Multi-galvanometer rapid synchronous scanning device for 3D printing online defect detection

Abstract

The invention provides a multi-galvanometer rapid synchronous scanning device for 3D printing online defect detection, and relates to the technical field of additive manufacturing, and the device comprises an additive manufacturing processing and detection receiving shared light path system which realizes cooperative scanning of a processing light path and a detection receiving light path; a laser ultrasonic excitation light path system, used for generating laser ultrasound and ensuring that laser ultrasonic detection and processing breadth coincide and a detection focus and an additive manufacturing focus coincide; and a control system, used for realizing cooperative control and printing-detection-feedback control of the detection and additive manufacturing processes. According to the device, the problems of detection and quality control of complex structural parts manufactured by selective laser melting additive manufacturing can be solved, online detection key technologies such as cooperative control, galvanometer sharing and printing-detection-feedback control of an additive manufacturing technology and a detection technology are broken through, and technical support is provided for development of intelligent additive manufacturing equipment in the spaceflight field of China.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a multi-mirror fast synchronous scanning device for online defect detection in 3D printing. Background technique [0002] Aerospace products represented by space station cabin brackets need to meet the requirements of lightweight, high performance, and high quality. Traditional processing is difficult to achieve. Metal additive manufacturing is the core disruptive technology of advanced manufacturing and intelligent manufacturing. Research and development has brought about a new generation of transformative technological means. However, the reciprocating cycle characteristics of "point-by-point scanning / layer-by-layer accumulation" of metal additive manufacturing and the complex overall part structure have resulted in various special process defects that are different from traditional manufacturing, which has brought new challenges to the use of aerospace additive ...

AI Technical Summary

Problems solved by technology

However, the reciprocating cycle characteristics of "point-by-point scanning / layer-by-layer accumulation" of metal additive manufacturing and the complex overall part structure have resulted in various special process defects that are different from traditional manufacturing, which has brought new challenges to the use of aerospace additive manufacturing products. Huge challenges have come, and it is urgent to carry out research on online detection technology for additive manufacturing to ensure low porosity and high quality of additive manufacturing products and meet the service performance requirements of aerospace products

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