Online detecting and optimizing system for selective laser melting forming defect

A laser selective melting and defect technology, applied in the field of additive manufacturing, can solve the problems of inability to meet online inspection requirements, large identification errors, etc., and achieve the effects of high surface quality, guaranteed accuracy, and high mechanical properties

Active Publication Date: 2017-06-23
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

The shortcomings of the above three detection methods are that the defects of parts are identified by human eye

Method used

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  • Online detecting and optimizing system for selective laser melting forming defect
  • Online detecting and optimizing system for selective laser melting forming defect

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Embodiment Construction

[0015] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0016] refer to figure 1 , figure 2 , an online detection and optimization system for laser selective melting forming defects, characterized in that it includes a laser selective melting manufacturing platform, an image acquisition module and a process processing module, wherein,

[0017] The selective laser melting manufacturing platform includes a supporting base plate, a forming device and...

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Abstract

The invention belongs to the technical field of additive manufacturing and discloses an online detecting and optimizing system for a selective laser melting forming defect. The online detecting and optimizing system comprises a selective laser melting manufacturing platform, an image acquisition module and a processing module; the selective laser melting manufacturing platform comprises a supporting baseplate, a forming device and a laser scanning device; the image acquisition module comprises a three-axis motion platform and a CCD camera; and the processing module comprises an image processing module and an automatic process parameter adjusting module, and the image processing module comprises an image pre-processing module, an image threshold segmentation module, a neural network identifying and counting module and the automatic process parameter adjusting module. By using the online detecting and optimizing system, the surface defect condition of every layer of a part in a selective laser melting manufacturing process can be rapidly detected on line by using a machine vision technology and a digital image processing technology, and no human eye detection limitation exists, so that the accuracy of every defect detection is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and more specifically relates to an online detection and optimization system for defects in laser selective melting and forming. Background technique [0002] Selective laser melting (SLM) technology is a new type of laser rapid prototyping manufacturing process. This technology uses high-energy laser beams to melt metal powders and accumulate them layer by layer to directly manufacture high-performance complex metal parts. SLM technology breaks through the traditional ideas of deformation forming and removal forming in traditional manufacturing processes, and effectively solves the processing problems that cannot be completed by traditional processing technologies. It is especially suitable for those with special-shaped complex structures that cannot be manufactured by traditional processes such as forging, casting, and welding. Parts manufacturing does not require any fixtures an...

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Application Information

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IPC IPC(8): B22F3/105B33Y30/00B33Y50/02
CPCG01N21/8851B22F3/003B33Y30/00B33Y50/02G01N2021/8887B22F10/00B22F12/30B22F12/90B22F10/28B22F10/38B22F10/30Y02P10/25
Inventor 文世峰胡辉魏青松季宪泰周燕吴雪良王倩史玉升
Owner HUAZHONG UNIV OF SCI & TECH
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