US 12,708,941 B2 · Three-dimensional additive manufacturing device, control method, and program

Abstract

A three-dimensional additive manufacturing device manufactures a layered structure by supplying powder while changing the positional relationship between a discharge port from which the powder is discharged and the layered structure. The three-dimensional additive manufacturing device includes: a powder supply unit that supplies powder from the discharge port toward the layered structure; a light irradiation unit that irradiates the powder with a light beam to melt and harden the powder to thereby manufacture the layered structure; an imaging unit that captures an image of the manufacturing site; a distance detector that detects a distance from the manufacturing site to the powder supply unit on the basis of the image; and a feedback controller that adjusts a moving speed of the powder supply unit relative to the layered structure on the basis of a detection result of the distance.

Claims9

Dependent claims

A three-dimensional additive manufacturing device for manufacturing a layered structure by supplying powder for manufacturing the layered structure while changing a positional relationship between a discharge port from which the powder is discharged and the layered structure, the device comprising:

a powder supply unit that supplies powder from the discharge port toward the layered structure;
a light irradiation unit that irradiates the powder with a light beam to melt and harden the powder to manufacture the layered structure;
an imaging unit that captures an image of a manufacturing site where the layered structure is being manufactured;
a distance detector that detects a distance from the manufacturing site to the powder supply unit on a basis of the image;
and
a feedback controller that adjusts a moving speed of the powder supply unit relative to the layered structure on a basis of a detection result of the distance;
wherein the distance detector executes binarization processing based on luminance on the image to divide the image into a first region having higher luminance, in which a molten pool formed of melted powder is captured in the image, and a second region having luminance lower than the luminance of the first region and detects the distance on a basis of an area of the first region.

4 more elements

Dependencies are inferred from the claim text.

Three-dimensional additive manufacturing device, control method, and program

Life of this patent

Three-dimensional additive manufacturing device, control method, and program

Life of this patent

Abstract

Claims9