Real-time monitoring method, device and system for selective laser melting

Abstract

The invention discloses a real-time monitoring method, device and system for selective laser melting. The method comprises the steps that A1, image extracting angular points are marked; S1, after laser scanning forming is completed on one layer, layer forming image information of a forming platform area is collected; A3, the layer forming image information is compared with designed layer image information, and the error value is calculated; and A4, the error value is judged, if the error value is smaller than a set value, forming of the next layer is carried out, and if the error value is larger than or equal to the set value, work is stopped. The device and system comprises an image collecting device and a controller. Layer forming image collecting and processing are achieved, and the work mode of the next step is determined according to the processing result. According to the real-time monitoring method, device and system, forming of each layer is monitored in real time, forming defects are avoided, and the rate of finished products is increased.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a real-time monitoring method, device and system for selective laser melting. Background technique [0002] The selective laser melting process is an advanced laser additive manufacturing technology developed based on the basic principle of prototype manufacturing technology. It uses high-energy laser beams to irradiate pre-coated metal powder materials, directly melts and solidifies them, and forms them. metalwork. It converts the solid 3D model file into an STL file through the computer for layered slicing, and forms a scanning path. The computer sends instructions to the machine according to the scanning path, and the materials are piled up and fused layer by layer, finally forming a three-dimensional solid part or prototype. There are many factors that affect the quality of the metal additive manufacturing equipment of the selective laser melting process durin...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of detecting the forming quality in the selective laser melting process, the present invention proposes a method and device for detecting forming images in real time. By detecting the forming images in real time and comparing them with the designed images, the quality of the formed products can be controlled and the improvement can be improved. Yield rate, reduce loss

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