Surface defect real-time detection device for additive manufacturing

Abstract

The invention relates to a real-time detection device for a surface defect of an additive manufacturing product. The device comprises an illumination module connected with a computer processing unit,a lens group, a sensor module, a transmission module and the computer processing unit, wherein the illumination module works during a lens group shooting process; the lens group comprises one or moreoptical lenses; the transmission module comprises a stepping motor, a screw rod and a corresponding control circuit, and is used for changing the height of the lens group, so that the lens group can always follow a manufacturing process of the additive manufacturing product; the computer processing unit is used for receiving images acquired by the lens group, fusing the acquired images, then judging a surface defect type and a position of the additive manufacturing product through a corresponding image processing algorithm, and recording. According to the real-time detection device provided bythe invention, a 360-degree surface image of the additive manufacturing product can be acquired at the same time, surface defects such as surface indentation, embossment and color change of the manufacturing product can be comprehensively detected in real time without dead corners in a high-accuracy and high-resolution way, and the detection speed of a system is improved.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a real-time detection device for surface defects used in additive manufacturing. Background technique [0002] The emergence of additive manufacturing technology is considered to be an epoch-making technological innovation in the field of machinery manufacturing industry in the 21st century, which has brought a strong impact and shock to modern society. Additive manufacturing technology combines the advantages of many high-tech technologies such as digital modeling technology, electromechanical control technology, information technology, material science and chemistry, and has many advantages compared with traditional mechanical manufacturing technology. [0003] Additive Manufacturing (AM) is a new technology for rapid free-formation and manufacturing of three-dimensional solid parts, also known as Rapid Prototyping (Rapid Prototyping), 3D Printing (3D Printing), ...

AI Technical Summary

Problems solved by technology

However, the focus of these tests is on the internal defects of additive products, such as its internal residual stress distribution, material porosity, etc., and there is still no suitable defect detection method for some additive products with relatively high surface requirements.

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