Detection optimization system and method for laser near-net forming defects

Abstract

The invention, which belongs to the technical field of additive manufacturing, particularly provides a detection optimization system and method for laser near-net forming defects. The system comprisesa motion module with a tracking function, a graphic processing module, and a 3D printing parameter adjustment module. The motion module with the tracking function is used for dynamically acquiring asurface image of a laser processing area in real time; the graphic processing module is used for processing the surface image so as to realize accurate positioning and recognition of a defect area inthe machining process; and the 3D printing parameter adjusting module is used for adjusting processing parameters of 3D printing according to the data information and the processing position of the graphic processing module. The machine vision and image processing technology is adopted for defect detection; and compared with human eye detection, the defect detection process is rapider and more accurate. A laser tracker is used for accurately locating a laser action area, a camera tracks laser to perform accurate picture acquisition, defect information is automatically fed back, LENS technological parameters are effectively adjusted in a targeted mode, so that high-quality parts are generated.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and in particular relates to a detection and optimization system and method for laser near-net-shaping defects. Background technique [0002] Laser Near Net Shaping (LENS) is a new type of laser rapid prototyping manufacturing process, which is a kind of additive manufacturing. The principle is that the focused laser beam moves according to a preset path under control. While moving, the powder nozzle directly transports the metal powder to the molten pool formed by the laser spot on the solid substrate, making it from point to line, Solidify from line to surface in order to complete the printing work of a layer section. These layers are superimposed to create a near-net-shape component body. LENS technology can realize moldless manufacturing for small and medium-scale production parts, saving costs and shortening the production cycle. Especially for those parts with high perform...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem that 3D printing cannot carry out defect detection simultaneously in the prior art

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