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In-process path replanning and online layer height control through deposition arc current for gas metal arc based additive manufacturing
ID Ščetinec, Aljaž (Avtor), ID Klobčar, Damjan (Avtor), ID Bračun, Drago (Avtor)

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Izvleček
Wire Arc Additive Manufacturing (WAAM) is recently receiving increasing attention as it offers a way to produce parts on a meter scale with high deposition rates and low production and capital costs. A major challenge in WAAM is the inherently variable layer height, which causes geometric inaccuracies in the final product. This paper proposes an on-line layer height control and in-process toolpath replanning for Gas Metal Arc (GMA) WAAM system, which enables better geometric accuracy when depositing tall shell parts. Deposition arc current and voltage were considered as control variables for layer height control. Arc current proved to be a more suitable control variable due to its higher sensitivity and higher correlation with changes in the contact tip to work distance. Different types of layer height controllers were developed and evaluated by depositing 30-layer high thin walls. Additionally, a re-slice algorithm was developed and implemented in the system controller. It compares the deposited section of the part to the CAD model after each layer has been built. The algorithm replans (re-slices) the toolpath to ensure better geometric accuracy of the finished part when the deviation exceeds the maximum allowable threshold. A 160 mm high case study part was manufactured and 3D scanned to demonstrate the novelty of the developed system. Results show that the layer height control keeps distance between the welding torch and the part surface during the deposition. Re-slice control, combined with layer height control, enables the manufacture of parts with correct final geometry.

Jezik:Angleški jezik
Ključne besede:GMAW WAAM, closed-loop control, layer height, toolpath planning, arc current sensing, thin-walled parts
Vrsta gradiva:Članek v reviji
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FS - Fakulteta za strojništvo
Status publikacije:Objavljeno
Različica publikacije:Objavljena publikacija
Leto izida:2021
Št. strani:Str. 1169-1179
Številčenje:Vol. 64
PID:20.500.12556/RUL-138457 Povezava se odpre v novem oknu
UDK:621.791(045)
ISSN pri članku:1526-6125
DOI:10.1016/j.jmapro.2021.02.038 Povezava se odpre v novem oknu
COBISS.SI-ID:54240259 Povezava se odpre v novem oknu
Datum objave v RUL:21.07.2022
Število ogledov:840
Število prenosov:104
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
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Gradivo je del revije

Naslov:Journal of manufacturing processes
Skrajšan naslov:J. manuf. process.
Založnik:Elsevier, Society of Manufacturing Engineers
ISSN:1526-6125
COBISS.SI-ID:1281557 Povezava se odpre v novem oknu

Licence

Licenca:CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
Opis:Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:MIG/MAG WAAM, zaprtozančno krmiljenje, generacija poti, merjenje jakosti, varilni tok, tankostenski izdelki

Projekti

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:P2-0270
Naslov:Proizvodni sistemi, laserske tehnologije in spajanje materialov

Financer:Drugi - Drug financer ali več financerjev
Program financ.:Daihen Corporation

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