In-situ calibration of laser/galvo scanning system using dimensional reference artefacts.
CIRP Ann Manuf Technol
; 69(1)2020.
Article
en En
| MEDLINE
| ID: mdl-34121755
ABSTRACT
Laser powder bed fusion systems use a high-power laser, steered by two galvanometer (galvo) mirrors to scan a pattern on metal powder layers. Part geometric tolerances depend on the positioning accuracy of the laser/galvo system. This paper describes an in-situ calibration technique utilizing a camera coaxially aligned with the laser imaging a dimensional reference artefact. The laser positions are determined from the images captured by the camera while scanning the artefact. The measurement uncertainty is estimated using simulations. The in-situ calibration results are compared with the results obtained from the typical 'mark and measure' galvo calibration method.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
CIRP Ann Manuf Technol
Año:
2020
Tipo del documento:
Article
País de afiliación:
Estados Unidos