Method for calibrating an apparatus for producing an object by means of additive manufacturing
US11338522B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2018 |
| Grant date | May 24, 2022 |
| Priority date | — |
| Expiry date | Mar 15, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB33Y50/02
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method for calibrating an apparatus for producing an object by means of additive manufacturing. The apparatus comprises a process chamber, as well as a support for positioning the object in relation to a surface level of a bath of material to be solidified. A solidifying device is arranged for emitting a beam of radiation on the surface level for solidifying a selective part of said material. The solidifying device comprises a focus member for adjusting a focus setting. The method according to the invention comprises the steps of controlling the solidifying device for making test patterns at different focus settings. A calibration system with a sensor unit is used for determining characteristics of test patterns, and a calibrated focus setting is determined based on the characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.