System for online monitoring powder-based 3D printing processes and method thereof
US10086559B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2015 |
| Grant date | Oct 2, 2018 |
| Priority date | — |
| Expiry date | Jan 8, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB33Y50/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A system for online monitoring powder-based 3D printing processes and method thereof are disclosed. A uniform light source having a single wavelength provided by the system is irradiated onto the powder layer before and after applied with glue. Intensities of such reflected images are obtained and subtracted from each other in an image process procedure. A difference obtained through the subtraction is compared with an original 3D model in a computer. If any defect is found such as being larger than a threshold value, the powder-based 3D printing processes will be terminated. Therefore, the technical effects of online printing processes monitoring, time saving and printing resources saving will be achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.