Apparatus for additively manufacturing three-dimensional objects
US-2019160537-A1 · May 30, 2019 · US
Techniques for depowdering additively fabricated parts and related systems and methods
US2021237159A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2021237159-A1 |
| Application number | US-202017117200-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 10, 2020 |
| Priority date | Dec 11, 2019 |
| Publication date | Aug 5, 2021 |
| Grant date | — |
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- Title
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Abstract
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Techniques for depowdering additively fabricated parts are described. The techniques utilize various mechanisms to separate powder from parts. For instance, techniques for depowdering described herein may include fabrication of auxiliary structures in addition to fabrication of parts. Certain auxiliary structures may aid with depowdering operations, and may be fabricated along with parts during an additive fabrication process. The auxiliary structures may be shaped and/or have positional and/or geometrical relationships to the parts during fabrication. For instance, an auxiliary structure may include a cage structure fabricated around one or more parts.
First claim
Opening claim text (preview).
What is claimed is: 1 . A method for extracting one or more additively fabricated parts from a powder bed comprising a ferromagnetic powder and the one or more additively fabricated parts, the method comprising: arranging at least part of the powder bed within an enclosure, the enclosure having one or more magnetic filters arranged within; directing, using one or more nozzles, one or more jets of gas onto a surface of the powder bed within the chamber; and capturing at least some of the ferromagnetic powder on and/or within the one or more magnetic filters. 2 . The method of claim 1 , wherein the one or more magnetic filters comprise one or more permanent magnets. 3 . The method of claim 1 , wherein the one or more magnetic filters each comprise a non-magnetic permeable material arranged over a magnetic material. 4 . The method of claim 1 , wherein the one or more jets of gas are directed downward onto the surface of the powder bed and wherein the one or more magnetic filters are arranged on one or more interior side walls of the enclosure.
Assignees
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Classifications
Process efficiency · CPC title
of powder · CPC title
Open gradient magnetic separators, i.e. separators in which the gap is unobstructed, characterised by the configuration of the gap · CPC title
with magnets moving during operation · CPC title
Magnetic separation of bulk or dry particles in mixtures · CPC title
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- What does patent US2021237159A1 cover?
- Techniques for depowdering additively fabricated parts are described. The techniques utilize various mechanisms to separate powder from parts. For instance, techniques for depowdering described herein may include fabrication of auxiliary structures in addition to fabrication of parts. Certain auxiliary structures may aid with depowdering operations, and may be fabricated along with parts during…
- Who is the assignee on this patent?
- Desktop Metal Inc
- What technology area does this patent fall under?
- Primary CPC classification B22F10/68. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Aug 05 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).