1、December 2011 Translation by DIN-Sprachendienst.English price group 23No 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).I
2、CS 17.040.30!$xX“1855357www.din.deDDIN EN ISO 25378Geometrical product specifications (GPS) Characteristics and conditions Definitions (ISO 25378:2011)English translation of DIN EN ISO 25378:2011-12Geometrische Produktspezifikation (GPS) Merkmale und Bedingungen Begriffe (ISO 25378:2011)Englische be
3、rsetzung von DIN EN ISO 25378:2011-12Spcification gomtrique des produits Caractristiques et conditions Dfinitions (ISO 25378:2011)Traduction anglaise de DIN EN ISO 25378:2011-12www.beuth.deDocument comprises pagesIn case of doubt, the German-language original shall be considered authoritative.6411.1
4、1 DIN EN ISO 25378:2011-12 2 A comma is used as the decimal marker. National foreword This standard 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 geometri
5、cal product specification and verification” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was the Normenausschuss Technische Grundlagen (Fundamental Technical Standards Committee), Working Committee NA 152-03-02 AA CEN/ISO Geometrische Produktspezifikation und
6、 -prfung. The DIN Standards corresponding to the International Standards and publications referred to in this document are as follows: ISO 3534-1 DIN ISO 3534-1 ISO 3534-2 E DIN ISO 3534-2 ISO 9000 DIN EN ISO 9000 ISO/TR 14638 DIN V 32950 ISO/TS 17450-1 E DIN EN ISO 17450-1 ISO/TS 17450-2 E DIN EN I
7、SO 17450-2 ISO 22432 E DIN EN ISO 22432 National Annex NA (informative) Bibliography DIN V 32950, Geometrical product specification (GPS) Masterplan DIN ISO 3534-1, Statistics Vocabulary and symbols Part 1: General statistical terms and terms used in probability E DIN ISO 3534-2, Statistics Vocabula
8、ry and symbols Part 2: Applied statistics DIN EN ISO 9000, Quality management systems Fundamentals and vocabulary E DIN EN ISO 17450-1, Geometrical product specifications (GPS) General concepts Part 1: Model for geometrical specification and verification E DIN EN ISO 17450-2, Geometrical product spe
9、cifications (GPS) General concepts Part 2: Basic tenets, specifications, operators and uncertainties E DIN EN ISO 22432, Geometrical product specifications (GPS) Features utilized in specification and verification EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 25378 April 2011 ICS 17.040.0
10、1 English Version Geometrical product specifications (GPS) - Characteristics and conditions - Definitions (ISO 25378:2011) Spcification gomtrique des produits - Caractristiques et conditions - Dfinitions (ISO 25378:2011) Geometrische Produktspezifikation (GPS) - Merkmale und Bedingungen - Begriffe (
11、ISO 25378:2011) This European Standard was approved by CEN on 7 August 2010. 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 bibli
12、ographical 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 any other language made by translation under the respons
13、ibility 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 Republic, Denmark, Estonia, Finland, France, Germany, Gree
14、ce, 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 COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Manageme
15、nt 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 25378:2011: EContents Page Foreword .3 Introduction.4 1 Scope5 2 Normative references5 3 Terms and definitions .6 4 General prese
16、ntation.19 4.1 General principles of the specifications .19 4.2 General principle of the characteristics19 5 Illustration of GPS characteristics.20 5.1 General .20 5.2 Single and relationship characteristics 21 5.3 Local and global characteristics24 5.4 Deviated and reference feature24 5.5 Independe
17、nt characteristics.25 5.6 Zone characteristic34 5.7 Gauge characteristic.38 5.8 Assembly or sub-assembly characteristic .43 6 Relations between terms related to characteristic 48 Annex A (informative) Overview diagrams.50 Annex B (normative) Basic (geometrical) characteristic53 Annex C (informative)
18、 Relation to the GPS matrix model.61 Bibliography62 EN ISO 25378:2011 (E) DIN EN ISO 25378:2011-12 2Foreword This document (EN ISO 25378:2011) has been prepared by Technical Committee ISO/TC 213 “Dimensional and geometrical product specifications and verification“ in collaboration with Technical Com
19、mittee 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 by October 2011, and
20、conflicting national standards shall be withdrawn at the latest by October 2011. 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. Accor
21、ding 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, France, Germany, Greece, Hungary, Iceland, Ireland, Ita
22、ly, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 25378:2011 has been approved by CEN as a EN ISO 25378:2011 without any modification. EN ISO 25378:2011 (
23、E) DIN EN ISO 25378:2011-123 Introduction This International Standard is a Geometrical product specifications (GPS) standard and is to be regarded as a global GPS standard (see ISO/TR 14638). It influences all chain links of all chains of standards in the general GPS matrix. To facilitate the readin
24、g and the understanding of this International Standard, it is essential to refer to ISO 17450-1 and ISO/TS 17450-2. Geometrical characteristics exist in three “worlds”: the world of nominal geometrical definition, where an ideal representation of the future workpiece is defined by the designer; the
25、world of specification, where several representations of the future workpiece are imagined by the designer; the world of verification, where one or several representations of a given workpiece are identified in the application of measuring procedure(s). A GPS specification defines requirements throu
26、gh a geometrical characteristic and condition. In the world of verification, mathematical operations can be distinguished from physical operations. The physical operations are the operations based on physical procedures; they are generally mechanical, optical or electromagnetic. The mathematical ope
27、rations are mathematical treatments of the sampling of the workpiece. This treatment is generally achieved by computing or electronic treatment. It is important to understand the relationship between these three worlds. These specifications, characteristics and conditions, generically defined in thi
28、s International Standard, are well suited to define requirements of rigid parts and assemblies and can also be applied to non-rigid parts and assemblies. EN ISO 25378:2011 (E) DIN EN ISO 25378:2011-12 41 Scope This International Standard defines general terms for geometrical specifications, characte
29、ristics and conditions. These definitions are based on concepts developed in ISO 17450-1 and ISO 22432 and they are given by using a mathematical description based on Annex B of ISO 17450-1:2011. This International Standard is not intended for industrial use as such among designers, but is aimed to
30、serve as the “road map” mapping out the requirements based on geometrical features, thus enabling future standardization for industry and software makers in a consistent manner. This International Standard defines general types of geometrical characteristics and conditions which can be used in GPS.
31、These descriptions are applicable to a workpiece, an assembly, a population of workpieces, and a population of assemblies. These definitions are based on concepts of operators and the duality principle contained in ISO 17450-1 and ISO/TS 17450-2 and on the description of types of geometrical feature
32、s defined in ISO 22432. Conceptually, these specification operators can be used as specification operators or as verification operators (duality principle). This International Standard is not intended to define GPS specifications, symbology or other types of expression. 2 Normative references The fo
33、llowing 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 referenced document (including any amendments) applies. ISO 3534-1:2006, Statistics Vocabulary and symbols Part
34、 1: General statistical terms and terms used in probability ISO 3534-2, Statistics Vocabulary and symbols Part 2: Applied statistics ISO 17450-1:2011, Geometrical product specifications (GPS) General concepts Part 1: Model for geometrical specification and verification ISO/TS 17450-2, Geometrical pr
35、oduct specifications (GPS) General concepts Part 2: Basic tenets, specifications, operators and uncertainties EN ISO 25378:2011 (E) DIN EN ISO 25378:2011-125 ISO 224321), Geometrical product specifications (GPS) Features utilized in specification and verification 3 Terms and definitions For the purp
36、oses of this document, the terms and definitions given in ISO 3534-1, ISO 3534-2 and ISO 17450-1 and the following apply. 3.1 geometrical specification expression of a set of one or more conditions on one or more geometrical characteristics NOTE 1 A specification can express a combination of individ
37、ual conditions on an individual characteristic or a population condition on a population characteristic. NOTE 2 A specification consists of one or more single specifications. These single specifications can be individual specifications, population specifications or any combination. 3.2 condition com
38、bination of a limit value and a binary relational mathematical operator EXAMPLE 1 “be less than or equal to 6,3”, the expression of this condition can be, for instance: 6,3 max or U 6,3. Mathematically: let X be the considered value of the characteristic, the condition is X u 6,3. EXAMPLE 2 “be grea
39、ter than or equal to 0,8”, the expression of this condition can be, for instance: 0,8 min or L 0,8. Mathematically: let X be the considered value of the characteristic, the condition is 0,8 u X. EXAMPLE 3 a set of two complementary conditions (lower and upper limits) can be expressed through, for in
40、stance: 10,2 9,8, 9,80,40+, 10 0,2, or 9,90,30,1+. Mathematically: let X be the considered value of the characteristic, the condition is 9,8 u X u 10,2. EXAMPLE 4 “be less than or equal to R, R being given by a function, R = (X 2+ Y 2) 0,85, X and Y being the ordinates of the coordinate system. NOTE
41、 1 A binary relational mathematical operator is a mathematical concept which generalizes the notion as “greater than or equal to” in arithmetic, or “is item of the set” in set theory. NOTE 2 The limit value can be defined for any individual workpiece or for populations of workpieces. NOTE 3 The limi
42、t value can be independent of a coordinate system or dependent upon it. In the latter case, the limit value depends on the function of the ordinates of the coordinate system or graphical ordinate system. NOTE 4 The limit value can be determined by a statistical tolerancing approach, by an arithmetic
43、al tolerancing (worst case) approach or by other means. The manner of determining the limit value and the choice of condition is not the subject of this International Standard. NOTE 5 Two possible inequality relations exist: the characteristic value can be less than or equal to the limit value (uppe
44、r limit); the characteristic value can be greater than or equal to the limit value (lower limit). 1) In preparation. EN ISO 25378:2011 (E) DIN EN ISO 25378:2011-12 63.2.1 individual condition condition where the limit value applies to any value of an individual characteristic coming from any workpie
45、ce EXAMPLE An individual condition used in an individual specification: the individual characteristic value shall be less than or equal to 10,2. Mathematically: let X be the considered value of the individual characteristic, the condition is X u 10,2. NOTE An individual condition can be used alone o
46、r in combination with a population condition on the corresponding population characteristic. 3.2.2 population condition condition where the limits apply to the value of the population characteristic EXAMPLE A population condition used in a population specification: the value of a population characte
47、ristic shall be less than or equal to 10,1. Mathematically: let X be the considered value of the population characteristic (mean value of the population of global individual characteristic values), the condition is 10,1X u . NOTE The population condition can be used for statistical process control (
48、SPC). 3.3 geometrical characteristic individual characteristic or population characteristic related to the geometry NOTE 1 This International Standard applies to the field of geometry and therefore, throughout this standard, only “geometrical characteristics” are used. The term “characteristic” is d
49、efined in ISO 9000:2005, 3.5.1. NOTE 2 The geometrical characteristic permits the evaluation of a quantity which could be associated to, for instance, an angular dimension, a linear dimension, an area, a volume, etc. 3.3.1 individual characteristic individual geometrical characteristic single geometrical property of one or more geometr
