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Method and device for flexibly spreading metal powder for selective laser melting additive manufacturing

A selective laser melting and additive manufacturing technology, applied in the field of additive manufacturing, can solve problems such as easy plastic deformation, and achieve the effects of less powder coating, long service life and simple structure

Active Publication Date: 2015-02-04
苏州科弗曼机械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the repeated deformation of the tooth-shaped flexible powder spreading scraper during the working process, and the thermal action of the powder bed or the hard protrusions in contact with it during the powder spreading process, it is very easy to undergo plastic deformation, so it must be replaced every once in a while. Toothed flexible powder spreading scraper

Method used

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  • Method and device for flexibly spreading metal powder for selective laser melting additive manufacturing
  • Method and device for flexibly spreading metal powder for selective laser melting additive manufacturing
  • Method and device for flexibly spreading metal powder for selective laser melting additive manufacturing

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Effect test

Embodiment 1

[0026] see figure 2 , which is a schematic diagram of the selective laser melting additive manufacturing of the first embodiment. The selective laser melting additive manufacturing device of this embodiment includes a forming cylinder piston X and a material cylinder piston Y arranged side by side, and a metal powder for selective laser melting additive manufacturing located above the forming cylinder piston X and material cylinder piston Y is flexibly spread Device P. The metal powder is laid on the upper surface of the forming cylinder piston X and the material cylinder piston Y, and is paved by the metal powder flexible spreading device P for the selective laser melting additive manufacturing.

[0027] Please also see image 3 with Figure 4 , image 3 It is the A-A cross-sectional view of the metal powder flexible spreading device for selective laser melting additive manufacturing, Figure 4 It is the B-B cross-sectional view of the metal powder flexible spreading de...

Embodiment 2

[0038] see Figure 7 , which is a schematic diagram of the selective laser melting additive manufacturing of the second embodiment. A metal powder flexible spreading device P for selective laser melting additive manufacturing is installed on both sides of the powder hopper D to form a powder hopper-type flexible powder spreading device E. The structure of the metal powder flexible spreading device P for selective laser melting additive manufacturing in this embodiment is the same as that in Embodiment 1.

[0039] The powder coating process of the selective laser melting additive manufacturing device of the present embodiment is as follows:

[0040] Initially, the powder hopper-type flexible powder spreading device E is located on the side of the forming cylinder piston X. Before the powder hopper-type flexible powder spreading device E moves, the forming cylinder piston X descends the distance of 1 powder layer, and then the powder hopper-type flexible powder spreading device...

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Abstract

The invention discloses a method and device for flexibly spreading metal powder for selective laser melting additive manufacturing. When a plurality of powder spreading teeth with lower ends being leveled to one another move on a powder spreading plane, the metal powder is flatly laid by the powder spreading teeth, and when the powder spreading process encounters a hard projection, the powder spreading teeth can be automatically, reasonably and stably adjusted by virtue of gravity and magnetic force. The device for flexibly spreading the metal powder and realizing the method comprises a fixed box as well as a magnetic absorption plate, a powder spreading tooth unit and a return pressure block, which are arranged in the fixed box, the magnetic absorption plate is fixed in the fixed box, powder spreading teeth units are adsorbed on the magnetic absorption plate by virtue of the magnetic force, and the return pressure block is carried by the powder spreading teeth units. The method is ingenious in principle and convenient and easy to implement; the device has the advantages of simple structure, long service life, less powder spreading trace, precision for avoiding barriers and the like.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a method and device for flexible spreading of metal powder for selective laser melting additive manufacturing. Background technique [0002] With the development of science and technology, there are various methods for rapid prototyping of metal parts, among which selective laser melting is a commonly used rapid prototyping method. The forming process of selective laser melting is as follows: the powder spreading device spreads a layer of metal powder on the forming cylinder, the laser beam is controlled by the computer, and according to the shape information of the formed part interface, the powder is selectively scanned to make the powder in the scanning area stick Knot or melt to obtain the single-layer shape of the formed part; then the forming cylinder descends a layer thick distance, the powder spreading device re-spreads powder, and continues to form the nex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F3/105
CPCY02P10/25
Inventor 吴伟辉杨永强
Owner 苏州科弗曼机械有限公司
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