is in accordance with the measured roughly. So it can be thought that the milling force model and milling deformation finite element simulation is reliable. And the research provides good reference for the further study of controlling machining distortion of thin-wall components.