1、March 2017 English price group 13No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 17.040.40!%c+English version EN IS
2、O 18391:2016,English translation of DIN EN ISO 18391:2017-03Geometrische Produktspezifikation (GPS) Populationsspezifikation (ISO 18391:2016);Englische Fassung EN ISO 18391:2016,Englische bersetzung von DIN EN ISO 18391:2017-03Spcification gomtrique des produits (GPS) Spcification de population (ISO
3、 18391:2016);Version anglaise EN ISO 18391:2016,Traduction anglaise de DIN EN ISO 18391:2017-03www.beuth.deDocument comprises 25 pagesDTranslation by DIN-Sprachendienst.In case of doubt, the German-language original shall be considered authoritative.03.17 DIN EN ISO 18391:2017-03 2 A comma is used a
4、s the decimal marker. National foreword This document (EN ISO 18391:2016) 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 geometrical product specification
5、and verification” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was DIN-Normenausschuss Technische Grundlagen (DIN Standards Committee Technical Fundamentals), Working Committee NA 152-03-02 AA CEN/ISO Geometrische Produktspezifikation und prfung. The DIN Stan
6、dards corresponding to the International Standards referred to in this document are as follows: ISO 1101 DIN EN ISO 1101 ISO 3534 (all parts) DIN ISO 3534 (all parts) ISO 8015 DIN EN ISO 8015 ISO 14253-1 DIN EN ISO 14253-1 ISO 14405-1 DIN EN ISO 14405-1 ISO 14638 DIN EN ISO 14638 ISO 17450-1 DIN EN
7、ISO 17450-1 ISO 22514-1 DIN ISO 22514-1 DIN EN ISO 18391:2017-03 3 National Annex NA (informative) Bibliography DIN EN ISO 1101, Geometrical Product Specifications (GPS) Geometrical tolerancing Tolerances of form, orientation, location and run-out DIN EN ISO 8015, Geometrical product specifications
8、(GPS) Fundamentals Concepts, principles and rules DIN EN ISO 14253-1, Geometrical product specifications (GPS) Inspection by measurement of workpieces and measuring equipment Part 1: Decision rules for proving conformity or nonconformity with specifications DIN EN ISO 14405-1, Geometrical product sp
9、ecifications (GPS) Dimensional tolerancing Part 1: Linear sizes DIN EN ISO 14638, Geometrical Product Specifications (GPS) Matrix model DIN EN ISO 17450-1, Geometrical product specifications (GPS) General concepts Part 1: Model for geometrical specification and verification DIN ISO 3534 (all parts),
10、 Statistics Vocabulary and symbols DIN ISO 22514-1, Statistical methods in process management Capability and performance Part 1: General principles and concepts DIN EN ISO 18391:2017-03 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 18391 November 2016 IC
11、S 17.040.40 English Version Geometrical product specifications (GPS) - Population specification (ISO 18391:2016) Spcification gomtrique des produits (GPS) - Spcification de population (ISO 18391:2016) Geometrische Produktspezifikation (GPS) - Populationsspezifikation (ISO 18391:2016) This European S
12、tandard was approved by CEN on 28 August 2016. 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 standard without any alteration. Up-to-date lists and bibliographical references concerni
13、ng 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 any other language made by translation under the responsibility of a CEN member into i
14、ts 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 Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germ
15、any, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR
16、 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 18391:2016 EEuropean foreword 3Introduction 51 Scope . 62 Normative references 63 Terms and definiti
17、ons . 64 Rules for establishing a population specification 84.1 General . 84.2 Rules . 84.2.1 Rule 1: Description of a population specification 84.2.2 Rule 2: Description of type of individual GPS specification (univariate or multivariate) 104.2.3 Rule 3 125 Symbol used to specify a population speci
18、fication 136 Rules for indicating a population specification 16Annex A (informative) Relation in the GPS matrix model .20Bibliography .21Contents PageDIN EN ISO 18391:2017-03 EN ISO 18391:2016 (E) 2Foreword 4European foreword This document (EN ISO 18391:2016) has been prepared by Technical Committee
19、 ISO/TC 213 “Dimensional and geometrical product specifications and verification” in collaboration 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
20、 national standard, either by publication of an identical text or by endorsement, at the latest by May 2017, and conflicting national standards shall be withdrawn at the latest by May 2017. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
21、rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croati
22、a, 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
23、 United Kingdom. Endorsement notice The text of ISO 18391:2016 has been approved by CEN as EN ISO 18391:2016 without any modification. DIN EN ISO 18391:2017-03 EN ISO 18391:2016 (E)3 ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodi
24、es (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 technical committee has been established has the right to be represented on that committee. International organizations
25、, 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 electrotechnical standardization.The procedures used to develop this document and those intended for its further m
26、aintenance 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 was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2. www.iso.org/directivesAttenti
27、on 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 patent rights. Details of any patent rights identified during the development of the document will be in the Introduction a
28、nd/or on the ISO list of patent declarations received. www.iso.org/patentsAny 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 meaning of ISO specific terms and expressions related to conformity assess
29、ment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT), see the following URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 213, Dimensional and geometrical product specifications and verification.
30、DIN EN ISO 18391:2017-03 EN ISO 18391:2016 (E) 4 IntroductionThis International Standard is a Geometrical Product Specification (GPS) standard and is to be regarded as a global GPS standard (see ISO 14638). It influences all chain links of all chains of standards.The ISO/GPS Masterplan given in ISO
31、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 to specifications made in accordance with this document, unless otherwise indicated. For
32、 more detailed information on the relationship of this International standard to other standards and to the GPS matrix model, see Annex A.In order to define the permissible interval for a geometrical characteristic, the designer only defines a condition (a unilateral tolerance limit or a bilateral p
33、air of tolerance limits) for each workpiece, by considering the worst case impact in an assembly.But when the tolerancing is based on a set of hypotheses about the population of the workpieces, one or more additional requirements should be added to verify these hypotheses.NOTE The intent of this Int
34、ernational Standard is not to define calculation methods to determine tolerances, but to give the means to express the hypotheses to verify.DIN EN ISO 18391:2017-03 EN ISO 18391:2016 (E)5 1 ScopeThis International Standard defines rules to establish and to indicate population specifications, which a
35、re used to specify conditions on population characteristics, which are established from a set of characteristic values obtained one on each workpiece of a population of workpieces.A population specification (as applied to a population of workpieces considered as a collection and not as individual it
36、ems) can be seen as a complementary requirement to the individual specification (as applied to each workpiece considered as individual items). Population specifications express the statistical hypotheses used on the population of workpieces.NOTE 1 A population specification is a complement to an ind
37、ividual GPS specification.NOTE 2 This International Standard is not intended to mandate a given tolerancing method or how to calculate tolerance values. Its intent is to specify tools to allow the expression of population specifications.2 Normative referencesThe following documents, in whole or in p
38、art, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 1101, Geometrical product specifications (GPS
39、) Geometrical tolerancing Tolerances of form, orientation, location and run-outISO 14405-1, Geometrical product specifications (GPS) Dimensional tolerancing Part 1: Linear sizesISO 17450-1, Geometrical product specifications (GPS) General concepts Part 1: Model for geometrical specification and veri
40、fication3 Terms and definitionsFor the purposes of this document, the terms and definitions given in ISO 17450-1 and the following apply.3.1population characteristicstatistic defined from the characteristic values, obtained on the population of workpieces or the population of assembliesNote 1 to ent
41、ry: Population characteristics are used to consider the population of workpieces.Note 2 to entry: Population characteristics are only statistically meaningful when the values are based upon global individual characteristics, see Example 2.EXAMPLE 1 The arithmetic mean and the standard deviation of a
42、 global individual characteristic on the population of workpieces, are population characteristics.DIN EN ISO 18391:2017-03 EN ISO 18391:2016 (E) 6 EXAMPLE 2 The minimum circumscribed diameter has one unique value for a given cylindrical feature. Therefore a population characteristic based on this in
43、dividual characteristic value will be statistically meaningful. The two-point diameter for a given cylindrical feature will vary within a range, dependent upon the form deviations of the feature. In this case, one population characteristic for two-point diameter cannot be defined from the population
44、 of values. However, it is possible to establish a population characteristic from the maximum two point diameter along the geometric feature, which is a global individual characteristic, together with a population characteristic from the minimum two-point diameter along the geometric feature which i
45、s another global individual characteristic.3.2population conditionlimit that applies to the population characteristic valueNote 1 to entry: Population conditions can be used for statistical process control (SPC).EXAMPLE The mean value, null, of the minimum circumscribed diameter of a population of w
46、orkpieces can be considered as a population characteristic, and required to be less than or equal to 10,1, which is a population condition (see Clause 6).3.3statisticcompletely specified function of random variablesSOURCE: ISO 3534-1:2006, definition 1.8, modified Notes have not been reproduced.Note
47、 1 to entry: In GPS, the random variables, which are used are in most of cases one-dimensional (scalar). Multi-dimensional (vector) variables also exist.Note 2 to entry: For a population or a sample of individual characteristic values, at least one statistic can be applied. In GPS, a statistic can b
48、e used on a population of local individual characteristic values taken on one workpiece or, on a population of global individual characteristic values taken on a population of workpieces.EXAMPLE See Table 1. More information can be found in ISO 3534- series.Table 1 Non exhaustive list of population statisticsaDescription of the statistic Mathematical description according to ISO 35341bA) Minimum minimum (X)B) Maximum maxim
