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Exploitation des études de capabilité dans le calculstatistique des tolérances géométriques de localisation

Published online by Cambridge University Press:  06 January 2012

Antoine S. Tahan  and
Sylvain Lévesque
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Abstract

L’article propose une méthodologie pour exploiter les mesures de capabilité des procédésde fabrication dans le calcul des tolérances de localisation d’un ensemble d’élémentsgéométriques selon les standards ISO 1101 et ASME Y14.5 avec une approche statistique. Lenombre d’éléments géométriques étudiés, les erreurs systématique et aléatoire du procédéde fabrication seront retenues et incluses dans l’approche. Un modèle mathématiqueexplicite est développé dans le but d’identifier les fonctions de distribution statistiquepour différents types de tolérances de localisation. À partir de ces distributions, nousprésentons une méthodologie servant à estimer les valeurs des tolérances qui permettent derencontrer un seuil de conformité prétabli, et vice versa. L’article présente égalementune série d’abaques permettant un usage industriel simple et commode. Plusieurs exemplesde calculs sont illustrés et un cas d’étude y est présenté.

Keywords

Tolérance géométriquetolérance statistiquetolérancement probabilistetolérance de localisationtolérance de positionindice de capabilitéGeometric tolerancestatistical tolerancingprobabilistic tolerancinglocalization toleranceposition tolerancecapability study
Type
Research Article
Information
Mechanics & Industry , Volume 12 , Issue 6 , 2011 , pp. 503 - 512
Copyright
© AFM, EDP Sciences 2011

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References

Références

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