1、April 2012 Translation by DIN-Sprachendienst.English price group 24No 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
2、17.040.30!$C8“1883221www.din.deDDIN EN ISO 17450-1Geometrical product specifications (GPS) General concepts Part 1: Model for geometrical specification and verification(ISO 17450-1:2011)English translation of DIN EN ISO 17450-1:2012-04Geometrische Produktspezifikation (GPS) Grundlagen Teil 1: Modell
3、 fr die geometrische Spezifikation und Prfung (ISO 17450-1:2011)Englische bersetzung von DIN EN ISO 17450-1:2012-04Spcification gomtrique des produits (GPS) Concepts gnraux Partie 1: Modle pour la spcification et la vrification gomtriques (ISO 17450-1:2011)Traduction anglaise de DIN EN ISO 17450-1:2
4、012-04SupersedesDIN ISO/TS 17450-1:2008-04andDIN ISO/TS 17450-1Corrigendum 1:2009-08www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.03.1269DIN EN ISO 17450-1:2012-04 2 A comma is used as the decimal marker. National foreword This s
5、tandard has been prepared by Technical Committee ISO/TC 213/WG 14 “Vertical GPS principles” in collaboration with Technical Committee CEN/TC 290 “Dimensional and geometrical product specification and verification” (Secretariat: AFNOR, France). The responsible German body involved in its preparation
6、was the Normenausschuss Technische Grundlagen (Fundamental Technical Standards Committee), Working Committee NA 152-03-02 AA CEN/ISO Geometrische Produktspezifikation und -prfung. The German/English publication corresponding to the International Standard referred to in this document is as follows: I
7、SO/IEC Guide 99 International vocabulary of metrology Basic and general concepts and associated terms (VIM) Amendments This standard differs from DIN ISO/TS 17450-1:2008-04 and DIN ISO/TS 17450-1 Corrigendum 1:2009-08 as follows: a) the standard has been adopted as a European Standard and editoriall
8、y revised; b) the normative references have been updated; c) the standard has been fully revised. Previous editions DIN ISO/TS 17450-1: 2008-04 DIN ISO/TS 17450-1 Corrigendum 1: 2009-08 National Annex NA (informative) Bibliography International vocabulary of metrology Basic and general concepts and
9、associated terms (VIM) _ 1) Obtainable from: Beuth Verlag GmbH, 10772 Berlin, Germany, ISBN 978-3-4-410-22472-3. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 17450-1 December 2011 ICS 17.040.01 Supersedes CEN ISO/TS 17450-1:2007English Version Geometrical product specifications (GPS) - G
10、eneral concepts - Part 1: Model for geometrical specification and verification (ISO 17450-1:2011) Spcification gomtrique des produits (GPS) - Concepts gnraux - Partie 1: Modle pour la spcification et la vrification gomtriques (ISO 17450-1:2011) Geometrische Produktspezifikation (GPS) - Grundlagen -
11、Teil 1: Modell fr die geometrische Spezifikation und Prfung (ISO 17450-1:2011) This European Standard was approved by CEN on 10 December 2011. 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 na
12、tional 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 versions (English, French, German). A v
13、ersion 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 Austria, Belgium, Bulgaria, Croatia, Cyprus
14、, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMI
15、T EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 17450-1:2011: EContents Page Foreword . 3 Introduction . 4 1 Sc
16、ope 5 2 Normative references 5 3 Terms and definitions . 5 4 Application and future prospects 15 5 General . 15 6 Features 16 6.1 General . 16 6.2 Ideal features . 17 6.3 Non-ideal features . 19 6.4 Relationships between geometrical feature terms 20 7 Characteristics . 22 7.1 General . 22 7.2 Intrin
17、sic characteristics of ideal features . 22 7.3 Situation characteristics between ideal features . 23 7.4 Situation characteristics between non-ideal and ideal features 24 8 Operations 25 8.1 Feature operations 25 8.2 Evaluation 29 8.3 Transformation 30 9 Specification 30 9.1 General . 30 9.2 Specifi
18、cation by dimension 30 9.3 Specification by zone 31 9.4 Deviation 31 10 Verification . 32 Annex A (informative) Examples of applications to ISO 1101 33 Annex B (informative) Mathematical symbols and definitions . 47 Annex C (informative) Comparison between tolerancing and metrology . 59 Annex D (inf
19、ormative) Concept diagram for characteristics 61 Annex E (informative) Invariance classes 62 Annex F (informative) Relationship to the GPS matrix model 64 Bibliography 66 Alphabetical index 67 EN ISO 17450-1:2011 (E) DINEN ISO 17450-1:2012-042Foreword This document (EN ISO 17450-1:2011) has been pre
20、pared 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 and verification” the secretariat of which is held by AFNOR. This European Standard sh
21、all be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by June 2012, and conflicting national standards shall be withdrawn at the latest by June 2012. Attention is drawn to the possibility that some of the elements of this document
22、 may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes CEN ISO/TS 17450-1:2007. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries a
23、re bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, S
24、pain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 17450-1:2011 has been approved by CEN as a EN ISO 17450-1:2011 without any modification. EN ISO 17450-1:2011 (E) DINEN ISO 17450-1:2012-043 Introduction This part of ISO 17450 is a geometrical product specification
25、(GPS) document and is to be regarded as a global GPS document (see ISO/TR 14638). It influences all chain links of the chains of standards. The ISO/GPS Masterplan given in ISO/TR 14638 gives an overview of the ISO/GPS system of which this document is a part. The fundamental rules of ISO/GPS given in
26、 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 detailed information on the relationship of this part of ISO 17450 to other standards and to the GPS matrix model,
27、see Annex F. In a market environment of increased globalization, the exchange of technical product information is of high importance and the need to express unambiguously the geometry of mechanical workpieces of vital urgency. Consequently, codification associated with the macro- and micro-geometry
28、of workpiece specifications needs to be unambiguous and complete if the functional geometrical variation of parts is to be limited; in addition, the language ought to be applicable to CAx systems. The aim of ISO/TC 213 is to provide the tools for a global and “top-down” approach to GPS. These tools
29、form the basis of new standards specifying a common language for geometrical definition. This language can be used by design (assemblies and individual workpieces), manufacturing and inspection, to describe the measurement procedure, regardless of the media (e.g. a paper drawing, numerical drawing o
30、r exchange file) used. The tools are based on the characteristics of features, as well as on the constraints between the features and on feature operations, used for the creation of different geometrical features. EN ISO 17450-1:2011 (E) DINEN ISO 17450-1:2012-0441 Scope This part of ISO 17450 provi
31、des a model for geometrical specification and verification and defines the corresponding concepts. It also explains the mathematical basis of the concepts associated with the model and defines general terms for geometrical features of workpieces. This part of ISO 17450 defines the fundamental concep
32、ts for the GPS system in order to: provide nonambiguous GPS language to be used in design, manufacturing and verification, identify features, characteristics and rules to provide the basis for specifications, provide a complete symbology language to indicate GPS specifications, provide simplified sy
33、mbology by defining default rules, and provide consistent rules for verification. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the
34、referenced document (including any amendments) applies. ISO/IEC Guide 99, International vocabulary of metrology Basic and general concepts and associated terms (VIM) 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO/IEC Guide 99 and the following apply
35、. 3.1 real surface of a workpiece set of features which physically exist and separate the entire workpiece from the surrounding medium EN ISO 17450-1:2011 (E) DINEN ISO 17450-1:2012-045 3.2 surface model model representing the set of physical limits of the virtual or the real workpiece NOTE 1 This m
36、odel applies to all closed surfaces. NOTE 2 The surface model allows the definition of single features, sets of features, and/or portions of features. The total product is modelled by a set of surface models corresponding to each workpiece. 3.2.1 nominal model of a workpiece model of the perfect sha
37、pe defined by the designer NOTE The nominal model represents the design intent. 3.2.2 non-ideal surface model skin model of a workpiece model of the physical interface of the workpiece with its environment NOTE See Clause 5. 3.3 geometrical feature point, line, surface, volume or a set of these item
38、s NOTE 1 The non-ideal surface model is a particular type of geometrical feature, corresponding to the infinite set of points defining the interface between the workpiece and its surroundings. NOTE 2 A geometrical feature can be an ideal feature or a non-ideal feature, and can be considered as eithe
39、r a single feature or a compound feature. 3.3.1 ideal feature feature defined by a parametrized equation NOTE 1 The expression of the parametrized equation depends on the type of ideal feature and on its intrinsic characteristics. NOTE 2 By default, an ideal feature is infinite. To change its nature
40、, it is appropriate to specify this by adding the term “restricted” as in “restricted ideal feature”. 3.3.1.1 attribute of an ideal feature property intrinsically attached to an ideal element NOTE 1 Four levels of attributes can be defined for an ideal feature: 1) shape; 2) dimensional parameters fr
41、om which a size can be defined in the case of dimensional feature; 3) situation feature; and 4) skeleton (when the size is set equal to zero). NOTE 2 If the ideal feature is a feature of size, then one of parameters of the shape can be considered as a size. 3.3.1.1.1 dimensional parameter linear or
42、angular dimension of an ideal feature used in the expression of its parametrized equation NOTE A dimensional parameter can correspond to a size of a feature of size. 3.3.1.1.2 skeleton feature geometrical feature resulting from the reduction of a feature of size when its size is set equal to zero EN
43、 ISO 17450-1:2011 (E) DINEN ISO 17450-1:2012-046NOTE 1 In the nominal model, the skeleton feature is a geometrical attribute of a nominal integral feature. A nominal integral feature and its skeleton belong to the same invariance class and have the same situation feature. NOTE 2 In the non-ideal fea
44、ture, several possible skeleton features exist for the same integral feature. EXAMPLE In case of a torus, there are two dimensional parameters, one of which is a size (the small diameter of the torus). Its skeleton is a circle; its situation features are a plane (containing the circle) and a point (
45、centre of the circle). 3.3.1.1.3 situation feature point, straight line, plane or helix, from which the location and/or orientation of a geometrical feature can be defined See Figures 1 to 4. NOTE 1 A situation feature is a geometrical attribute of an ideal feature. NOTE 2 No dimensional parameters
46、are linked to a situation feature. NOTE 3 In many cases, instead of using the situation helix, the axis of a situation helix is used. EXAMPLE In the case of a torus, there are two dimensional parameters, one of which is a size (the small diameter of the torus). Its skeleton is a circle and its situa
47、tion features are a plane (containing the circle) and a point (centre of the circle). a) Situation point for a sphere b) Situation point for a cone Figure 1 Example of situation points a) Situation straight line for a cylinder b) Situation straight line for a cone Figure 2 Example of situation strai
48、ght lines EN ISO 17450-1:2011 (E) DINEN ISO 17450-1:2012-047 a) Situation plane for a plane pair b) Situation plane for a cone c) Situation plane for two non-parallel planes Figure 3 Examples of situation planes Figure 4 Example of a situation helix 3.3.1.1.4 shape of an ideal feature mathematical generic description defining the ideal geometry of a feature NOTE An ideal feature of preset shape can be qualified or named. EXAMPLE 1 Planar shape, cylindrical shape, spherical shape, conical shape. EXAMPLE 2 A surface can be qualified as a “plane surface” or be
