US 12,759,052 B2 · Three-dimensional additive manufacturing device

Abstract

A three-dimensional additive manufacturing device, which performs additive manufacturing by irradiating, with a beam, a powder bed laid on a build surface area, includes a projection unit that is configured to project a pattern in which there is a luminance distribution in the build surface area and the luminance distribution changes over time, an imaging unit configured to image the pattern projected onto the build surface area, and a reflective part configured to reflect at least one among a first light beam projected by the projection unit and a second light beam captured by the imaging unit. The projection and imaging units are disposed outside the chamber where the additive manufacturing is performed on the build surface area. The reflective part is accommodated inside the chamber. The first and second light beams pass through one first window portion installed on the chamber.

Claims14

Dependent claims

A three-dimensional additive manufacturing device that irradiates a powder bed laid in a build surface area with a beam to perform additive manufacturing, the three-dimensional additive manufacturing device comprising:

a projection part that is configured to project a pattern in which there is a luminance distribution in the build surface area and the luminance distribution changes over time;
an imaging part that is configured to image the pattern projected on the build surface area;
and
a reflective part that is configured to reflect at least any one of a first light beam projected by the projection part or a second light beam captured by the imaging part, wherein
the projection part and the imaging part are disposed outside a chamber in which the additive manufacturing is performed on the build surface area,
the reflective part is attached to a side wall or a side portion of the chamber,
the first light beam and the second light beam are able to pass through one first window portion installed in the chamber, and
the reflective part includes a reflective surface that is a curved surface.

5 more elements

a projection part that is configured to project a pattern in which there is a luminance distribution in the build surface area and the luminance distribution changes over time;
an imaging part that is configured to image the pattern projected on the build surface area;
and
a reflective part that is configured to reflect at least any one of a first light beam projected by the projection part or a second light beam captured by the imaging part, wherein
the projection part and the imaging part are disposed outside a chamber in which the additive manufacturing is performed on the build surface area,
the reflective part is accommodated in the chamber,
the first light beam and the second light beam are able to pass through one first window portion installed in the chamber,
the projection part and the imaging part are disposed above the chamber,
the first light beam and the second light beam are able to pass through the first window portion installed on an upper portion of the chamber, and
the reflective part is attached to a side wall of the chamber.

7 more elements

Dependencies are inferred from the claim text.

Three-dimensional additive manufacturing device

Life of this patent

Three-dimensional additive manufacturing device

Life of this patent

Abstract

Claims14