1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Geometrical product specifications (GPS) Basic conceptsPart 4: Geometrical characteristics for quantifying GPS deviations (ISO 17450-4:2017)BS EN ISO 17450-4:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO
2、17450-4 January 2018 ICS 17.040.40 English Version Geometrical product specifications (GPS) - Basic concepts -Part 4: Geometrical characteristics for quantifying GPS deviations (ISO 17450-4:2017) Spcification gomtrique des produits (GPS) - Concepts gnraux - Partie 4: Caractristiques gomtriques pour
3、la quantification des carts GPS (ISO 17450-4:2017) Geometrische Produktspezifikation (GPS) - Grundlagen - Teil 4: Geometrische Merkmale zur Quantifizierung von GPS-Abweichungen (ISO 17450-4:2017) This European Standard was approved by CEN on 15 October 2017. CEN members are bound to comply with the
4、CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management
5、Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in 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
6、 the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Net
7、herlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 20
8、18 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 17450-4:2018 ENational forewordThis British Standard is the UK implementation of EN ISO 17450-4:2018. It is identical to ISO 17450-4:2017.The UK participation in its preparatio
9、n was entrusted to Technical Committee TDW/4, Technical Product Realization.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct
10、 application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 83260 4ICS 01.100.01; 17.040.40; 01.040.17; 17.040.01Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of
11、the Standards Policy and Strategy Committee on 28 February 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN ISO 17450-4:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17450-4 January 2018 ICS 17.040.40 English Version Geometrical product specif
12、ications (GPS) - Basic concepts -Part 4: Geometrical characteristics for quantifying GPS deviations (ISO 17450-4:2017) Spcification gomtrique des produits (GPS) - Concepts gnraux - Partie 4: Caractristiques gomtriques pour la quantification des carts GPS (ISO 17450-4:2017) Geometrische Produktspezif
13、ikation (GPS) - Grundlagen - Teil 4: Geometrische Merkmale zur Quantifizierung von GPS-Abweichungen (ISO 17450-4:2017) This European Standard was approved by CEN on 15 October 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving th
14、is European Standard the status of a national standard 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
15、versions (English, French, German). A version in 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 Aust
16、ria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spai
17、n, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CEN All rights of exploitation in any form and by any means reserved world
18、wide for CEN national Members. Ref. No. EN ISO 17450-4:2018 EBS EN ISO 17450-4:2018EN ISO 17450-4:2018 (E) 3 European foreword This document (EN ISO 17450-4:2018) has been prepared by Technical Committee ISO/TC 213 “Dimensional and geometrical product specifications and verification” in collaboratio
19、n with Technical Committee CEN/TC 290 “Dimensional and geometrical 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 b
20、y July 2018, and conflicting national standards shall be withdrawn at the latest by July 2018. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. Accord
21、ing to the CEN-CENELEC Internal Regulations, 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,
22、Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 17450-4:2017 has been approved by CEN as EN ISO 17
23、450-4:2018 without any modification. BS EN ISO 17450-4:2018ISO 17450-4:2017(E)Foreword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 14 Geometrical characteristic . 34.1 General . 34.2 Types of geometrical characteristic 5Annex A (informative) Relationship to the GPS m
24、atrix model .14Bibliography .15 ISO 2017 All rights reserved iiiContents PageBS EN ISO 17450-4:2018ISO 17450-4:2017(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Stand
25、ards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also ta
26、ke part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of 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 pa
27、rticular the different approval criteria needed for the different types of ISO documents should be noted. This document was 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
28、 this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent 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
29、www.iso.org/patents).Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement.For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as i
30、nformation about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.This document was prepared by Technical Committee is ISO/TC 213, Dimensional and geometrical product specifications and verif
31、ication, in collaboration with Technical Committee CEN/TC 290, Dimensional and geometrical product specification and verification.A list of all parts in the ISO 17450 series can be found on the ISO website.iv ISO 2017 All rights reservedBS EN ISO 17450-4:2018ISO 17450-4:2017(E)IntroductionThis docum
32、ent is a geometrical product specification (GPS) standard and is to be regarded as a general GPS standard (see ISO 14638). The rules and principles given in this document apply to all segments of the ISO GPS matrix which are indicated with a filled dot ().The ISO/GPS matrix model given in ISO 14638
33、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 to specifications made in accordance with this document, unless otherwise indicated.For more d
34、etailed information on the relationship of this document to other standards and to the GPS matrix model, see Annex A. ISO 2017 All rights reserved vBS EN ISO 17450-4:2018Geometrical product specifications (GPS) Basic concepts Part 4: Geometrical characteristics for quantifying GPS deviations1 ScopeT
35、his document specifies general rules for quantifying GPS deviations for individual GPS characteristics.NOTE GPS deviations can be local or global. A GPS characteristic defined from local GPS deviations is a parameter that transforms the set of local deviations into a global characteristic using a qu
36、antifying function (for more details, see Table 1).2 Normative referencesThe following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the la
37、test edition of the referenced document (including any amendments) applies.ISO 25378, Geometrical product specifications (GPS) Characteristics and conditions Definitions3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 25378 and the following apply.ISO
38、and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at https:/www.iso.org/obp3.1local geometrical deviationdP dPAn() (),local signed distance between a poin
39、t, P, of an input feature and a point of the reference featureNote 1 to entry: d(P) identifies any local geometrical deviation attached to any point (P) of the input feature.Note 2 to entry: A local geometrical deviation, dPAn(), can be located in an n-dimensional reference space, An, attached to th
40、e reference feature.Note 3 to entry: A local geometrical deviation exists in any point of the input feature (see Figure 1). Each local geometrical deviation of a point of the input feature can be represented in a reference space, An, by the abscises of its corresponding point of the reference featur
41、e and by the ordinate corresponding to the local geometrical deviation.Note 4 to entry: A local geometrical deviation can be described as an ordinate of a point of the variation curve whose abscises are defined in the reference space, An.Note 5 to entry: A local geometrical deviation is equal to zer
42、o when the deviated feature crosses the reference feature.INTERNATIONAL STANDARD ISO 17450-4:2017(E) ISO 2017 All rights reserved 1BS EN ISO 17450-4:2018ISO 17450-4:2017(E)Key1 deviated feature (input feature)2 reference feature3 local geometrical deviationP point of key 1 from which key 3 is define
43、dFigure 1 Local geometrical deviation3.2reference spaceAnspace defined by n curvilinear axes attached to a reference feature in which for each point of an input feature a local deviation is definedNote 1 to entry: n is equal to 1 for a reference line, or equal to 2 for a reference surface.3.2.1areal
44、 reference spaceA2reference space (3.2) when the reference feature is a surfaceNote 1 to entry: Reference space for a two-dimensional reference feature.3.2.2linear reference spaceA1reference space (3.2) when the reference feature is a lineNote 1 to entry: Reference space for a one-dimensional refere
45、nce feature.3.2.3two-directional reference spacecombination of two linear reference spaces (3.2.2) of the same linear reference feature whose vectors normal to any point P of the reference feature are orthogonal3.3quantifying functionmathematical function using the complete set of local deviations t
46、o define a geometrical characteristic as a quantityNote 1 to entry: A quantifying function can be a rank-order characteristic (3.4) (see Table 1).2 ISO 2017 All rights reservedBS EN ISO 17450-4:2018ISO 17450-4:2017(E)3.4rank-order characteristicgeometrical characteristic defined mathematically from
47、a set of local geometrical deviationsNote 1 to entry: A rank-order characteristic is defined from a quantifying function. Several kinds of rank-order characteristics exist. The formulae describing them are given in Table 1.3.4.1maximumcharacteristic maximum value of a set of local geometrical deviat
48、ionsNote 1 to entry: See Table 1.3.4.2minimumcharacteristic minimum value of a set of local geometrical deviationsNote 1 to entry: See Table 1.3.4.3averagecharacteristic average of a set of local geometrical deviationsNote 1 to entry: See Table 1.3.4.4mediancharacteristic median value of a set of lo
49、cal geometrical deviationsNote 1 to entry: The median value splits the population of local geometrical deviations into two equal portions (50 % above and 50 % below). Depending on the distribution of the population, the median value and the average value can be identical or different.Note 2 to entry: See Table 1.3.4.5mid-rangecharacteristic mean of the maximum (3.4.1) and the minimum (3.4.2)Note 1 to entry: See Table 1.3.4.6rangecharacteristic difference between the maximum (3.4.1) and the minimum (3.4.2)Note 1 to entry: Se
