Machine and process for powder-based additive manufacturing

An additive manufacturing, powder technology, applied in the field of powder-based additive manufacturing, to achieve the effect of improving uniformity
CN104010750AActive Publication Date: 2014-08-27MICHELIN & CO CIE GEN DES ESTAB MICHELIN
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
MICHELIN & CO CIE GEN DES ESTAB MICHELIN
Publication Date
2014-08-27

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Abstract

The invention in particular relates to a machine (1) for additive manufacturing that frits or melts powder (2) using an energy beam (3) acting on a powder layer (23) in a working zone (4), said machine comprising a device for producing a layer of said powder, said device comprising: means (5) of storing the powder; means (6) for distributing the powder, which means is able to travel over the working zone in order to distribute the powder in a layer (23) having a final thickness (24) tailored to the additive manufacturing; feeding means (7) able to transfer the powder from the storage means (5) to the distributing means (6); and dosing means (8) able to control the amount of powder transferred from the storage means (5) to the distributing means (6), said machine being characterised in that: the storing means (5) are located above the working zone (4); the feeding means (7) are gravitational feeding means; and the feeding means (7) and the dosing means (8) are able to move with the distributing means (6).
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Description

technical field

[0001] The present invention relates to machines and methods for powder-based additive manufacturing by sintering or melting particles of said powders by using energy beams such as electromagnetic radiation (eg laser beams) or particle beams (eg electron beams).

[0002] More specifically, the present invention relates to apparatus and methods for layering (ie, preparing) a powder bed prior to sintering or melting the layer using an energy beam. Background technique

[0003] Document EP-1641580-B1 discloses in particular a layering device by laser sintering of powders (metal or ceramic). The plant comprises a feed tray which allows the powder to be stored and delivered in controlled quantities to a fluted drum which, on the one hand, enables During the process, the amount of powder is conveyed and distributed on the storage tray, on the other hand, the powder can be compacted by the rolling movement of the roller during the second pass. The powder is then s...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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