Prediction on milling distortion for aero-monolithic multi-frame parts

摘要

Because the multi-frame component has thin walls, variable wall thickness and a high reconciliation precision request, the prediction for its milling distortion is extremely difficult. In this study, the finite element model of the milling distortion analysis is established firstly for the multi-frame components, and the prediction analysis of the milling distortion under different milling conditions is carried out, by means of 3-D finite element simulation technology. Comparing the simulation results and the measurement ones of the milling distortion, the proposed model is modified and prediction method is proved to be effective. Software system is developed specially for the prediction of the milling distortion for aero-monolithic multi-frame components. By using of the software, a platform structure with 192 frames is analyzed and its milling distortion is predicted successfully.