Apparatus for additively manufacturing three-dimensional objects

Patent metadata

Field	Value
Publication number	US-11260602-B2
Application number	US-202017063944-A
Country	US
Kind code	B2
Filing date	Oct 6, 2020
Priority date	Aug 7, 2017
Publication date	Mar 1, 2022
Grant date	Mar 1, 2022

Abstract

An apparatus for additively manufacturing three-dimensional objects may include a first detection device configured to detect a first process parameter during operation of the apparatus, and to generate a first data set comprising information relating to the first process parameter, a second detection device configured to detect a second process parameter during operation of the apparatus, and to generate a second data set comprising information relating to the second process parameter; and a data processing device configured to determine a mutual dependency between the first process parameter and the second process parameter based at least in part on the first data set and the second data set. The mutual dependency may include a possible influence or a real influence of the first process parameter on the second process parameter. The first process parameter may include a chemical parameter and/or a physical parameter of an atmosphere within a process chamber of the apparatus. The second process parameter may include a chemical parameter, a geometrical parameter, and/or a physical parameter of build material during operation of the apparatus.

First claim

The invention claimed is:

1. An apparatus for additively manufacturing three-dimensional objects, the apparatus comprising:
a first detection device configured to detect a first process parameter during operation of the apparatus, and to generate a first data set comprising information relating to the first process parameter;
a second detection device configured to detect a second process parameter during operation of the apparatus, and to generate a second data set comprising information relating to the second process parameter; and
a data processing device configured to determine a mutual dependency between the first process parameter and the second process parameter, the mutual dependency based at least in part on the first data set and the second data set;
wherein the mutual dependency comprises a possible influence or a real influence of the first process parameter on the second process parameter;
wherein the first process parameter comprises a chemical parameter and/or a physical parameter of an atmosphere within a process chamber of the apparatus; and
wherein the second process parameter comprises a chemical parameter, a geometrical parameter, and/or a physical parameter of a build material during operation of the apparatus.

2. The apparatus of claim 1 , wherein the build material comprises a powdered build material.

3. The apparatus of claim 1 , wherein the build material comprises a metal powder, a ceramic powder, or a polymer powder.

4. The apparatus of claim 1 , wherein the build material comprises a mixture of chemically different materials.

5. The apparatus of claim 1 , wherein the build material is configured to be selectively solidified by irradiation from an energy beam.

6. The apparatus of claim 1 , wherein the first process parameter comprises a chemical parameter and/or a physical parameter of: a functional device of the apparatus, a gaseous fluid stream streaming through the process chamber of the apparatus, or an energy beam for selectively irradiating a build material layer.

7. The apparatus of claim 1 , wherein the first process parameter comprises: a density parameter, a humidity parameter, a gas fraction concentration parameter, an inertization parameter, a temperature parameter, and/or a pressure parameter.

8. The apparatus of claim 1 , wherein the first detection device comprises:
a sensor element configured to detect the first process parameter.

9. The apparatus of claim 1 , wherein the second detection device comprises:
a sensor element configured to detect the second process parameter.

10. The apparatus of claim 1 , comprising:
a process control device configured to control the first process parameter and/or the second process parameter based at least in part on the mutual dependency.

11. The apparatus of claim 1 , comprising:
an information output device configured to output audio information and/or video information, the audio information and/or the video information relating to the mutual dependency.

12. The apparatus of claim 11 , wherein the audio information comprises an audio warning and/or the video information comprises a video warning.

13. The apparatus of claim 1 , comprising:
a data storage device configured to store the mutual dependency of the first process parameter and the second process parameter.

14. The apparatus of claim 1 , wherein the possible influence or the real influence of the first process parameter on the second process parameter comprises a possible influence or a real influence of a change to the first process parameter on the second process parameter.

15. A method of additively manufacturing a three-dimensional object, the method comprising:
detecting, with a first detection device, a first process parameter during operation of an apparatus for additively manufacturing three-dimensional objects, and generating a first data set comprising information relating to the first process parameter;
detecting, with a second detection device, a second process parameter during operation of the apparatus, and generating a second data set comprising information relating to the second process parameter; and
determining, with a data processing device, a mutual dependency between the first process parameter and the second process parameter, the mutual dependency based at least in part on the first data set and the second data set;
wherein the mutual dependency comprises a possible or real influence of the first process parameter on the second process parameter;
wherein the first process parameter comprises a chemical parameter and/or a physical parameter of an atmosphere within a process chamber of the apparatus; and
wherein the second process parameter comprises a chemical parameter, a geometrical parameter, and/or a physical parameter of build material during operation of the apparatus.

16. The method of claim 15 , wherein the build material comprises a metal powder, a ceramic powder, or a polymer powder.

17. The method of claim 15 , comprising:
selectively solidifying the build material with irradiation from an energy beam.

18. The method of claim 15 , wherein the first process parameter comprises a chemical parameter and/or a physical parameter of: a functional device of the apparatus, a gaseous fluid stream streaming through the process chamber of the apparatus, or an energy beam for selectively irradiating a build material layer.

19. The method of claim 15 , comprising:
controlling, with a process control device, the first process parameter and/or the second process parameter based at least in part on the mutual dependency.

20. The method of claim 19 , comprising:
outputting, with an information output device, audio information and/or video information, the audio information and/or the video information relating to the mutual dependency.

Assignees

• Concept Laser Gmbh

Inventors

• Bechmann Florian
• Bokkes Tobias
• Schumann Philipp
• Popp Alexandra
• Ebert Marie-Christin

Classifications

• B22F12/90

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

• B22F10/32

  of the atmosphere, e.g. composition or pressure in a building chamber · CPC title

• B22F10/34

  of powder characteristics, e.g. density, oxidation or flowability · CPC title

• B22F10/28

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

• B33Y40/00

  Auxiliary operations or equipment, e.g. for material handling · CPC title