EN ISO 10360-6-2001 en Geometrical Product Specifications (GPS) - Acceptance and Reverification Tests for Coordinate Measuring Machines (CMM) - Part 6 Estimation of Errors in Compu.pdf

1、BRITISH STANDARD BS EN ISO 10360-6:2001 Incorporating corrigendum May 2007 Geometrical Product Specifications (GPS) Acceptance and reverification tests for coordinate measuring machines (CMM) Part 6: Estimation of errors in computing Gaussian associated features ICS 17.040.30 BS EN ISO 10360-6:2001

2、This British Standard was published under the authority of the Standards Policy and Strategy Committee on 28 March 2002 BSI 2008 ISBN 978 0 580 60776 9 National foreword This British Standard is the UK implementation of EN ISO 10360-6:2001. It is identical with ISO 10360-6:2001, incorporating corrig

3、endum May 2007. The start and finish of text introduced or altered by corrigendum is indicated in the text by tags. Text altered by ISO corrigendum May 2007 is indicated in the text by . The UK participation in its preparation was entrusted to Technical Committee TDW/4, Technical product realization

4、. 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 application. Compliance with a British Standard cannot confer immunity f

5、rom legal obligations. Amendments/corrigenda issued since publication Date Comments 31 July 2008 Implementation of ISO corrigendum May 2007EUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM ENISO103606 December2001 ICS17.040.30 Englishversion GeometricalProductSpecifications(GPS)Acceptanceand reverifica

6、tiontestsforcoordinatemeasuringmachines(CMM) Part6:EstimationoferrorsincomputingGaussianassociated features(ISO103606:2001) Spcificationgomtriquedesproduits(GPS)Essaide rceptionetdevrificationpriodiquedesmachines mesurertridimensionnelles(MMT)Partie6:Estimation deserreursdanslecalculdeslmentsassocis

7、 Gaussiens(ISO103606:2001) GeometrischeProduktspezifikation(GPS) AnnahmeprfungundBesttigungsprfungfr Koordinatenmessgerte(KMG)Teil6: AbweichungsabschtzungbeimBerechnenzugeordneter GeometrieelementenachGau(ISO103606:2001) ThisEuropeanStandardwasapprovedbyCENon12November2001. CENmembersareboundtocompl

8、ywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstandardwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStan

9、dardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibilityofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,De

10、nmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,SwitzerlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2001CEN Allrightsofex

11、ploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.ENISO103606:2001ECORRECTED20020206 Foreword Thisdocument(ISO103606:2001)hasbeenpreparedbyTechnicalCommitteeISO/TC213 “Dimensionalandgeometricalproductspecificationsandverification“incollaborationwith TechnicalCommitteeCE

12、N/TC290“Dimensionalandgeometricalproductspecificationand verification“,thesecretariatofwhichisheldbyAFNOR. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublication ofanidenticaltextorbyendorsement,atthelatestbyJune2002,andconflictingnational standardsshallbewithdrawnatthelate

13、stbyJune2002. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsof thefollowingcountriesareboundtoimplementthisEuropeanStandard:Austria,Belgium, CzechRepublic,Denmark,Finland,France,Germany,Greece,Iceland,Ireland,Italy, Luxembourg,Netherlands,Norway,Portugal,Spain,Sweden,

14、SwitzerlandandtheUnited Kingdom. Endorsementnotice ThetextoftheInternationalStandardISO103606:2001hasbeenapprovedbyCENasa EuropeanStandardwithoutanymodifications. NOTENormativereferencestoInternationalStandardsarelistedinannexZA(normative). BS EN ISO 10360-6:2001 iiiContents Page Introduction.v 1 Sc

15、ope1 2 Normative references1 3 Terms and definitions .2 4 Basic requirements.2 5 Reference data sets and reference parameter values .3 6 Test parameter values and converted test parameter values.3 7 Units4 8 Numerical uncertainty.4 9 Application of the test method.4 10 Compliance with specification

16、.7 11 Test certificate.8 Annex A (normative) Procedure for generating reference data sets.10 Annex B (informative) Relation to the GPS matrix model.18 Bibliography19 BS EN ISO 10360-6:2001 AnnexZA(normative) Normativereferencestointernationalpublicationswiththeirrelevant Europeanpublications20 blank

17、IS-06301 O6:(1002E) vIntroduction This part of ISO 10360 is a geometrical product specification (GPS) standard and is to be regarded as a general GPS standard (see ISO/TR 14638). It influences link 5 of the chains of standards on size, distance, radius, angle, form, orientation, location, run-out an

18、d datums. For more detailed information of the relation of this part of ISO 10360 to other standards and the GPS matrix model see annex B. Coordinate measurement technology is widely used in industrial metrology to assess features of a workpiece. A common requirement is to fit an associated feature

19、to a data set consisting of coordinate measurements of a real feature. This fitting is carried out by software. Software for calculating an associated feature provides values of parameters of the associated feature that are descriptive of the size, shape, location and orientation of the feature. The

20、se parameters are useful for the purpose of carrying out calculations involving the feature, often in conjunction with other associated features and other information, and in determining the extent to which a workpiece satisfies dimensional and positional specifications. The reliability of informati

21、on about features that is determined from associated features is influenced by the quality of the software for computing these features. The tests defined in this part of ISO 10360 are concerned with assessing the correctness of the parameters of computed associated features as measured by a coordin

22、ate measuring machine (CMM) or other coordinate measuring system. Although different criteria may be used to compute associated features, for example, by minimizing the Euclidean or Chebyshev norm of residuals, this test is applicable for software designed for unconstrained Gaussian (least-squares)

23、features. In the case of reverification tests of CMMs, the software test of this part of ISO 10360 usually does not provide new or different information in comparison with that obtained by an acceptance test, since software is supposed to be stable over time. However, a reverification test of the so

24、ftware may be useful following possible corruption or alteration of the software under test. For software already in existence, the evaluation of the performance may not be obtained only by fulfilling the requirements of this part of ISO 10360. However, such cases do not necessarily exclude the abil

25、ity of the software to perform correct computation of measurements. This part of ISO 10360 is applicable to software submitted for test in respect of the values it provides for the parameters of an associated feature. The test procedure is based on applying the software under test to reference data

26、sets, and comparing the results obtained with reference results. BS EN ISO 10360-6:2001blankINTENRATIONALTS ANDA DR IS-06301 O6:(1002E)I SO 1002 All irthgs ersedevr 1Geometrical Product Specifications (GPS) Acceptance and reverification tests for coordinate measuring machines (CMM) Part 6: Estimatio

27、n of errors in computing Gaussian associated features 1 Scope This part of ISO 10360 specifies a method for testing software used for computing associated features from coordinate measurements. The features of concern are the line (in two and three dimensions), the plane, the circle (in two and thre

28、e dimensions), the sphere, the cylinder, the cone and the torus. One or more separate tests are required for each feature claimed to be covered by the software. The test is of the software alone and therefore independent of the coordinate measuring system. NOTE 1 If the result of the test indicates

29、that the performance values for linear size parameters of the associated feature are significant compared with the error of indication of a CMM for size measurement (see ISO 10360-2), as provided by the CMM manufacturer, the software is inadequate for application on that measuring system. However, s

30、mall performance values, obtained as a result of this test, do not provide complete assurance that the software is totally suitable for computing associated features. This part of ISO 10360 is concerned with complete features and non-extremely partial features; however, the test for complete feature

31、s and that for partial features are separate, and software may be submitted for either or both tests. Cones with very large apex angles are not covered by the test. NOTE 2 Associated cones with very large angles are unusual in practice and the software for their stable computation is not widely avai

32、lable. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of ISO 10360. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agre

33、ements based on this part of ISO 10360 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of

34、 currently valid International Standards. ISO 10360-1:2000, Geometrical product specifications (GPS) Acceptance and reverification tests for coordinate measuring machines (CMM) Part 1: Vocabulary ISO 10360-2:2001, Geometrical Product Specifications (GPS) Acceptance and reverification tests for coord

35、inate measuring machines (CMM) Part 2: CMMs used for measuring size ISO 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 1 BS EN ISO 10360-6:200

36、1IS-06301 O6:(1002E) 2 ISO 1002 Allir thgser se devrISO 14660-1:1999, Geometrical product specifications (GPS) Geometrical features Part 1: General terms and definitions ISO 14660-2:1999, Geometrical product specifications (GPS) Geometrical features Part 2: Extracted median line of a cylinder and a

37、cone, extracted median surface, local size of an extracted feature International Vocabulary of Basic and General Terms in Metrology (VIM). BIPM, IFCC, IEC, ISO, IUPAC, IUPAP, OIML, 2nd edition, 1993 3 Terms and definitions For the purposes of this part of ISO 10360, the terms and definitions given i

38、n ISO 10360-1, ISO 14660-1, ISO 14660-2 and VIM apply. 4 Basic requirements The following basic requirements shall be met by the software supplier. a) The software under test shall have an unambiguous and unique identification (e.g. a release number). Improper applications of the test result to othe

39、r versions of the software under test are forbidden. The testing body is allowed to satisfy the request by an owner of (a license of) the software under test and its test certificate to re-run the test based on the reference data sets identified by the release number reported in the test certificate

40、. b) The software under test shall provide a means of 1) direct input of a reference data set and output of test parameter values to adequate numerical precision (see clause 8), bypassing the measurement and software correction parts of the system, and 2) inputting 2D coordinates to the software und

41、er test for computing 2D associated features (line and circle in two dimensions); if this is not available, it is tolerated to add a dummy null z coordinate to each point in the reference data sets, thus projecting the feature onto the xy coordinate plane. NOTE 1 The input and output procedures asso

42、ciated with some measuring systems may be limited in terms of the numerical precision of the values transmitted. This limitation may disadvantage the software under test in terms of the test results obtained. c) The method of input to, and output from, the processor is to be agreed with the testing

43、body. NOTE 2 It may be convenient to use a standard computer-readable medium in a standard format (e.g. ASCII on a 3,5“ disk). d) Corresponding to each feature for which the software under test is to be tested, a statement of the parametrization of the feature used by the software under test shall b

44、e provided. NOTE 3 Reference parametrizations are given in Table 3. e) Corresponding to each feature for which the software under test is to be tested and to the test type (see Table 2), a statement of the maximum permissible errors, MPEq, of the relevant parameter classes (see 9.3) shall be provide

45、d. 2 BS EN ISO 10360-6:2001IS-06301 O6:(1002E) I SO 1002 All irthgs ersedevr 35 Reference data sets and reference parameter values 5.1 General The reference data sets and the corresponding reference parameter values used for the purposes of testing the software under test shall be generated accordin

46、g to the procedure specified in annex A. The reference data sets are designed to simulate a range of sizes, shapes, locations, orientations and sampling of features. They are also designed to simulate typical CMM errors of measurement, including probing errors, and feature form deviations. The refer

47、ence data sets and the reference parameter values generated according to annex A shall be used only once for verification of any software under test (see A.1). 5.2 Initial estimates of parameter values Software under test may require that a subset of the points input to the software, usually the first ones in the set, has a predefined sampling pattern. This subset is used to determine the initial estimates of the parameter values. When this requirement is written in the operating instructions of the software under test, and upon request of the software supplier, the testing body shall gen