A thin wall micro-milling deformation prediction method: first, a thin wall micro-milling processing finite element simulation model is established on the basis of finite element simulation software, and a Johnson-Cook material model and a damage model are employed to describe material attributes of a processing material and a damage criterion, thus implementing a milling force prediction of a thin wall micro-milling processing process and verifying the accuracy of the model through experiments; then, a thin wall micro-milling processing deformation prediction model is established on the basis of a living/dead unit method, a milling force outputted by the thin wall micro-milling finite element simulation model is loaded into the thin wall micro-milling processing deformation prediction model, and finally, a processing deformation prediction of thin wall micro-milling is implemented. The present method implements, on the basis of finite element milling simulation, the accurate prediction of a thin wall element micro-milling deformation, provides a technical guidance in a thin wall element micro-milling process, increases the precision and efficiency of thin wall element micro-milling process, and provides actual application values.
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