SYSTEM FOR ONLINE REAL-TIME MONITORING OF METAL ADDITIVE MANUFACTURING BY MULTIPLE MONITORING DEVICES

摘要

A system for online real-time monitoring of metal additive manufacturing by multiple monitoring devices. The system comprises: a high-speed camera inspection module (6), which measures the three-dimensional contour precision of an additive manufacturing part and detects the contour of a molten pool; a visible spectrometer inspection module (3), which measures the deflection angle of laser; an infrared thermal imager inspection module (5), which measures the temperature of the molten pool; an approaching visible hyperspectral camera inspection module (7), which detects spatial information and spectral information of the molten pool and sputtering; an interference imaging spectrometer inspection module (4), which acquires a two-dimensional space image and one-dimensional spectral information of the additive manufacturing part; a stress-strain measurement module (18), which monitors stress-strain data of the additive manufacturing part; a laser ultrasonic inspection module (8), which cooperates with a rotary machining table to detect a surface defect and a near-surface defect of the additive manufacturing part; a computerized tomography module (14), which cooperates with the rotary machining table (1) to detect an internal defect and an internal geometric contour of the additive manufacturing part; a laser-induced breakdown spectroscopy inspection module (13), which determines the material composition and content of the additive manufacturing part; and a central processing unit (16), which finds a machining error and a metallurgical defect, and then feeds back same to a metal additive manufacturing machining end. By means of the invention, the quality of a finished product is improved.