1、July 2011 Translation by DIN-Sprachendienst.English price group 10No 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 1
2、7.040.30!$sh“1805669www.din.deDDIN EN ISO 12181-2Geometrical product specifications (GPS) Roundness Part 2: Specification operators (ISO 12181-2:2011)English translation of DIN EN ISO 12181-2:2011-07Geometrische Produktspezifikation (GPS) Rundheit Teil 2: Spezifikationsoperatoren (ISO 12181-2:2011)E
3、nglische bersetzung von DIN EN ISO 12181-2:2011-07Spcification gomtrique des produits (GPS) Circularit Partie 2: Oprateurs de spcification (ISO 12181-2:2011)Traduction anglaise de DIN EN ISO 12181-2:2011-07SupersedesDIN ISO/TS 12181-2:2008-05www.beuth.deDocument comprises pagesIn case of doubt, the
4、German-language original shall be considered authoritative.1707.11 DIN EN ISO 12181-2:2011-07 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 collabor
5、ation with Technical Committee CEN/TC 290 “Dimensional and geometrical 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 Comm
6、ittee NA 152-03-02-13 UA Formprfung (GMA 3.21). The International Standards ISO 12180-1 and ISO 12180-2 ISO 12181-1 and ISO 12181-2 ISO 12780-1 and ISO 12780-2 ISO 12781-1 and ISO 12781-2 defining the vocabulary (Parts 1) and the principles of measurement (Parts 2) of deviations from roundness, cyli
7、ndricity, straightness and flatness have been prepared by Technical Committee ISO/TC 213 “Dimensional and geometrical product specifications and verification”. The responsible German body involved in its preparation was the Joint Working Committee DIN NA 152-03-02-13 UA/VDI/VDE-GMA 3.21 Formprfung w
8、hich recommends: Users of this standard should note that the provisions in Part 2 of the respective standard regarding probe tip radius, probing force, defaults for filter undulation, method of association are representative of idealized measurement conditions. As a basis for the practical implement
9、ation, the Joint Working Committee established the VDI/VDE 2631 guideline series on form measurement. The abbreviation UPR is the internationally accepted unit for undulations per revolution/Wellenanzahl pro Umdrehung. In German, the abbreviation W/U is also most common. The DIN Standards correspond
10、ing to the International Standards referred to in this document are as follows: ISO 11562 DIN EN ISO 11562 1) In preparation. ISO 12181-1 DIN EN ISO 12181-1 ISO 14253-1 DIN EN ISO 14253-1 ISO 17450-2 DIN EN ISO 17450-21)DIN EN ISO 12181-2:2011-07 3 Amendments This standard differs from DIN ISO/TS 12
11、181-2:2008-05 as follows: a) the Technical Specification has been adopted as an International Standard; b) the standard has been technically revised. Previous editions DIN ISO 4291: 1987-09 DIN ISO 6318: 1987-09 DIN ISO/TS 12181-2: 2005-07, 2008-05 National Annex NA (informative) Bibliography DIN EN
12、 ISO 11562, Geometrical Product Specifications (GPS) Surface texture: Profile method Metrological characteristics of phase correct filters DIN EN ISO 12181-1, Geometrical product specifications (GPS) Roundness Part 1: Vocabulary and parameters of roundness DIN EN ISO 14253-1, Geometrical product spe
13、cifications (GPS) Inspection by measurement of workpieces and measuring equipment Part 1: Decision rules for proving conformance or non-conformance with specifications DIN EN ISO 17450-1, geometrical specification and verification Geometrical product specifications (GPS) General concepts Part 1: Mod
14、el for DIN EN ISO 12181-2:2011-07 4 This page is intentionally blank EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 12181-2 April 2011 ICS 17.040.20 Supersedes CEN ISO/TS 12181-2:2007English Version Geometrical product specifications (GPS) - Roundness - Part 2: Specification operators (ISO
15、 12181-2:2011) Spcification gomtrique des produits (GPS) - Circularit -Partie 2: Oprateurs de spcification (ISO 12181-2:2011 )Geometrische Produktspezifikation (GPS) - Rundheit - Teil 2: Spezifikationsoperatoren (ISO 12181-2:2011) This European Standard was approved by CEN on 17 March 2011. CEN memb
16、ers 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 concerning such national standards may be obtained on applicati
17、on 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 its own language and notified to the CEN-CENELEC Managem
18、ent 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, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlan
19、ds, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in a
20、ny form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 12181-2:2011: EContents Page Foreword3 Introduction .4 1 Scope 5 2 Normative references 5 3 Terms and definitions .5 4 Complete specification operator5 4.1 General5 4.2 Transmission band6 4.3 Probing system8 5 Comp
21、liance with specification .8 Annex A (informative) Harmonic content of nominally round workpiece .9 Annex B (informative) Relationship to the GPS matrix model11 Bibliography 13 DIN EN ISO 12181-2:2011-07 EN ISO 12181-2:2011 (E) 2 Foreword This document (EN ISO 12181-2:2011) has been prepared by Tech
22、nical 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 shall be given
23、the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2011, and 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
24、 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 12181-2:2007. ISO 12181 consists of the following parts, under the general title Geometrical product specifications (GPS) Roundness: Part
25、 1: Vocabulary and parameters of roundness Part 2: Specification operators 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, Croatia, Cyprus, Czech Republic, De
26、nmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 12181-2:2011 has been ap
27、proved by CEN as a EN ISO 12181-2:2011 without any modification. DIN EN ISO 12181-2:2011-07 EN ISO 12181-2:2011 (E) 3 Introduction This part of ISO 12181 is a geometrical product specification (GPS) standard and is to be regarded as a general GPS standard (see ISO/TR 14638). It influences chain link
28、 3 of the chain of standards on form of line independent of datum. 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 ISO 8015 apply to this document and the default decision rules given in
29、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 12181 to other standards and the GPS matrix model, see Annex B. This part of ISO 12181 specifies the specification operators ac
30、cording to ISO 17450-2 for roundness of integral features. This part of ISO 12181 does not specify defaults for filter UPR, probe tip radius and method of association (reference circle). This means that it is necessary for a roundness specification to explicitly state which values are to be used for
31、 these specification operations in order for it to be unique. Consequently, if a specification does not explicitly state which values are to be used for one or more of these operators, the specification is ambiguous (see ISO 17450-2) and a supplier can use any value for the operator(s) not specified
32、 when proving conformance. Extracting data always involves applying a certain filtering process. An additional filtering of the extracted data might or might not be applied. This additional filter can be a mean line filter (Gaussian, spline, wavelet, etc.) or a non-linear filter (e.g. morphological
33、filter). The type of filtering influences the definition of roundness and the specification operators and, therefore, needs to be stated unambiguously. NOTE 1 Stylus filtering is not sufficient on its own to smooth a profile. In certain circumstances, it can create spurious high-frequency content, t
34、hus giving incorrect values. To correct this, a longwave pass filter is employed. A Gaussian filter is used, since this is the state-of-the-art. This filter has some shortcomings, e.g. it can distort, rather than eliminate some roughness features and it can distort, rather than transmit correctly so
35、me waviness features. It is envisioned that new filters under development within ISO provide better solutions for several of these issues. NOTE 2 If a smaller tip radius than the one specified is used for a given cut-off length, the resulting measured value is generally higher. This effect is usuall
36、y insignificant. If a larger tip radius is used, the resulting measured value is generally lower. The amount of change is heavily dependent on the surface measured. NOTE 3 The measuring force of zero N is chosen to eliminate effects of elastic deformation of the workpiece from the specification oper
37、ator. On metal surfaces with adequate thickness, the effect of normally occurring measuring forces is negligible. NOTE 4 Aliasing and other problems during extraction (see Annex A) due to the higher harmonic content of the skin model, in the roundness directions, can cause specification uncertainty.
38、 This part of ISO 12181 is not intended to disallow any means of measuring roundness. DIN EN ISO 12181-2:2011-07 EN ISO 12181-2:2011 (E) 4 1 Scope This part of ISO 12181 specifies the complete specification operator for roundness of integral features only and covers complete roundness profiles only,
39、 i.e. geometrical characteristics of features of the type circle. 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 referenced docum
40、ent (including any amendments) applies. ISO 11562:1996, Geometrical Product Specifications (GPS) Surface texture: Profile method Metrological characteristics of phase correct filters ISO 12181-1:2011, Geometrical product specifications (GPS) Roundness Part 1: Vocabulary and parameters of roundness I
41、SO 14253-1:1998, Geometrical Product Specifications (GPS Inspection by measurement of workpieces and measuring equipment Part 1: Decision rules for proving conformance or non-conformance with specifications ISO 17450-2:20111), Geometrical product specifications (GPS) General concepts Part 2: Basic t
42、enets, specifications, operators and uncertainties 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 12181-1 and ISO 17450-2 apply. 4 Complete specification operator 4.1 General The complete specification operator (see ISO 17450-2) is a full ordered se
43、t of unambiguous specification operations in a well-defined order. The complete specification operator defines the transmission band for the roundness profile, together with an appropriate stylus tip geometry. 1) To be published. (Revision of ISO/TS 17450-2:2002) DIN EN ISO 12181-2:2011-07 EN ISO 12
44、181-2:2011 (E) 5 4.2 Transmission band 4.2.1 Longwave-pass filter The longwave-pass filter shall be a phase correct filter (in accordance with ISO 11562), transmitting waves from 1 UPR and attenuating profile undulations progressively in the undulation region around the cut-off frequency (in UPR) (s
45、ee Figure 1). Key X undulations per revolution (UPR) Y transmission NOTE Other filter values than those shown in this figure can be used, if necessary for the application. Figure 1 Transmission characteristic for longwave-pass filter having cut-off frequencies fc= 15 UPR; 50 UPR; 150 UPR; 500 UPR; 1
46、 500 UPR The attenuation function is given by Equation (1): 2c10ffaea= (1) where ()ln 20,469 7 =a0is the amplitude of sine wave undulation before filtering; a1is the amplitude of this sine wave undulation after filtering; fcis the cut-off frequency, in undulations per revolution, of the longwave-pas
47、s filter; f is the frequency of the sine wave, in undulations per revolution. DIN EN ISO 12181-2:2011-07 EN ISO 12181-2:2011 (E) 6 4.2.2 Shortwave-pass filter The shortwave-pass filter shall be a phase correct filter (in accordance with ISO 11562), attenuating waves from 1 UPR up to the cut-off freq
48、uency (in UPR). It transmits undulations shorter than the cut-off frequency (in UPR) (see Figure 2). Key X undulations per revolution (UPR) Y transmission NOTE Other filter values than those shown in this figure can be used, if necessary for the application. Figure 2 Transmission characteristic for
49、shortwave-pass filter having cut-off frequencies fc= 15 UPR; 50 UPR; 150 UPR The attenuation function is given by Equation (2): 2c021ffaea= (2) where ()ln 20,469 7 =a0is the amplitude of sine wave undulation before filtering; a2is the amplitude of this sine wave after filtering; fcis the cut-off frequency, in undulations per revolution, of the longwave-pass filter; f is the frequency of the sine wave, in undulations per revolution. DIN EN ISO 12181-2:2011-07 EN ISO 12181-2:2011 (
