ADDITIVE MANUFACTURING MACHINE COMPRISING A DEVICE FOR THE DISTRIBUTION OF POWDER ONTO A MOBILE SURFACE USING A SCREW DISTRIBUTOR

摘要

A powder bed fusion additive manufacturing machine (10) comprises: a manufacturing chamber (12), at least one mobile powder-receiving surface (28) and a manufacturing zone (20) situated inside the manufacturing chamber, a powder-spreading device (30), and at least one powder-distribution device (32) distributing powder over the mobile receiving surface. The distribution device comprises a buffer reservoir (40) connected to a powder supply (42), and a powder-distribution point (P1) beneath which a mobile receiving surface (28) moves, and the powder-distribution device comprises a screw-type metering device (44) connecting the buffer reservoir (40) and the powder-distribution point (P1) and enabling the generation of a continuous stream of powder from the buffer reservoir towards the powder-distribution point.