Omnibearing multi-angle optimization method based on deformation prediction

Abstract

The invention provides an omni-directional multi-angle optimization method based on deformation prediction, and the method comprises the steps: building a blade milling finite element simulation model to predict the curved surface deformation when facing a curved surface thin-wall working condition, and taking an auxiliary support layout and milling cutting parameters as design variables based on a GA-SVR thin-wall blade to reduce the curved surface deformation. The maximum machining elastic deformation and the overall elastic deformation mean square error serve as the quality evaluation indexes of the auxiliary support layout; calculating quality evaluation indexes of the auxiliary support layout and generating a sample set, training the sample set to obtain an agent model of the evaluation indexes, predicting the maximum processing elastic deformation and the overall elastic deformation mean square error of the actual thin-wall blade under the auxiliary support layout through the agent model, and optimizing the process parameters to obtain the optimal processing elastic deformation of the thin-wall blade under the auxiliary support layout. And the elastic deformation is reduced in an iterative compensation mode. The method has the beneficial effects that the algorithm is optimized, the machining time is shortened, and the machining efficiency and the machining precision of the blade are improved.

Description

Technical field [0001] The invention involves the field of leaf -shaped optimization in the condition of curved thin walls, especially a comprehensive multi -angle optimization method based on deformation prediction. Background technique [0002] As an important part of the impeller of various mechanical equipment, the processing quality and processing accuracy of the leaves directly affect the overall performance and service life of the equipment. The electronic digital signal control milling is used as a high -precision, high -efficiency processing method. The precision forming of the leaves. However, as a typical complex curved thin -gun device, the blades are easily affected by the cutting force during milling and processing. This causes the actual cutting position of the tool during the milling process to deviate from the theoretical cutting position, which causes the processing accuracy of the leaves to not meet the standard, which affects the service performance of the equ...

AI Technical Summary

Problems solved by technology

However, these methods are time-consuming and complicated, and do not consider the influence of materials on the machining process

Moreover, there is still a lack of corresponding research on the auxiliary support for thin-walled blade airfoil milling.

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