NF EN ISO 286-1
Geometrical product specification (GPS) - ISO code system for tolerances of linear sizes - Part 1 : basis of tolerances, deviations and fits
ISO 286-1:2010 establishes the ISO code system for tolerances to be used for linear sizes of features of the following types: a) cylinder; b) two parallel opposite surfaces.ISO 286-1:2010 defines the basic concepts and the related terminology for this code system. It provides a standardized selection of tolerance classes for general purposes from amongst the numerous possibilities.Additionally, it defines the basic terminology for fits between two features of size without constraints of orientation and location and explains the principles of “basic hole” and “basic shaft”.
ISO 286-1:2010 establishes the ISO code system for tolerances to be used for linear sizes of features of the following types: a) cylinder; b) two parallel opposite surfaces.
ISO 286-1:2010 defines the basic concepts and the related terminology for this code system. It provides a standardized selection of tolerance classes for general purposes from amongst the numerous possibilities.
Additionally, it defines the basic terminology for fits between two features of size without constraints of orientation and location and explains the principles of “basic hole” and “basic shaft”.
- Avant-proposiv
- Introductionv
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1 Domaine d'application1
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2 Références normatives1
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3 Termes et définitions2
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3.1 Terminologie de base2
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3.2 Terminologie associée aux tolérances et aux écarts3
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3.3 Terminologie associée aux ajustements6
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3.4 Terminologie associée au système d'ajustement ISO9
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4 Système de codification ISO pour les tolérances sur les tailles linéaires11
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4.1 Concepts de base et désignations11
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4.2 Désignation de la classe de tolérance (règles d'écriture)13
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4.3 Détermination des écarts limites (règles de lecture)14
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4.4 Choix des classes de tolérance26
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5 Système ISO d'ajustement26
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5.1 Généralités26
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5.2 Généralités sur les ajustements27
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5.3 Détermination d'un ajustement27
- Annexe A (informative) Information supplémentaire sur le système ISO de limites et d'ajustement et ancienne pratique29
- Annexe B (informative) Exemples d'utilisation de l'ISO 286-1 pour déterminer les ajustements et classes de tolérance31
- Annexe C (informative) Relation avec la matrice GPS36
- Bibliographie38
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