Three-dimensional deposition device and method

Patent metadata

Field	Value
Publication number	US-12409497-B2
Application number	US-201917426521-A
Country	US
Kind code	B2
Filing date	Dec 13, 2019
Priority date	Jun 11, 2019
Publication date	Sep 9, 2025
Grant date	Sep 9, 2025

Abstract

In the three-dimensional deposition device and the three-dimensional deposition method, included are: a powder passage and a nozzle injection opening serving as a powder supply unit that supplies powder toward an object to be processed; a laser path serving as a light irradiation unit that irradiates the powder with a laser beam to sinter or melt and solidify at least a part of the powder irradiated with the laser beam to form a formed layer; an interference information acquisition unit that acquires interference information on the object to be processed with the powder injected from the nozzle injection opening based on the shape of the object to be processed; and a controller that changes the powder passage of the powder that the nozzle injection opening supplies to the object to be processed based on the interference information acquired by the interference information acquisition unit.

First claim

The invention claimed is:

1. A three-dimensional deposition device configured to form a three-dimensional object by depositing a formed layer on an object to be processed, the three-dimensional deposition device comprising:
a powder supply unit configured to supply a powder material to a working surface of the object to be processed:
a light irradiation unit configured to irradiate the powder material with a light beam to sinter or melt and solidify at least a part of the powder material irradiated with the light beam to form the formed layer;
an interference information acquisition detector configured to acquire interference information on the object to be processed with the powder material injected from the powder supply unit based on the shape of the object to be processed; and
a controller configured to change a supply path of the powder material supplied from the powder supply unit to a working surface of the object to be processed based on the interference information acquired by the interference information acquisition detector,
wherein the powder supply unit includes a plurality of powder injection units provided around the light irradiation unit at predetermined intervals in a circumferential direction, and the controller stops injection of the powder material from the powder injection unit injecting the powder material that is estimated to interfere with the object to be processed.

2. The three-dimensional deposition device according to claim 1 , wherein, when the controller stops the injection of the powder material from the powder injection unit that injects the powder material that is estimated to interfere with the object to be processed, the controller increases an injection amount of the powder material injected from the powder injection unit other than the powder injection unit that has stopped the injection of the powder material.

3. The three-dimensional deposition device according to claim 1 , wherein, when the controller stops the injection of the powder material from the powder injection unit that injects the powder material that is estimated to interfere with the object to be processed, the controller adjusts output of the light beam emitted from the light irradiation unit.

4. The three-dimensional deposition device according to claim 3 , wherein, when the controller stops the injection of the powder material from the powder injection unit that injects the powder material that is estimated to interfere with the object to be processed, the controller adjusts the processing speed of the object to be processed.

5. The three-dimensional deposition device according to claim 1 , wherein the interference information acquisition detector acquires a shape of the object to be processed in advance, an operating program of the powder supply unit and the light irradiation unit is set based on the acquired shape of the object to be processed, and the controller controls the powder supply unit or the light irradiation unit based on the operating program.

6. The three-dimensional deposition device according to claim 1 , wherein the interference information acquisition detector includes a detector that detects or estimates a reaching status of the powder material supplied from the powder supply unit to the object to be processed, and the controller controls the powder supply unit based on a detection result obtained by the detector.

7. A three-dimensional deposition method of forming a three-dimensional object by depositing a formed layer on an object to be processed, the three-dimensional deposition method comprising:
a step of supplying a powder material toward a working surface of the object to be processed from a powder supply unit includes a plurality of powder injection units provided around a light irradiation unit at predetermined intervals in a circumferential direction;
a step of irradiating the powder material with a light beam to sinter or melt and solidify at least a part of the powder material irradiated with the light beam to form the formed layer from the light irradiation unit;
a step of acquiring interference information on the object to be processed with the powder material based on the shape of the object to be processed; and
and a step of changing a supply path of the powder material to the object to be processed based on the interference information,
wherein in the step of changing the supply path, stopping injection of the powder material from the powder injection unit injecting the powder material that is estimated to interfere with the object to be processed.

Assignees

• Mitsubishi Heavy Ind Machine Tool Co Ltd
• Tech Res Association Future Additive Manufacturing

Inventors

• WAKANA Tomohiro

Classifications

• B23K26/34

  Laser welding for purposes other than joining · CPC title

• B22F10/28

  Powder bed fusion, e.g. selective laser melting [SLM] or electron beam melting [EBM] · CPC title

• B22F12/90

  Means for process control, e.g. cameras or sensors · CPC title

• B33Y50/02

  for controlling or regulating additive manufacturing processes · CPC title

• B33Y30/00

  Apparatus for additive manufacturing; Details thereof or accessories therefor · CPC title