Three-dimensional laminating and shaping apparatus and laminating and shaping method
US11229971B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2018 |
| Grant date | Jan 25, 2022 |
| Priority date | — |
| Expiry date | Jan 9, 2040 |
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 insulating portion that electrically insulates a three-dimensional structure 36 from a ground potential member, an ammeter 73 that is configured to measure the current value indicative of the current flowing into the ground after passing through the three-dimensional structure 36, a melting judging unit 410 that is configured to detect that the powder layer 32 is melted based on the current value measured by the ammeter 73 and generate a melting signal, and a deflection controller 420 that is configured to receive the melting signal to determine the condition for the irradiation with the electron beam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.