Three-dimensional laminating and shaping apparatus and laminating and shaping method
US10919105B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 4, 2018 |
| Grant date | Feb 16, 2021 |
| Priority date | — |
| Expiry date | May 29, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/25
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Provided is a three-dimensional laminating and shaping apparatus 100 including a column unit 200 that is configured to output an electron beam EB and deflect the electron beam EB toward the front surface of a powder layer 32, an electron detector 72 that is configured to detect electrons that may be emitted in a predetermined direction from the front surface of the powder layer 32 when the powder layer 32 is irradiated with the electron beam EB, a melting judging unit 410 that is configured to generate a melting signal based on the strength of the detection signal from the electron detector 72, and a deflection controller 420 that is configured to receive the melting signal to determine the condition of the irradiation the electron beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.