Influence of Elastomer Layers in the Quality of Aluminum Parts on Finishing Operations

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dc.contributor.authorRubio-Mateos, Antonio
dc.contributor.authorRivero, Asuncion
dc.contributor.authorUkar, Eneko
dc.contributor.authorLamikiz, Aitzol
dc.contributor.institutionTecnalia Research & Innovation
dc.contributor.institutionFABRIC_INTEL
dc.contributor.institutionSG
dc.date.issued2020-02-22
dc.descriptionPublisher Copyright: © 2020 by the authors. Licensee MDPI, Basel, Switzerland.
dc.description.abstractIn finishing processes, the quality of aluminum parts is mostly influenced by static and dynamic phenomena. Different solutions have been studied toward a stable milling process attainment. However, the improvements obtained with the tuning of process parameters are limited by the system stiffness and external dampers devices interfere with the machining process. To deal with this challenge, this work analyzes the suitability of elastomer layers as passive damping elements directly located under the part to be machined. Thus, exploiting the sealing properties of nitrile butadiene rubber (NBR), a suitable flexible vacuum fixture is developed, enabling a proper implementation in the manufacturing process. Two different compounds are characterized under axial compression and under finishing operations. The compression tests present the effect of the feed rate and the strain accumulative effect in the fixture compressive behavior. Despite the higher strain variability of the softer rubber, different milling process parameters, such as the tool feed rate, can lead to a similar compressive behavior of the fixture regardless the elastomer hardness. On the other hand, the characterization of these flexible fixtures is completed over AA2024 floor milling of rigid parts and compared with the use of a rigid part clamping. These results show that, as the cutting speed and the feed rate increases, due to the strain evolution of the rubber, the part quality obtained tend to equalize between the flexible and the rigid clamping of the workpiece. Due to the versatility of the NBR for clamping different part geometries without new fixture redesigns, this leads to a competitive advantage of these flexible solutions against the classic rigid vacuum fixtures. Finally, a model to predict the grooving forces with a bull-nose end mill regardless of the stiffness of the part support is proposed and validated for the working range.en
dc.description.statusPeer reviewed
dc.format.extent1
dc.format.extent13507309
dc.identifier.citationRubio-Mateos , A , Rivero , A , Ukar , E & Lamikiz , A 2020 , ' Influence of Elastomer Layers in the Quality of Aluminum Parts on Finishing Operations ' , Metals , vol. 10 , no. 2 , 289 , pp. 289 . https://doi.org/10.3390/met10020289
dc.identifier.doi10.3390/met10020289
dc.identifier.issn2075-4701
dc.identifier.otherresearchoutputwizard: 11556/890
dc.identifier.urlhttp://www.scopus.com/inward/record.url?scp=85081581139&partnerID=8YFLogxK
dc.language.isoeng
dc.relation.ispartofMetals
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subject.keywordsVibrations
dc.subject.keywordsPart quality
dc.subject.keywordsFlexible vacuum fixture
dc.subject.keywordsAA2024 floor milling
dc.subject.keywordsVibrations
dc.subject.keywordsPart quality
dc.subject.keywordsFlexible vacuum fixture
dc.subject.keywordsAA2024 floor milling
dc.subject.keywordsGeneral Materials Science
dc.subject.keywordsMetals and Alloys
dc.subject.keywordsFunding Info
dc.subject.keywordsThis research was funded by Basque Government (Eusko Jaurlaritza) under the ELKARTEK Program, SMAR3NAK project, grant number KK-2019/00051.
dc.subject.keywordsThis research was funded by Basque Government (Eusko Jaurlaritza) under the ELKARTEK Program, SMAR3NAK project, grant number KK-2019/00051.
dc.titleInfluence of Elastomer Layers in the Quality of Aluminum Parts on Finishing Operationsen
dc.typejournal article
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