Method for analysing a build layer
AssigneeArcam AB
InventorChristian Ekberg
Life of this patent
Estimating the term…
Abstract
Described is a method for analyzing a build layer (1; 11) in an additive manufacturing machine when forming a three-dimensional article layer by layer by successive fusion of selected areas of powder layers, which selected areas correspond to successive layers of the three-dimensional article. The method comprises the steps of radiating a portion (4; 14) of the build layer (1; 11) by an energy beam and detecting particles emitted, backscattered or reflected from the radiated portion of the build layer, and scanning the portion (4; 14) of the build layer by moving the energy beam along a main path (5; 15) and simultaneously moving the energy beam back-and-forth across the main path in a meandering pattern (6; 16).
Claims21
A method for analyzing a build layer (1;
- 11) in an additive manufacturing machine when forming a three-dimensional article layer by layer by successive fusion of selected areas of powder layers, which selected areas correspond to successive layers of the three-dimensional article, the method comprising the steps of:
- radiating a portion (4;
- 14) of the build layer (1;
- 11) by an energy beam,
- detecting particles emitted, backscattered or reflected from the radiated portion of the build layer, and
- scanning the portion (4;
- 14) of the build layer by moving the energy beam along a main path (5;
- 15) and simultaneously moving the energy beam back-and-forth across the main path in a meandering pattern (6;
- 16).
An arrangement (50;
- 150) for an additive manufacturing machine, the arrangement comprising:
- an energy beam (33;
- 133) configured to radiate a portion (4;
- 14) of a build layer (1;
- 11;
- 34;
- 134);
- a particle detector device (31;
- 131) for detecting particles emitted, backscattered or reflected from the build layer (1;
- 11;
- 34;
- 134) in the additive manufacturing machine;
- and
- a control unit (32;
- 132),
- wherein the control unit (32;
- 132) is configured to:
- detect particles emitted, backscattered or reflected from the radiated portion of the build layer, and
- move the energy beam (33;
- 133) along a main path (5;
- 15) and simultaneously back-and-forth across the main path in a meandering pattern (6;
- 16).
A computer program product comprising at least one non-transitory computer-readable storage medium having computer-readable program code portions embodied therein, the computer-readable program code portions comprising one or more executable portions configured for:
- radiating, via an energy beam (33;
- 133), a portion (4;
- 14) of a build layer (1;
- 11;
- 34;
- 134);
- detecting, via a particle detector device (31;
- 131), particles emitted, backscattered or reflected from the radiated portion of the build layer;
- and
- while radiating moving, via a control unit (32;
- 132), the energy beam (33;
- 133) along a main path (5;
- 15) and simultaneously back-and-forth across the main path in a meandering pattern (6;
- 16).
Dependencies are inferred from the claim text.