Real-time monitoring method, device and system for selective laser melting

A technology of selective laser melting and real-time monitoring, applied in the field of additive manufacturing, to avoid forming defects and improve yield

Active Publication Date: 2019-01-29
厦门五星珑科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem of detecting the forming quality in the selective laser melting process, the present invention proposes a method and device for detecting forming images in real time.

Method used

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  • Real-time monitoring method, device and system for selective laser melting
  • Real-time monitoring method, device and system for selective laser melting

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Embodiment Construction

[0048] A real-time monitoring method for selective laser melting of the present invention comprises the following steps:

[0049] A1. The corner points of the calibration image are extracted to obtain the calibration parameters on the calibration board of different viewing angles, which are used to convert the molding image information into the actual data of the molding size;

[0050] A2. After the laser scans and forms a layer, collect the forming image information of the forming platform area;

[0051] A3, comparing the forming image information with the design image information, and calculating the error value;

[0052] A4. Judging the error value, if the error value is less than the set value, continue to form the next layer, and if the error value is greater than or equal to the set value, stop working.

[0053] Place the calibration board on different positions of the printing substrate, the image acquisition device acquires each corner point on the calibration board f...

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Abstract

The invention discloses a real-time monitoring method, device and system for selective laser melting. The method comprises the steps that A1, image extracting angular points are marked; S1, after laser scanning forming is completed on one layer, layer forming image information of a forming platform area is collected; A3, the layer forming image information is compared with designed layer image information, and the error value is calculated; and A4, the error value is judged, if the error value is smaller than a set value, forming of the next layer is carried out, and if the error value is larger than or equal to the set value, work is stopped. The device and system comprises an image collecting device and a controller. Layer forming image collecting and processing are achieved, and the work mode of the next step is determined according to the processing result. According to the real-time monitoring method, device and system, forming of each layer is monitored in real time, forming defects are avoided, and the rate of finished products is increased.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a real-time monitoring method, device and system for selective laser melting. Background technique [0002] The selective laser melting process is an advanced laser additive manufacturing technology developed based on the basic principle of prototype manufacturing technology. It uses high-energy laser beams to irradiate pre-coated metal powder materials, directly melts and solidifies them, and forms them. metalwork. It converts the solid 3D model file into an STL file through the computer for layered slicing, and forms a scanning path. The computer sends instructions to the machine according to the scanning path, and the materials are piled up and fused layer by layer, finally forming a three-dimensional solid part or prototype. There are many factors that affect the quality of the metal additive manufacturing equipment of the selective laser melting process durin...

Claims

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Application Information

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IPC IPC(8): B22F3/105B33Y10/00B33Y30/00B33Y50/02
CPCB33Y10/00B33Y30/00B33Y50/02B22F10/00B22F12/90B22F10/31B22F10/28B22F12/00Y02P10/25
Inventor 郑俊张勇麻云德黄理阳丁清伟丁培强姬小康
Owner 厦门五星珑科技有限公司
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