Laser fast forming detection system and method for powder laying evenness

Abstract

The invention relates to a laser fast forming detection system and method for powder laying evenness and belongs to the technical field of laser fast forming powder laying detection. The laser fast forming detection system and method for powder laying evenness are provided and can monitor whether powder is laid flatly or not in real time and effectively improve the forming quality. According to the adopted technical scheme, a powder laying device, a powder supplying cylinder, a forming cylinder and a material collecting cylinder are arranged in a forming cavity; a laser device and an image collecting device are arranged on the top of the forming cavity; light supplementing lamps are arranged on the two sides of the forming cavity; and the laser device, the image collecting device and the light supplementing lamps are connected with the control system. The laser fast forming detection system and method for powder laying evenness can be widely applied to powder laying evenness detection for laser fast forming.

Description

technical field [0001] The invention relates to a laser rapid prototyping powder spreading uniformity detection system and a detection method, belonging to the technical field of laser rapid prototyping powder paving detection. Background technique [0002] 3D printing (additive manufacturing) technology is an emerging technology that is rapidly developing in the manufacturing industry, and it is called "manufacturing technology with industrial revolution significance". It is a manufacturing technology based on the principle of discrete and stacking. It discretizes the three-dimensional computer-aided design (CAD) model of the part in a certain way, and becomes a machinable discrete surface, discrete line and discrete point, and then uses physical or chemical means. Stack these discrete faces, segments, and points into a part shape. 3D printing technology can transform the designed 3D CAD model into parts with certain structure and function through superposition forming met...

AI Technical Summary

Problems solved by technology

If the powder coating is uneven and uneven, defects will occur inside the part during the laser sintering forming process, the forming accuracy will decrease, and even the forming will not be possible.

At present, it is difficult to monitor the uniformity of powder spreading in the forming process of SLS and SLM. It can only be observed manually, which is time-consuming and laborious, and it is also difficult to track and observe in real time.

At the same time, it is difficult to measure the outline size of each sintered layer forming part, and the printing accuracy cannot be guaranteed

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