Irradiation devices, machines, and methods for producing three-dimensional components

Patent metadata

Field	Value
Publication number	US-2018345413-A1
Application number	US-201816100572-A
Country	US
Kind code	A1
Filing date	Aug 10, 2018
Priority date	Feb 10, 2015
Publication date	Dec 6, 2018
Grant date	—

Abstract

Methods and computer-readable media for producing at least one portion of a layer of a three-dimensional component by irradiating at least one powder layer by at least one high-energy beam, e.g., a laser beam are disclosed. The methods include irradiating the powder layer by the at least one high-energy beam in a processing field, wherein the at least one high-energy beam is moved in a continuous oscillating movement over the powder layer in a first direction to produce a line-shaped irradiation region in which the powder layer is melted, and wherein the line-shaped irradiation region is moved over the powder layer in a second direction that differs from the first to produce the portion of the layer of the three-dimensional component.

First claim

What is claimed is:

1 . A method for producing at least one portion of a layer of a three-dimensional component, the method comprising
irradiating at least one powder layer with at least one high-energy beam in a processing field; moving the at least one high-energy beam in a continuous oscillating movement over the powder layer in a first direction to produce a line-shaped irradiation region in which the powder layer is melted; and moving the line-shaped irradiation region over the powder layer in a second direction that differs from the first direction to produce the portion of the layer of the three-dimensional component.

2 . The method of claim 1 , wherein the at least one high-energy beam is moved in the processing field with the aid of two scanner mirrors of a scanner device.

3 . The method of claim 1 , wherein the at least one high-energy beam is a laser beam, and wherein the three-dimensional component is produced layer-by-layer by selective laser melting or selective laser sintering.

4 . The method of claim 1 , wherein the at least one powder layer is irradiated by means of the at least one high-energy beam in a processing chamber of a processing machine configured to produce three-dimensional components by irradiating powder layers, wherein the processing chamber has a carrier for applying the powder layers.

5 . The method of claim 4 , wherein the at least one high-energy beam is a laser beam.

6 . The method of claim 1 , wherein at least two high-energy beams are moved over the powder layer in the first direction with an oscillating movement to produce the line-shaped irradiation region.

7 . The method of claim 1 , wherein the first direction, the second direction, or both the first and second directions, are changed when moving the line-shaped irradiation region over the powder layer.

8 . The method of claim 1 , wherein a length of the line-shaped irradiation region in the first direction is changed when moving the line-shaped irradiation region over the powder layer.

9 . The method of claim 1 , wherein a velocity of the high-energy beam during the oscillating movement in the first direction is at least ten times greater than a velocity of the high-energy beam during the movement of the line-shaped irradiation region in the second direction.

10 . The method of claim 1 , wherein the movements of the at least one high-energy beam in the two directions are matched to one another such that positions within the line-shaped irradiation region are scanned at least two times by the high-energy beam.

11 . The method of claim 10 , wherein each position within the line-shaped irradiation region is scanned at least two times.

12 . The method of claim 10 , wherein positions within the line-shaped irradiation region are scanned at least three times.

13 . The method of claim 1 , wherein the at least one high-energy beam is moved at a constant velocity over the powder layer during the continuous oscillating movement in the first direction.

14 . The method of claim 1 , wherein a power of the at least one high-energy beam at two reversing points of the continuous oscillating movement is reduced in relation to a power of the at least one high-energy beam between the two reversing points of the continuous oscillating movement.

15 . The method of claim 1 , wherein the continuous oscillating movement in the first direction has superimposed thereon a further continuous oscillating movement in the second direction that differs from the first.

16 . The method of claim 15 , wherein the oscillating movement in the first direction is implemented at a first oscillation frequency and wherein the further oscillating movement in the second direction is implemented at a second oscillation frequency, wherein the second oscillation frequency is an integer multiple of the first oscillation frequency.

17 . The method of claim 16 , wherein the second oscillation frequency is the same as the first oscillation frequency.

18 . The method of claim 16 , wherein a phase shift between the oscillating movement in the first direction and the further oscillating movement in the second direction lies at π/2.

19 . One or more non-transitory computer-readable media storing instructions that are executable by a processing machine configured to produce three-dimensional components by irradiating powder layers, and upon such execution cause the processing machine to perform operations comprising:
irradiating at least one powder layer with at least one high-energy beam in a processing field; moving the at least one high-energy beam in a continuous oscillating movement over the powder layer in a first direction to produce a line-shaped irradiation region in which the powder layer is melted; and moving the line-shaped irradiation region over the powder layer in a second direction that differs from the first direction to produce the portion of the layer of the three-dimensional component.

Assignees

• Trumpf Laser & Systemtechnik Gmbh

Inventors

• Wuest Frank Peter
• Koenig Thomas
• Buchbinder Damien
• Wagner Joachim
• Bauer Johannes

Classifications

• B33Y50/00

  Data acquisition or data processing for additive manufacturing · CPC title

• B33Y30/00

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

• B23K26/082

  Scanning systems, i.e. devices involving movement of the laser beam relative to the laser head · CPC title

• B23K26/342 Primary

  Build-up welding · CPC title

• B29C64/268

  using laser beams; using electron beams [EB] · CPC title