Three-dimensional printing system optimizing contour formation for multiple energy beams
US11440098B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2019 |
| Grant date | Sep 13, 2022 |
| Priority date | — |
| Expiry date | Nov 5, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/25
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A system for forming a three-dimensional (3D) article includes a powder dispenser, a fusing apparatus, and a controller. The plurality of energy beams include at least a first beam and a second beam. The controller is configured to operate the powder dispenser to dispense a layer of powder and to operate the fusing apparatus to selectively fuse the layer of powder. Operating the fusing apparatus includes operating the first beam to fuse a first hatch pattern over a first area of the layer of powder and operate at least the second beam to fuse a contour that bounds the hatch pattern. The contour is formed from N scans along the contour. N is an integer that is at least equal to one. N is determined by a lateral alignment uncertainty between at least two of the energy beams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.