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- W4367186603 abstract "Abstract Integral blisk blades are typical complex curved structures with small thickness, low stiffness, and complex boundaries. Due to the high material removal rate during the machining process, they are prone to force induced deformation, resulting in significant machining errors. This seriously contradicts the requirements for high design accuracy and surface accuracy in the aerospace industry. Therefore, accurately predicting the distribution pattern of deformation caused by dynamic milling forces during the machining process and proposing reasonable error compensation strategies are urgent issues to be solved in the manufacturing of integral blisk blade. Firstly, this paper establishes a dual flexible force induced deformation calculation model for tool-workpiece coupling based on the analytical-finite element method, and obtains the deformation distribution law of the integral blisk blade machining process according to the principle of static equivalence. Then, based on the finite element deformation prediction model of blades, the selection of blade milling processing methods and parameters was completed with the goal of minimizing machining deformation. Finally, based on the mirror image compensation theory, a reverse reconstruction geometric modelling compensation method is proposed, which uses the blade deformation compensation calculated multiple times to reconstruct the blade contour model, and uses the tool path program containing the deformation error compensation amount is regenerated. The prediction model of blade deformation distribution and the proposed compensation strategy of reverse reconstruction geometric modeling are verified by the milling experiment and profile accuracy measurement experiment of a certain aeroengine integral blisk blade. The results showed that the predicted results were in good agreement with the experimental results, with an average error of 7.96%; The new compensation strategy proposed in this article can significantly reduce the cutting error generated during the machining process and control the error within the designed tolerance range. This study provides theoretical basis and technical support for the large-scale application of virtual digital manufacturing technology to control the deformation of complex thin-walled workpiece during milling in the future." @default.
- W4367186603 created "2023-04-28" @default.
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- W4367186603 date "2023-04-28" @default.
- W4367186603 modified "2023-10-16" @default.
- W4367186603 title "Research on Prediction and Compensation Strategy of Milling Deformation Error of Aitanium Alloy Integral Blisk Blade" @default.
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- W4367186603 doi "https://doi.org/10.21203/rs.3.rs-2853050/v1" @default.
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