System and method for additive production of three-dimensional objects with graphical display

Patent metadata

Field	Value
Publication number	US-10953604-B2
Application number	US-201815911766-A
Country	US
Kind code	B2
Filing date	Mar 5, 2018
Priority date	Mar 3, 2017
Publication date	Mar 23, 2021
Grant date	Mar 23, 2021

Abstract

Apparatus for the additive production of three-dimensional objects by successive layerwise selective exposure and consequent successive layerwise selective solidification of construction material layers of a construction material that can be solidified by means of an energy beam, comprising: —an exposure device, which is configured in order to generate an energy beam for the successive layerwise selective exposure and consequent successive layerwise selective solidification of construction material layers of a construction material that can be solidified by means of the energy beam, and—a measuring device for measuring a temperature, wherein the measuring device is configured in order to measure a temperature at at least one measurement point, the measurement point being assigned to at least one three-dimensional object formed at least partially from solidified construction material or to at least one object section formed in the scope of the additive production of an object to be produced additively.

First claim

The invention claimed is:

1. A system for additively manufacturing three-dimensional objects, the apparatus comprising:
an exposure device configured to generate an energy beam for selectively exposing successive layers of construction material, the energy beam causing selective solidification of exposed portions of the construction material;
a measuring device configured to determine for respective ones of the successive layers of construction material, a temperature measurement at a plurality of measurement points, the plurality of measurement points for a respective successive layer of construction material comprising (i) a first plurality of measurement points corresponding to a first three-dimensional object having been at least partially formed, and (ii) a second plurality of measurement points corresponding to a second three-dimensional object having been at least partially formed concurrently with the first three-dimensional object; and
a display device comprising a display area comprising a first display area region and a second display area region, the display device configured to display in the first display area region on the display area, (i) a first graphical representation comprising the first three dimensional object and the first plurality of measurement points as a function of position and time, and (ii) a second graphical representation comprising the second three dimensional object and the second plurality of measurement points as a function of position and time, wherein the first graphical representation and the second graphical representation are displayed simultaneously,
the display device further configured to simultaneously display in the second display area region on the display area, (i) at least one of the first plurality of measurement points, and (ii) at least one of the second plurality of measurement points.

2. The system of claim 1 , wherein at least one of the plurality of measurement points resides along a construction plane, the construction plane being adjacent to a construction module in which the first three-dimensional object and/or the second three dimensional object are or have been at least partially formed.

3. The system of claim 1 , wherein at least one of the plurality of measurement points comprises a two-dimensional coordinate that resides within a construction module in which the first three-dimensional object and/or the second three dimensional object are or have been at least partially formed.

4. The system of claim 1 , wherein at least one of the plurality of measurement points resides along a construction plane, the construction plane being adjacent to a construction module in which the first three-dimensional object and/or the second three dimensional object are or have been at least partially formed; and
wherein at least one of the plurality of measurement points resides within a construction module in which the first three-dimensional object and/or the second three dimensional object are or have been at least partially formed.

5. The system of claim 1 , wherein the temperature measurement of the first plurality of measurement points and/or the temperature measurement of the second plurality of measurement points are repeated at a plurality of different times.

6. The system of claim 1 , wherein the first graphical representation comprises a first thermal gradient of the first three-dimensional object, the thermal gradient determined based at least in part on the first plurality of measurement points; and/or wherein the second graphical representation comprises a second thermal gradient of the second three-dimensional object, the second thermal gradient determined based at least in part on the second plurality of measurement points.

7. The system of claim 1 , comprising:
a temperature regulating device configured to regulate a temperature corresponding to at least one of the plurality of measurement points based at least in part on one or more temperature measurements determined with the measuring device.

8. The system of claim 1 , wherein the system is configured to perform selective laser melting, selective laser sintering, or selective electron beam melting.

9. The system of claim 1 , comprising:
a heating element configured to heat at least a portion of a construction module corresponding to at least one of the plurality of measurement points based at least in part on one or more temperature measurements determined with the measuring device.

10. The system of claim 1 , comprising:
a cooling element configured to cool at least a portion of a construction module corresponding to at least one of the plurality of measurement points based at least in part on one or more temperature measurements determined with the measuring device.

11. A method of additively manufacturing three-dimensional objects, the method comprising:
selectively exposing successive layers of construction material to an energy beam from an exposure device, the energy beam causing selective solidification of exposed portions of the construction material;
determining with a measuring device, a temperature measurement at a plurality of measurement points for respective ones of the successive layers of construction material, the plurality of measurement points for a respective successive layer of construction material comprising (i) a first plurality of measurement points corresponding to a first three-dimensional object having been at least partially formed, and (ii) a second plurality of measurement points corresponding to a second three-dimensional object having been at least partially formed concurrently with the first three-dimensional object;
displaying on a first display area region of a display area of a display device, (i) a first graphical representation comprising the first three dimensional object and the first plurality of measurement points as a function of position and time, and (ii) a second graphical representation comprising the second three dimensional object and the second plurality of measurement points as a function of position and time, wherein the first graphical representation and the second graphical representation are displayed simultaneously; and
displaying on the second display area region of the display area of the display device, (i) at least one of the first plurality of measurement points, and (ii) at least one of the second plurality of measurement points, wherein the at least one of the first plurality of measurement points and the at least one of the second plurality of measurement points are displayed simultaneously.

12. The method of claim 11 , wherein at least one of the plurality of measurement points resides along a construction plane, the construction plane being adjacent to a construction module in which the first three-dimensional object and/or the second three dimensional object are or have been at least partially formed.

13. The method of claim 11 , wherein at least one of the plurality of measurement points resides within a construction module in which the first three-dimensional object and/or the second three dimensional object are or have been at least partially formed.

14. The method of claim 11 , wherein at least one of the plurality of measurement points resides along a construction plane, the construction plane being adjacent to a construction module in which the first three-dimensional object and/or the second three dimensional object are or have been at least partially formed; and
wherein at least one of the plurality of measurement points resides within a construction module in which the first three-dimensional object and/or the second three dimensional object are

Assignees

• Cl Schutzrechtsverwaltungs Gmbh
• Concept Laser Gmbh

Inventors

• Schumann Philipp
• Hetzel Ralf
• Traut Tanja

Classifications

• B22F12/90

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

• B22F12/20

  Cooling means · CPC title

• B22F12/17

  to heat the build chamber or platform · CPC title

• B22F10/368

  Temperature or temperature gradient, e.g. temperature of the melt pool · CPC title

• B22F10/28

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