63121 20200221144222.0 doi 10.1016/j.jmsy.2016.10.002 sideral 96789 ART-2016-96789 eng (orcid)0000-0002-1093-8233 Pérez Muñoz, Pablo Universidad de Zaragoza Analysis of the initial thermal stabilization and air turbulences effects on Laser Tracker measurements 2016 Access copy available to the general public Unrestricted During the several last years, Laser Trackers have become more common as a measurement tool in the manufacture and assembly of large components such as aircraft wings and ship hulls, as well as for error mapping in coordinate measuring machines and machine tools. Most of these processes cannot be developed in a controlled metrological laboratory but must be implemented directly on a shop floor. Therefore, the process of stabilization of the Laser Tracker has been studied in several experimental tests, and it has been observed that the warm-up time suggested by the manufacturer is not enough. During the first hours of the measurement process two types of thermal errors significantly affect the measurements, causing inaccuracies of between 20 and 80 µm, depending on the equipment used and the positions of the measured points. These thermal errors are systematic and repeatable; therefore they can be estimated and compensated for each measurement system. Because environmental conditions on a shop floor cannot be controlled, once the Laser Tracker is stabilized, the effects of ambient air in measurements have also been studied, focusing on the effect of turbulent flows on the beam path. It has been observed that this turbulence may cause radial distance drifts on the order of micrometers, deflection of the beam trajectory and signal loss. info:eu-repo/grantAgreement/ES/MINECO/BES-2014-070480 info:eu-repo/grantAgreement/ES/MINECO/DPI2013-46979-C2-1-P info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 2.77 2016 ENGINEERING, INDUSTRIAL 8 / 44 = 0.182 2016 Q1 T1 OPERATIONS RESEARCH & MANAGEMENT SCIENCE 14 / 83 = 0.169 2016 Q1 T1 ENGINEERING, MANUFACTURING 12 / 44 = 0.273 2016 Q2 T1 1.383 2016 Control and Systems Engineering 2016 Q1 Software 2016 Q1 Industrial and Manufacturing Engineering 2016 Q1 Hardware and Architecture 2016 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion (orcid)0000-0003-4839-0610 Albajez García, José Antonio Universidad de Zaragoza (orcid)0000-0001-7316-0003 Santolaria Mazo, Jorge Universidad de Zaragoza 5002 515 Universidad de Zaragoza Dpto. Ingeniería Diseño Fabri. Área Ing. Procesos Fabricación 41 (2016), 277-286 J. manuf. syst. JOURNAL OF MANUFACTURING SYSTEMS 0278-6125 1374378 http://zaguan.unizar.es/record/63121/files/texto_completo.pdf Postprint 113758 http://zaguan.unizar.es/record/63121/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:63121 articulos driver 2020-02-21-13:15:33 ARTICLE