A Mechanical Laser Selective Melting Automatic Reversing Inclined Powder Spreading Device and Method

Abstract

The invention discloses a mechanical laser selective melting automatic reversing inclined powder spreading device and method; The stucco returning trough and the second powder recovery cylinder are arranged in sequence along the length direction of the forming platform; a guide rail is symmetrically arranged above the forming platform to provide guidance, support and positioning for the plastering; when the plastering is driven by the motion mechanism, the plastering can be Along the track of the guide rail, it reciprocates above the first powder recovery cylinder, the first plastering reverting trough, the forming cylinder, the powder material cylinder, the second plastering reverting trough and the second powder recycling cylinder. The device not only retains the advantages of the current general vertical powder coating uniformity and high powder coating accuracy, but also greatly reduces the phenomenon of powder springing that often occurs in the latter; the inclined powder coating method can make the powder coating layer more accurate Uniform and dense, while also increasing the service life of the elastic steel sheet.

Description

technical field [0001] The invention relates to a powder spreading mechanism used in laser selective melting molding equipment, in particular to a mechanical laser selective melting automatic reversing inclined powder spreading device and method. Background technique [0002] The laser selective melting molding process is a layer-by-layer processing process. The powder spreading device evenly spreads a layer of metal powder in the molding area, and scans the cross-sectional area of ​​the molding part by laser to melt and solidify the powder on the cross-section of the previous layer. Then the forming plane is lowered to a certain height and the process of powder spreading and laser scanning is repeated, and the function of forming three-dimensional metal parts layer by layer is realized. During the processing, the powder spreading quality of the powder spreading device greatly affects the final molding effect. [0003] At present, the common powder spreading methods in lase...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the limitations of the above several powder spreading methods, and provide a mechanical laser selective area melting and automatic reversing inclined powder spreading device and method for better paving and compacting powder in the powder spreading process; It is simple and has a long service life, which overcomes the shortcomings of the existing technology that is prone to powder popping during the powder spreading process

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