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  4. Focus shift control of a novel 30 kW laser remote scanner for large-scale industrial sheet and plate metal applications
 
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Focus shift control of a novel 30 kW laser remote scanner for large-scale industrial sheet and plate metal applications

Citation Link: https://doi.org/10.15480/882.3046
Publikationstyp
Conference Paper
Date Issued
2020-09-15
Sprache
English
Author(s)
Cerwenka, Georg  
Paternina, Jully  
Elhefnawy, Mohamed  
Wollnack, Jörg  
Emmelmann, Claus  orcid-logo
Institut
Laser- und Anlagensystemtechnik T-2  
Produktionsmanagement und -technik M-18  
TORE-DOI
10.15480/882.3046
TORE-URI
http://hdl.handle.net/11420/7749
Journal
Procedia CIRP  
Volume
94
Start Page
817
End Page
822
Citation
Procedia CIRP (94): 817-822 (2020)
Contribution to Conference
11th CIRP Conference on Photonic Technologies, LANE 2020  
Publisher DOI
10.1016/j.procir.2020.09.118
Scopus ID
2-s2.0-85093360410
Publisher
Elsevier
To overcome current limitations in laser remote processing of large-scale sheet and plate metal applications, an automated laser remote scanner (LRS) with a 30 kW laser power has been developed. Due to the high laser power, an unacceptable focus shift occurs at the processing location, mainly generated by the fused silica optics. A computationally efficient real-time focus shift compensation and control of the focus position have been investigated and are presented. In the first section, the 30 kW LRS concept is briefly introduced. Section two explains the focus shift effect and presents its impact on manufacturing scenarios in welding and cutting. The third section highlights significant effects accounted for: thermo-optical, stress-optical, geometric, and ambient. A set of simulated data of temperature, refractive index, and focus shift profiles have been generated in section four and model the performance of the 30 kW LRS. The results are discussed and a summary is given.
Subjects
30 kW Laser Remote Scanner
Ambient Condition
Cutting
End Effect
Focus Shift
Fused Silica
Real-time
Stress-optical
Thermo-optical
Welding
DDC Class
600: Technik
More Funding Information
This research was kindly funded by the German Federal Ministry for Economic Affairs and Energy (BMWi) after a decision of the Deutsche Bundestag within the framework of the research proectj “QuInLas” and “ShipLight”.
Publication version
publishedVersion
Lizenz
https://creativecommons.org/licenses/by-nc-nd/4.0/
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