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Title:Zagotavljanje ustrezne kakovosti meritev pri nadzoru proizvodnega procesa sestavnega dela kompresorja
Authors:ID Vraničar, Tilen (Author)
ID Ačko, Bojan (Mentor) More about this mentor... New window
ID Godina, Andrej (Comentor)
Files:.pdf MAG_Vranicar_Tilen_2012.pdf (5,84 MB)
MD5: 63C0C674F31A28D1E5E8BF34920FAC25
PID: 20.500.12556/dkum/33463533-6381-459b-b54b-691966a09802
 
Language:Slovenian
Work type:Master's thesis/paper
Typology:2.09 - Master's Thesis
Organization:FS - Faculty of Mechanical Engineering
Abstract:V prvi polovici predstavljenega magistrskega dela sta opisani teorija pogreškov ter merilna negotovost, druga pa najprej vsebuje opis obdelave cilindra na bloku kompresorja in način merjenja obravnavanih dimenzij oziroma oblik, čemur sledijo eksperimentalne meritve s pripadajočimi rezultati. Cilj magistrske naloge je, da z izvedbo eksperimentalnih meritev dokaže sprejemljivost postopka merjenja premera cilindra in merjenja valjnosti cilindra. Po predhodno določenem protokolu so se eksperimentalne meritve premera cilindra izvedle na pnevmatskem merilnem stroju Stotz, meritve valjnosti pa na merilnem stroju Hommel. Statistična obdelava podatkov je pokazala na slabo ponovljivost meritve kalibracijskih obročev naprave Stotz. Po teoriji je bila izračunana tudi skupna merilna negotovost meritve premera cilindra, izračun pa je pokazal, da s trenutnim načinom merjenja ne moremo z veliko verjetnostjo zagotavljati točnosti meritev. Sprejemljivost postopka meritve valjnosti je bila dokazana s primerjalnimi meritvami, in sicer smo valjnost istega cilindra izmerili na dveh različnih koordinatnih merilnih strojih Zeiss ter na obravnavanem merilnem stroju Hommel. Po primerjavi podatkov, dobljenih iz meritev, smo ugotovili, da je postopek meritve valjnosti na stroju Hommel sprejemljiv.
Keywords:merilna negotovost, standardni odmik, merilni pogrešek, meritev, premer, valjnost, krožnost, toleranca, pnevmatska merilna naprava
Place of publishing:Maribor
Publisher:[B. Ačko]
Year of publishing:2012
PID:20.500.12556/DKUM-36606-f483416c-ca35-4fad-4621-84f173b7dde9 New window
UDC:531.714.08:621.542(043.2)
COBISS.SI-ID:16970262 New window
NUK URN:URN:SI:UM:DK:UKXCBVWX
Publication date in DKUM:29.06.2012
Views:2242
Downloads:285
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FS
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Secondary language

Language:English
Title:ASSURANCE OF PROPER MEASUREMENT QUALITY IN CONTROLLING THE PRODUCTION PROCESS OF A COMPRESSOR COMPONENT
Abstract:In the first half of the M.A. thesis the theory of errors and measurement uncertainty are described. The second half contains a description of the treatement of the cylinder on the compressor block and the way of measuring the treated dimensions and shapes, followed by experimental measurements with the belonging results. The objective of the thesis is to prove the acceptability of the procedure of measuring the cylinder's diameter and measuring the cylinder's cylindricity. According to the previously determined protocol, experimental measurements of the cylinder’s diameter were carried out on the pneumatic measuring instrument Stotz, and the cylindricity measurements were carried out on the instrument Hommel. Statistical treatment of data showed a poor measurement repetition of the Stotz instrument’s calibration rings. The common measurement uncertainty of the cylinder’s diameter measurement was also calculated according to the theory, and the calculation showed that measurement accuracy cannot be guaranteed with the current way of measuring. Acceptability of the procedure of the cylindricity measurement was proven with comparative measurements – cylindricity of the same cylinder was measured on two different coordinate measuring instruments Zeiss and on the treated measuring instrument Hommel. After comparing the data gained with the measurements it was established that the procedure of the cylindricity measurement on the instrument Hommel is acceptable.
Keywords:measurement uncertainty, standard deviation, measuring error, measurement, diameter, cylindricity, roundness, tolerance, pneumatic measuring instrument


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