Additive and subtractive composite manufacturing device and method based on in-situ multi-laser regulation and control

A manufacturing method and technology for adding and subtracting materials, which are applied in the field of increasing materials manufacturing, can solve problems such as difficulty in reducing materials processing, and achieve the effect of significant strengthening effect, improving surface quality, and reducing processing difficulty.

Pending Publication Date: 2020-11-24
SOUTH CHINA UNIV OF TECH +1
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  • Abstract
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Problems solved by technology

[0003] Due to the rapid melting and solidification of the powder, the internal grains of the parts manufactured by the laser selective melting technology are finer and the dislocation density is higher than that of the traditional pr...

Method used

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  • Additive and subtractive composite manufacturing device and method based on in-situ multi-laser regulation and control
  • Additive and subtractive composite manufacturing device and method based on in-situ multi-laser regulation and control
  • Additive and subtractive composite manufacturing device and method based on in-situ multi-laser regulation and control

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Embodiment

[0048] Such as figure 2 , image 3 , Figure 4As shown, the present invention proposes a composite manufacturing device for adding and subtracting materials based on in-situ multi-laser regulation, including a pulsed laser optical path device, a continuous fiber laser optical path device, a cutting processing device, and a laser selective melting device; Position control, multi-wavelength laser material addition, subtraction and tool milling integrated collaborative forming, to achieve low-defect, high-precision, high-performance parts efficient, integrated additive and subtractive composite manufacturing.

[0049] Further, the pulsed laser optical path device includes a pulsed laser 1, a first collimator 2, a first scanning galvanometer 3 and a first f-θ mirror 18, and the laser light generated by the pulsed laser 1 passes through the first collimator 2 and then controlled by the first scanning galvanometer 3 and focused on the molding surface under the action of the first...

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Abstract

The invention discloses an additive and subtractive composite manufacturing device and method based on in-situ multi-laser regulation and control. The method comprises the following steps: carrying out data processing on a data model of a part; carrying out additive treatment, specifically, forming the part through a small-light-spot continuous laser beam SLM, and carrying out remelting and laserimpact strengthening on the surface of the formed part through a pulse laser beam; carrying out subtractive treatment, specifically, carrying out irradiation softening on the part to be machined through a large-light-spot continuous laser beam, and milling the part through a cutting tool device; switching the mode into an additive manufacturing mode, and continuing additive stacking forming of thenext portion of the part; and repeating the additive treatment step and the subtractive treatment step until forming machining of the whole part is completed. According to the device and the method,multi-laser in-situ regulation and control is utilized, multi-wavelength laser additive, subtractive and tool milling integrated collaborative forming is carried out, and efficient and integrated additive and subtractive composite manufacturing of the low-defect, high-precision and high-performance part is realized.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and specifically relates to an additive-subtractive composite manufacturing device and method based on in-situ multi-laser regulation. Background technique [0002] Selective laser melting (SLM) is an additive manufacturing technology that uses high-energy lasers to rapidly melt and solidify powders and build them up layer by layer. During the forming process, the Gaussian distribution of laser energy makes it easy for the laser to cause a large amount of semi-adhesive powder on the edge of the formed part during the process of melting the powder. These adhered powders not only affect the surface quality, but even become the source of failure of the part under load. . With the development of technology, due to the advantages of high energy and short action time, pulsed lasers can be used in the field of laser additive manufacturing. High-energy pulsed laser can be used to micro-c...

Claims

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Application Information

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IPC IPC(8): B22F3/105B22F3/24C21D10/00C22F3/00B23P23/04B33Y10/00B33Y30/00B33Y40/20
CPCB22F3/003B22F3/24C21D10/005C22F3/00B23P23/04B33Y10/00B33Y30/00B33Y40/20B22F2003/247Y02P10/25
Inventor 宋长辉马建立戴玉宏杨永强刘林青刘琼
Owner SOUTH CHINA UNIV OF TECH
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