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dc.contributor.authorRubio-Mateos, Antonio
dc.contributor.authorRivero, Asuncion
dc.contributor.authorUkar, Eneko
dc.contributor.authorLamikiz, Aitzol
dc.date.accessioned2020-03-04T11:11:29Z
dc.date.available2020-03-04T11:11:29Z
dc.date.issued2020-02-22
dc.identifier.citationRubio-Mateos, Antonio, Asuncion Rivero, Eneko Ukar, and Aitzol Lamikiz. “Influence of Elastomer Layers in the Quality of Aluminum Parts on Finishing Operations.” Metals 10, no. 2 (February 22, 2020): 289. doi:10.3390/met10020289.en
dc.identifier.issn2075-4701en
dc.identifier.urihttp://hdl.handle.net/11556/890
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.sponsorshipThis research was funded by Basque Government (Eusko Jaurlaritza) under the ELKARTEK Program, SMAR3NAK project, grant number KK-2019/00051.en
dc.language.isoengen
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)en
dc.rightsAttribution 4.0 International*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.titleInfluence of Elastomer Layers in the Quality of Aluminum Parts on Finishing Operationsen
dc.typearticleen
dc.identifier.doi10.3390/met10020289en
dc.rights.accessRightsopenAccessen
dc.subject.keywordsVibrationsen
dc.subject.keywordsPart qualityen
dc.subject.keywordsFlexible vacuum fixtureen
dc.subject.keywordsAA2024 floor millingen
dc.issue.number2en
dc.journal.titleMetalsen
dc.page.initial289en
dc.volume.number10en


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