A system and method for predicting and controlling the forming quality of additively manufactured parts

Abstract

The embodiment of the present invention discloses a system for predicting and controlling the forming quality of an additively manufactured part, including an additive manufacturing module, an image acquisition module, an image processing and feature extraction module, a prediction module and a process parameter adjustment module. The invention collects and processes images of molten pool, plume and spatter, and extracts various characteristic parameters of the three regions of molten pool, plume and spatter; uses LSTM network to predict the forming quality of the workpiece after n seconds; When the forming quality parameters of the predicted parts exceed the alarm value, adjust the process parameters in time and continue the subsequent processing; when the predicted forming quality parameters of the parts exceed the shutdown value, an alarm will be issued in time and the machine will be stopped, which improves the production of additive manufacturing parts. quality, reducing material loss. The embodiment of the present invention also discloses a method for predicting and controlling by using the above-mentioned system for predicting and controlling the forming quality of an additively manufactured part.

Description

Technical field[0001]The present invention relates to the field of monitoring and control technologies, relating to a forming quality prediction and control system and method for adding materials manufacturing.Background technique[0002]Supplement is the advanced manufacturing technology of various technologies such as information technology, new material technology and manufacturing technology. It is known as representative technology that is expected to generate "third industrial revolution", which is a large-scale manufacturing model to personalized manufacturing model. Leading technology. In the past 20 years, this technology has achieved rapid development, and has achieved extensive applications in the fields of aviation, aerospace, nuclear power, weapons, ships. However, the current additive manufacturing technology has problems with defects such as cracks, air holes, spheres, unfelt holes during processing, leading to the unstable quality of the parts, and improve production c...

AI Technical Summary

Problems solved by technology

However, the use of material reduction or remelting repair methods will lead to a decrease in production efficiency and have an impact on the overall quality of the workpiece

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