A method for inspecting the quality of powder coating and additive manufacturing equipment
A powder-spreading and quality technology, applied in the field of additive manufacturing, can solve problems such as difficulty in ensuring powder-spreading accuracy and parts damage, and achieve the effects of efficient powder-spreading inspection work, simple equipment structure, and ensuring powder-spreading accuracy.
Active Publication Date: 2018-09-25
XIAN BRIGHT ADDTIVE TECH CO LTD
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Problems solved by technology
[0005] The purpose of the present invention is to provide a method for inspecting the quality of powder spreading, which detects the quality of powder spreading after each powder spreading is completed, and solves the problem that the existing powder spreading method does not inspect the effect of powder spreading, which easily causes damage to parts and is difficult to guarantee The problem of powder spreading accuracy
Method used
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[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the present invention is not limited to these embodiments.
[0030] Apparatus used in the method of the present invention such as figure 1 , 2 As shown, an LED light 6 is installed on the two inner walls of the forming cabin 8 of the SLM equipment perpendicular to the powder spreading direction, and a camera 7 is installed above the forming area 3, and both the LED light 6 and the camera 7 are connected to the computer 9 that controls the forming .
[0031] The method of inspecting the powder spreading quality through this equipment is: each time the powder spreading is completed, the computer 9 controls two LED lights 6 to turn on separately one after another to illuminate the forming area respectively, and the camera 7 takes a picture of the forming area 3 when each LED light is turned on , two powdering images are obtained in t...
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The invention discloses a method for inspecting the quality of powder spreading: after a single layer of powder is laid by a powder spreading device, a light source is used to irradiate the forming area separately, and two shots are taken successively by a photographing device to obtain two powder spreading images; Synthesize a powdered image; judge the overall gray level of the synthesized image. If the overall gray level is consistent, the powdered image is successful. If not, use the gray threshold segmentation method to process the synthesized image, and mark the area contained in the inner contour boundary of the image. is a suspected defect area, and judge whether the powder coating is successful according to its gray value. The invention also discloses equipment for inspecting the quality of powder spreading, including light sources symmetrically arranged on both sides of the forming chamber perpendicular to the powder spreading direction and a photographing device above the forming area, both of which are connected to a computer. The invention implements the function of checking the powder spreading quality on the additive manufacturing equipment, and respreading the powder when the powder spreading does not meet the requirements, and can also automatically analyze the cause of the powder spreading failure.
Description
technical field [0001] The invention belongs to the technical field of additive manufacturing, and in particular relates to a method for inspecting the quality of powder coating and additive manufacturing equipment. Background technique [0002] As an additive manufacturing technology based on powder spreading method ---- SLM (Selective Laser Melting) technology is a technology that uses metal powder to be completely melted under the heat of the laser beam, and then formed after cooling and solidification. This technology can quickly , Directly and accurately transform design ideas into physical models with certain functions. Compared with traditional processing methods, SLM can shorten the product design and manufacturing cycle, enhance the competitiveness of enterprises, enhance the profitability of enterprises, and establish a new product development model for industrial product designers and developers. [0003] The powder spreading device of the existing SLM equipment ...
Claims
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IPC IPC(8): B22F3/105G01N21/95B33Y10/00B33Y30/00
CPCB33Y10/00B33Y30/00G01N21/95B22F10/00B22F12/90B22F10/37B22F10/28G01N21/8422G01N21/8851G06T7/0004G01N2021/8887G06T2207/10016G06T2207/10152B33Y50/02B29C64/393B29C64/386B29C64/153Y02P10/25B22F10/14B22F10/16B22F10/80B33Y50/00B22F3/105
Inventor 杨东辉李洋
Owner XIAN BRIGHT ADDTIVE TECH CO LTD