Method for producing a three-dimensional component

Patent metadata

Field	Value
Publication number	US-11247400-B2
Application number	US-201615566210-A
Country	US
Kind code	B2
Filing date	Apr 6, 2016
Priority date	Apr 22, 2015
Publication date	Feb 15, 2022
Grant date	Feb 15, 2022

Abstract

The invention relates to a method for manufacturing a three-dimensional component 14 by means of an additive construction method in which the component 14 is constructed by solidifying construction material 9 that can be solidified using radiation 18, especially a selective laser melting method or a selective laser sintering method, in which the component 14 is produced by successively solidifying construction material 9 that can be solidified using the impact of radiation 18 by melting or sintering.

First claim

The invention claimed is:

1. A method of classifying an additively manufactured component with respect to quality, the method comprising:
determining sensor values corresponding to melting and/or sintering characteristics detected by a sensor apparatus when an irradiation device of an additive manufacturing machine selectively melts and/or sinters sequential layers of construction material to form a component, the sensor values being spatially localized with respect to coordinates of the component;
determining a localized quality for one or more load bearing areas and/or critical load areas of the component being additively manufactured in the additive manufacturing machine, the one or more load bearing areas and/or critical load areas defined at least in part by spatially localized load and flux information, the localized quality determined based at least in part on sensor values having a spatial location corresponding to the one or more load bearing areas and/or critical load areas of the component;
classifying the component while being additively manufactured with respect to overall quality based at least in part on the localized quality for the one or more load bearing areas and/or critical load areas of the component;
wherein classifying the component with respect to overall quality comprises determining that one or more sensor values indicating an actual or potential negative localized quality are spatially localized to an area having a defined distance from the one or more load bearing areas and/or critical load areas, wherein the defined distance depends on a safety classification of the component; and
performing a repair process upon at least a portion of the component when one or more sensor values indicating an actual or potential negative localized quality spatially correspond to a respective one of the one or more load bearing areas and/or critical load areas.

2. The method of claim 1 , comprising providing a graphical representation comprising the sensor values and the one or more load bearing areas and/or critical load areas of the component respectively spatially localized in a two-dimensional or multidimensional illustration of the component.

3. The method of claim 2 , comprising visually highlighting at least a portion of a respective one of the one or more load bearing areas and/or critical load areas when one or more sensor values spatially corresponding thereto indicate an actual or potential negative localized quality.

4. The method of claim 1 wherein the load and flux information comprises a plurality of flux areas and/or flux lines.

5. The method of claim 4 , comprising visually highlighting a respective one of the plurality of flux areas and/or flux lines when one or more sensor values spatially corresponding thereto indicate an actual or potential negative localized quality.

6. The method of claim 1 , comprising:
aborting additively manufacturing the component when one or more sensor values indicating an actual or potential negative localized quality spatially correspond to a respective one of the one or more load bearing areas and/or critical load areas.

7. The method of claim 1 , wherein classifying the component with respect to overall quality comprises classifying the component with respect to a plurality of safety levels depending on the defined distance of the one or more sensor values indicating an actual or potential negative localized quality from the one or more load bearing areas and/or critical load areas.

8. The method of claim 1 , wherein the repair process comprises further selectively melting and/or sintering at least one layer of construction material with radiation from an additive manufacturing apparatus at least at a region of the at least one layer corresponding to the respective one of the one or more load bearing areas and/or critical load areas.

9. The method of claim 8 , comprising:
determining sensor values corresponding to melting and/or sintering characteristics detected by the sensor apparatus when performing the repair process;
determining a localized quality for one or more load bearing areas and/or critical load areas of the component being or having been subjected to the repair process; and
re-classifying the component with respect to overall quality after being or having been subjected to the repair process.

10. The method of claim 1 , wherein classifying the component with respect to overall quality comprises classifying the component with respect to one of a plurality of different safety levels, respective ones of the plurality of different safety levels based at least in part on a respective distance of a spatial location of one or more sensor values indicating an actual or potential negative localized quality from the one or more load bearing areas and/or critical load areas.

11. The method of claim 1 , wherein the localized quality comprises a strength property of the component.

12. The method of claim 11 , wherein the strength property comprises a yield stress or a von Mises yield criterion.

13. The method of claim 1 , wherein the melting and/or sintering characteristics comprise a shape and/or size of a melt pool.

Assignees

• Cl Schutzrechtsverwaltungs Gmbh
• Concept Laser Gmbh

Inventors

• Herzog Frank

Classifications

• B22F12/90

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

• B22F10/85

  for controlling or regulating additive manufacturing processes · CPC title

• B22F10/38

  to achieve specific product aspects, e.g. surface smoothness, density, porosity or hollow structures · CPC title

• B22F10/28

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

• B33Y50/02

  for controlling or regulating additive manufacturing processes · CPC title