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

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

Active Publication Date: 2021-04-23
厦门五星珑科技有限公司
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  • Abstract
  • Description
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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. By detecting the forming images in real time and comparing them with the designed images, the quality of the formed products can be controlled and the improvement can be improved. Yield rate, reduce loss

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  • A real-time monitoring method, device and system for selective laser melting
  • A 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 includes A1, extracting corner points from the calibration image; A2, collecting layer forming image information of the forming platform area after the laser scans and forms a layer ; A3. Comparing the layer forming image information with the design layer image information, and calculating the error value; A4, judging the error value, if the error value is less than the set value, continue to form the next layer, if the error value If it is greater than or equal to the set value, it will stop working. The device and system include an image acquisition device and a controller to realize layer forming image acquisition and processing, and determine the next working mode according to the processing results. The invention monitors the molding of each layer in real time to avoid molding defects and improve the rate of finished products.

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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Patent Type & Authority Patents(China)
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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