Abstract:

The aero-thin-walled components are characterized by the thinness and its variability of the wall and low rigidity, they are liable to distortion during the machining process, so it is difficult to guarantee their machining precision. In view of the fact, to predict and control effectively their machining distortion, calculations of the milling distortion were performed for the aerothinwalled components by the 3-D finite element method considering the milling forces, the clamping forces and the initial residual stress field, and the behaviors of the milling distortion were revealed. The predicted distortion behavior was verified by the milling test and the positive result was obtained. The study is helpful to the prediction and the control of the machining distortion for the thin-walled components.

Key words: cutting tool technology, finite element method, machining distortion, thin-walled component, milling force