US 12,246,396 B2
Additive manufacturing apparatus and machining head
Yuji Nojiri, Tokyo (JP); Kazuya Horio, Tokyo (JP); and Satoshi Hattori, Tokyo (JP)
Assigned to MITSUBISHI ELECTRIC CORPORATION, Tokyo (JP)
Appl. No. 18/721,893
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Mar. 11, 2022, PCT No. PCT/JP2022/011007
§ 371(c)(1), (2) Date Jun. 20, 2024,
PCT Pub. No. WO2023/170950, PCT Pub. Date Sep. 14, 2023.
Prior Publication US 2024/0416455 A1, Dec. 19, 2024
Int. Cl. B23K 26/342 (2014.01); B23K 26/14 (2014.01); B23K 26/146 (2014.01); B33Y 30/00 (2015.01)
CPC B23K 26/342 (2015.10) [B23K 26/1462 (2015.10); B33Y 30/00 (2014.12)] 11 Claims
OG exemplary drawing
 
1. An additive manufacturing apparatus comprising:
a wire nozzle to feed a wirelike material onto a workpiece; and
a machining head to irradiate the material fed onto the workpiece with a laser beam, and jet shielding gas from a supply source of the shielding gas, wherein
the machining head includes:
a head body including a first pipeline and a gas supply port, the first pipeline having a cylindrical shape and extending in a traveling direction of the laser beam, the laser beam being passed through the first pipeline, the shielding gas from the supply source being supplied from the gas supply port to the first pipeline; and
a gas jet nozzle provided at an end of the head body facing the workpiece and including a second pipeline, a diameter of the second pipeline being smaller on a side facing the workpiece than on a side facing the head body, and
a distance from the gas supply port in the head body to a connection part is larger than a length of the gas jet nozzle in the traveling direction of the laser beam, the head body and the gas jet nozzle being connected at the connection part.