1、BS EN ISO 17450-3:2016Geometrical productspecifications (GPS) GeneralconceptsPart 3: Toleranced features(ISO 17450-3:2016)BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06BS EN ISO 17450-3:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implement
2、ation of EN ISO17450-3:2016. It supersedes BS EN ISO 14660-2:2000 which iswithdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee TDW/4, Technical Product Realization.A list of organizations represented on this committee can beobtained on request to its secretary.This p
3、ublication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 80930 9ICS 01.040.17; 01.100.01; 17.040.01Compliance with a British Standar
4、d cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 July 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 1745
5、0-3 June 2016 ICS 17.040.01 English Version Geometrical product specifications (GPS) - General concepts - Part 3: Toleranced features (ISO 17450-3:2016)Spcification gomtrique des produits (GPS) - Concepts gnraux - Partie 3: lments tolrancs (ISO 17450-3:2016) Geometrische Produktspezifikation (GPS) -
6、 Grundlagen - Teil 3: Tolerierte Geometrieelemente (ISO 17450-3:2016) This European Standard was approved by CEN on 19 December 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national st
7、andard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in
8、 any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech R
9、epublic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROP
10、EAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 17450-3:2016
11、EBS EN ISO 17450-3:2016EN ISO 17450-3:2016 (E) 3 European foreword This document (EN ISO 17450-3:2016) has been prepared by Technical Committee ISO/TC 213 “Dimensional and geometrical product specifications and verification“ in collaboration with Technical Committee CEN/TC 290 “Dimensional and geome
12、trical product specification and verification” the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by December 2016, and conflicting national standards shall be
13、 withdrawn at the latest by December 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Regul
14、ations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, It
15、aly, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 17450-3:2016 has been approved by CEN as EN ISO 17450-3:2016 without any modification. BS EN IS
16、O 17450-3:2016ISO 17450-3:2016(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 General 25 Default rules for establishing geometrical features 55.1 General . 55.2 Integral feature . 65.2.1 General 65.2.2 Extracted integral line . 65.2.3 Extracted integral po
17、int . 65.2.4 Opposing point pair . 65.3 Median feature 95.3.1 General 95.3.2 Median point 125.3.3 Median line 155.3.4 Median surface .16Annex A (informative) Relation in the GPS matrix model .18Bibliography .19 ISO 2016 All rights reserved iiiContents PageBS EN ISO 17450-3:2016ISO 17450-3:2016(E)For
18、ewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a techn
19、ical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
20、electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document w
21、as drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such pat
22、ent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not
23、constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the following URL: Foreword - Supplementary informationTh
24、e committee responsible for this document is ISO/TC 213, Dimensional and geometrical product specifications and verifications.This first edition of ISO 17450-3 cancels and replaces ISO 14660-2:1999, which has been technically revised.ISO 17450 consists of the following parts, under the general title
25、 Geometrical product specification (GPS) General concepts : Part 1: Model for geometrical specification and verification Part 2: Basic tenets, specifications, operators, uncertainties and ambiguities Part 3: Toleranced features Part 4: Geometrical characteristics for quantifying form, orientation, l
26、ocation and run-out deviationsiv ISO 2016 All rights reservedBS EN ISO 17450-3:2016ISO 17450-3:2016(E)IntroductionThis part of ISO 17450 is a geometrical product specifications (GPS) standard and is to be regarded as a fundamental GPS standard (see ISO 14638). It influences all chain links of all ch
27、ains of standards in the general GPS matrix model.The ISO/GPS matrix model given in ISO 14638 gives an overview of the ISO/GPS system of which this document is a part. The fundamental rules of ISO/GPS given in ISO 8015 apply to this document and the default decision rules given in ISO 14253-1 apply
28、to specifications made in accordance with this document, unless otherwise indicated.For more detailed information of the relation of this part of ISO 17450 to the GPS matrix model, see Annex A. ISO 2016 All rights reserved vBS EN ISO 17450-3:2016BS EN ISO 17450-3:2016Geometrical product specificatio
29、ns (GPS) General concepts Part 3: Toleranced features1 ScopeThis part of ISO 17450 gives default definitions for the extracted features (integral or derived) of workpieces, which are toleranced features in GPS specifications (dimensional, geometrical, or surface texture specifications). This part of
30、 ISO 17450 defines default geometrical features used to define GPS characteristics.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For unda
31、ted references, the latest edition of the referenced document (including any amendments) applies.ISO 17450-1, Geometrical product specifications (GPS) General concepts Part 1: Model for geometrical specification and verificationISO 22432, Geometrical product specifications (GPS) Features utilized in
32、 specification and verificationISO 25378, Geometrical product specification (GPS) Characteristics and conditions Definitions3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 17450-1, ISO 22432, ISO 25378 and the following apply.3.1opposing point paircol
33、lection of two points established simultaneously, the separation of which is a local size of a feature of sizeNote 1 to entry: The distance between the two points constituting an opposing point pair is a two point size (see ISO 14405-1).Note 2 to entry: In the case of a feature of size defined as “t
34、wo opposed planes”, the median point of the two points constituting an extracted opposing point pair belongs to its median extracted surface.3.2elementary toleranced featuresmallest part of a complete geometrical feature for which a GPS characteristic is definedEXAMPLE 1 For an unrestricted flatness
35、 specification, a global GPS characteristic is defined for the complete integral feature, which in this case is an elementary toleranced feature.EXAMPLE 2 For a straightness specification, a local GPS characteristic may be defined for each line feature in a given direction in the complete integral f
36、eature. Each of these line features is the intersection between a planar feature and the complete integral feature and is an elementary toleranced feature. The complete integral feature is the toleranced feature.INTERNATIONAL STANDARD ISO 17450-3:2016(E) ISO 2016 All rights reserved 1BS EN ISO 17450
37、-3:2016ISO 17450-3:2016(E)3.3toleranced featurecomplete toleranced featureset of one or more geometrical features, for which a GPS characteristic is defined or a collection of elementary toleranced featuresNote 1 to entry: “Toleranced feature” without a qualifier is a complete feature, not an elemen
38、tary feature.Note 2 to entry: A toleranced feature is a set of geometrical features on which a GPS specification is defined.3.4median centrecentre point calculated as the centre of an opposing point pairNote 1 to entry: A centre of an associated sphere is a directly associated median point (see ISO
39、22432 and 5.3.2.1) and not a median centre.4 GeneralA GPS characteristic (see ISO 25378) is a basic characteristic (an intrinsic characteristic or a location or an orientation situation characteristic). The size of a deviated feature (see ISO 22432), which is nominally a feature of size is an intrin
40、sic characteristic (see ISO 17450-1), which is used for dimensional specification (see ISO 14405). The value calculated from the local distances between a deviated feature and a reference feature (see ISO 22432) is a situation characteristic (see ISO 17450-1), which is used for geometrical specifica
41、tion (see ISO 1101) or for surface texture characteristic (see ISO 25378 and ISO 1302).A deviated feature is obtained from an input feature (see ISO 25378) by using or not using the operation of filtration and/or association.By default, the input integral feature is defined by an extraction of an in
42、finite number of points from the real feature. In verification, the extracted integral feature does not contain an infinite number of points.By default, the input feature is a single feature, see ISO 22432.By default, a boundary belongs to both adjacent single extracted integral features.If the comp
43、lete extracted integral feature is a line, then the complete extracted line is defined by the intersection of the complete extracted integral surface feature with an intersection feature.The intersection plane is a full plane (see Figure 1 and Figure 2) or a half plane (see Figure 3). The intersecti
44、on plane can be explicitly or implicitly defined by GPS specification with or without a specific location. When the intersection has no specific location, then it belongs to a set of planes containing an axis or a set of parallel planes or a set of planes oriented from an associated feature.2 ISO 20
45、16 All rights reservedBS EN ISO 17450-3:2016ISO 17450-3:2016(E)Key1 tolerance feature: complete extracted feature2 associated feature3 intersection plane which is established parallel to the associated surface4 elementary toleranced feature: complete extracted section lineFigure 1 Example of interse
46、ction plane used to establish an elementary toleranced featureKey1 complete extracted feature2 associated feature3 situation feature of the associated feature (in this case, its axis)4 elementary toleranced feature: complete extracted section line5 intersection plane perpendicular to the axis of the
47、 associated featureFigure 2 Example of intersection plane constrained in orientation used to establish an elementary toleranced feature ISO 2016 All rights reserved 3BS EN ISO 17450-3:2016ISO 17450-3:2016(E)Key1 toleranced feature: complete extracted feature2 associated feature3 situation feature of
48、 the associated feature (in this case, its axis)4 intersection plane including the situation feature of the associated feature5 elementary toleranced feature: complete extracted section lineFigure 3 Example of intersection plane, as a half plane, used to establish an elementary toleranced featureIf
49、the input feature is a restricted feature, then its boundaries are defined from the single features boundaries with other features. The nominal location of the boundaries of the restricted feature shall be given in the specification. To identify a location intrinsically defined on a single integral feature, a primary datum is defined from the single integral feature. The location is defined from this primary datum.To identify a location on a single integral feature defined in a given distance from an adjacent feature, a p
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