| 摘要 |
<p>The invention relates in particular to a machine (1) for additive manufacturing by sintering or melting powder (2) using an energy beam (3) acting on a layer of powder (23) in a working zone (41, 42), wherein said machine comprises a device for layering said powder, said device comprising: means (6) for distributing the powder which are capable of travelling over the working zone in order to distribute the powder in a layer (23) having a final thickness (24) suitable for additive manufacturing, feeding means (71) capable of transferring the powder by gravity to the distributing means, metering means (81, 82; 811, 812) capable of controlling the amount of powder transferred to the distributing means, in which the feeding means and the metering means are movable with the distributing means, said machine being characterized in that: the machine comprises two separate working zones (41, 42), the machine comprises two separate working trays (601, 602) that are able to move independently of one another, each of the two working trays is associated with only one of the two working zones, the layering device comprises a movable carriage (111; 111') carrying the feeding means, the metering means and the distributing means, said movable carriage being common to the two working zones, the machine comprises a central waiting zone (43) located between the two working zones (41, 42), said central waiting zone being capable of receiving the movable carriage of the layering device, and the layering device is configured approximately symmetrically in order to be capable of travelling over each working zone in the direction of the central waiting zone during a layering operation.</p> |
