Shape follow-up support deformation control method for selective laser melting forming of thin-walled part

Abstract

The invention relates to a shape follow-up support deformation control method for selective laser melting forming of a thin-walled part. On the basis of existing selective laser melting forming support adding, the stress deformation behavior of the large thin-walled structural part in the forming process is analyzed and predicted, according to the molded surface structural characteristics, a design method that different shape follow-up supports are added at different positions is adopted, the problems such as cracking and deformation at the different positions such as the bottom in the selective laser melting forming process are solved through the method of supporting structure shape follow-up adding, the stability in the forming process is effectively improved, and the reliability of thequality of the formed structure part is guaranteed.

Description

technical field [0001] The invention relates to a conformal support deformation control method for laser selective melting and forming of thin-walled parts, and belongs to the technical field of thin-walled parts forming. Background technique [0002] As my country's large-scale transport aircraft, advanced fighter aircraft, high thrust-to-weight ratio engines and other major national aerospace weapons and equipment projects have been successively established, many key structures have adopted a large number of complex cavity thin-walled components, and the traditional technology is used. The manufacturing cycle is long, which seriously hinders the model Moreover, in the face of the increasingly stringent performance requirements of aircraft, many new complex parts cannot be processed by traditional processes at all, so they cannot meet the performance or functional requirements of aircraft. [0003] Laser selective melting forming technology is an advanced manufacturing techn...

AI Technical Summary

Problems solved by technology

[0010] Aiming at the problems existing in the prior art, the present invention analyzes and predicts the stress-deformation behavior of large-scale thin-walled structural parts during the forming process on the basis of the support addition of the existing laser selective melting forming, and adds support structures along the shape Control cracking, deformation and other problems during the laser selective melting forming process at different positions such as the bottom, effectively improving the stability of the forming process and ensuring the reliability of the quality of the formed structural parts

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