1、BRITISH STANDARD BS EN ISO 3650:1999 Geometrical Product Specifications (GPS) Length standards Gauge blocks The European Standard ENISO3650:1998 has the status of a British Standard ICS 17.040.30BSENISO3650:1999 This British Standard, having been prepared under the directionof the Engineering Sector
2、Committee, was publishedunder the authority ofthe Standards Committee andcomes into effect on 15May1999 BSI 03-2000 ISBN 0 580 32485 0 National foreword This British Standard is the English language version of ENISO3650:1998. It is identical with ISO3650:1998. It supersedes BS4311-1:1993 which is wi
3、thdrawn. The UK participation in its preparation was entrusted by Technical Committee TDE/4, Engineering drawing, metrology, precision measurement and all related documentation, to Subcommittee TDE/4/-/4, Engineers precision measuring equipment including limits and fits, which has the responsibility
4、 to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of or
5、ganizations represented on this subcommittee can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding European publicat
6、ions. The British Standards which implement these international or European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standar
7、d does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an
8、 inside front cover, pagesi andii, theENISO title page, page2, the ISO title page, pagesii toiv, pages1 to14, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the insi
9、de front cover. Amendments issued since publication Amd. No. Date CommentsBSENISO3650:1999 BSI 03-2000 i Contents Page National foreword Inside front cover Foreword 2 Foreword iv Text of ISO 3650 1ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 3650 December 1998 ICS 17.040.30 Descr
10、iptors: English version Goemetrical product specifications (GPS) Length standards Gauge blocks (ISO 3650:1998) Spcification gomtrique des produits (GPS) Etalons de longueur Cales-talons (ISO3650:1998) Geometrische Produktspezifikation (GPS) Lngennormale Parallelendmae (ISO3650:1998) This European St
11、andard was approved by CEN on8November1998. 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 concerning
12、such national standards may be obtained on application to the Central Secretariat 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 langua
13、ge and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Swi
14、tzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members.
15、 Ref. No. EN ISO 3650:1998 EENISO3650:1998 BSI 03-2000 2 Foreword The text of the International Standard ISO3650:1998 has been prepared by Technical Committee ISO/TC213 “Dimensional and geometrical product specification and verification” in collaboration with Technical Committee CEN/TC290 “Dimension
16、al and geometrical product specification and verification”, the secretariat of which is held by DIN. 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 byJune1999, and conflicting national standards sha
17、ll be withdrawn at the latest byJune1999. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, It
18、aly, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the UnitedKingdom. Endorsement notice The text of the International Standard ISO3650:1998 has been approved by CEN as a European Standard without any modification. NOTENormative references to International Standards are l
19、isted inAnnex ZA (normative).ENISO3650:1998 ii BSI 03-2000 Contents Page Foreword iv Introduction 1 1 Scope 1 2 Normative references 1 3 Definitions 1 4 Nomenclature of faces 4 5 Basis of measurement, traceability, reference condition 4 5.1 Unit of length: metre 4 5.2 Traceability of the length of a
20、 gauge block 4 5.3 Reference temperature and standard pressure 4 5.4 Reference orientation of gauge blocks 5 6 General dimensions, material properties, marking 5 6.1 General dimensions 5 6.2 Material properties 5 6.2.1 Material 5 6.2.2 Coefficient of thermal expansion 6 6.2.3 Hardness 6 6.2.4 Dimens
21、ional stability 6 6.3 Marking 6 7 Metrological requirements 6 7.1 General 6 7.2 Flatness tolerance, t f 7 7.2.1 Gauge blocks with nominal lengths exceeding2,5mm 7 7.2.2 Gauge blocks with nominal lengths up to2,5mm 7 7.3 Measuring faces 7 7.4 Side faces 7 7.4.1 Flatness 7 7.4.2 Parallelism 7 7.4.3 Pe
22、rpendicularity 7 7.4.4 Edges 9 8 Calibration of gauge blocks 9 8.1 General 9 8.2 Wringing test 9 8.3 Measurement by interferometry 9 8.3.1 Measured length 9 8.3.2 Auxiliary plate 9 8.3.3 Corrections to measurements by interferometry 9 8.3.4 Calibration certificate 9 8.4 Measurement by comparison 10
23、8.4.1 Principle of measurement 10 8.4.2 Central length 10 8.4.3 Method of determining length by comparison 10 8.4.4 Variation in length 10 8.4.5 Corrections 11 8.4.6 Calibration certificate 11 Annex A (informative) Example of a device for the comparison of gauge blocks 12 Annex B (informative) Relat
24、ion to the GPS matrix model 13 Annex C (informative) Bibliography 14ENISO3650:1998 BSI 03-2000 iii Page Annex ZA (normative) Normative references to international publications with their relevant European publications Inside back cover Figure 1 Central length l cand another example of length l at an
25、y point of a gauge block wrung to the plane surface of an auxiliary plate 2 Figure 2 Deviation f dfrom flatness 3 Figure 3 Nominal length l n ; central length l c ; variation with f oand f u ; limit deviations t efor the length at any point, proceeding from the nominal length 3 Figure 4 Nomenclature
26、 of faces 4 Figure 5 Dimensions of coupling holes in mm 5 Figure 6 Perpendicularity deviation of side faces with a measuring face as a datum 8 Figure 7 Measurement of central length by comparison taking the perpendicular distance from the centre of a measuring face to the opposite one 10 Figure A.1
27、Example of a comparator for gauge blocks of nominal lengths up to100mm 12 Figure B.1 13 Table 1 Cross section 5 Table 2 Dimensional stability 6 Table 3 Flatness tolerance t f 7 Table 4 Perpendicularity tolerance 7 Table 5 Limit deviation, t e , of the length at any point of the measuring face from a
28、nd tolerance, t v , for the variation in length 8 Descriptors: Geometrical product specifications, dimensional measurements, mechanical measuring instruments, standard gauges, block gauges, specifications, materials specifications, dimensions, dimensional tolerances, form tolerances, marking, calibr
29、ation.ENISO3650:1998 iv BSI 03-2000 Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body i
30、nterested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechn
31、ical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least75% of the member bodies casting a vote. I
32、nternational Standard ISO3650 was prepared by Technical Committee ISO/TC213, Dimensional and geometrical product specifications and verification. This second edition cancels and replaces the first edition (ISO3650:1978), which has been technically revised. Annex A, Annex B andAnnex C of this Interna
33、tional Standard are for information only.ENISO3650:1998 BSI 03-2000 1 Introduction This International Standard is a geometrical product specification standard and is to be regarded as a general GPS standard (seeISO/TR14638). It influences chain link6 (Calibration requirements Calibration standards)
34、of the chain of standards on size and distance. For more detailed information on the relation of this standard to the GPS matrix model, seeAnnex B. Gauge blocks are length standards representing specified fractions of the unit of length, the metre, of the international system of units SI. Depending
35、on the kind of application and the required quality, gauge blocks are offered in several grades. The calibration of the gauge blocks, i.e.the measurement of the length value at a specified point of the measuring face and the evaluation of the measurement uncertainty, is the basis for the application
36、 of gauge blocks as length standards. 1 Scope This International Standard specifies the most important design and metrological characteristics of gauge blocks with a rectangular cross section and a nominal length l nranging from0,5mm to1000mm. Limit deviations and tolerances are stated for the calib
37、ration grade K and for the grades0, 1 and2 for various measuring purposes. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All
38、 standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards
39、. ISO 1:1975, Standard reference temperature for industrial length measurements. ISO 1101:, Geometrical Product Specifications (GPS) Geometrical tolerancing Generalities, definitions, symbols, indication on drawings 1) . ISO 6507-1:1997, Metallic materials Vickers hardness test Part1: Test method. I
40、SO 14253-1:1998, Geometrical Product Specifications (GPS) Inspection by measurement of workpieces and measuring equipment Part1: Decision rules for proving conformance or non-conformance with specifications. International vocabulary of basic and general terms in metrology (VIM). BIPM, IEC, IFCC, ISO
41、, IUPAC, IUPAP, OIML, 2nd edition, 1993. 3 Definitions For the purposes of this International Standard, the definitions given in ISO14253-1, VIM and the following apply. 3.1 gauge block material measure of rectangular section, made of wear-resistant material, with one pair of planar, mutually parall
42、el measuring faces, which can be wrung to the measuring faces of other gauge blocks to make composite assemblies, or to similarly finished surfaces of auxiliary plates for length measurements 3.2 length of a gauge block l perpendicular distance between any particular point of the measuring face and
43、the planar surface of an auxiliary plate of the same material and surface texture upon which the other measuring face has been wrung 1) To be published. (Revision of ISO1101:1983)ENISO3650:1998 2 BSI 03-2000 seeFigure 1 NOTE 1The length of a gauge block, l, includes the effect of one-face wringing (
44、see8.3.1). NOTE 2The length, l, is a physical quantity consisting of a numerical value and a length unit (e.g.metre, millimetre or micrometre). If only the numerical value is treated (e.g.in tables), the units should be stated explicitly. 3.3 central length of a gauge block l c length of a gauge blo
45、ck taken at the centre point of the free measuring face seeFigure 1 NOTELength l cis a special instance of length l. 3.4 deviation of the length at any point from nominal length e algebraic difference l l n 3.5 deviation from flatness f d minimum distance between two parallel planes between which al
46、l points of the measuring face lie Figure 1 Central length l cand another example of length l at any point of a gauge block wrung to the plane surface of an auxiliary plateENISO3650:1998 BSI 03-2000 3 see Figure 2 3.6 variation in length difference between the maximum length l maxand the minimum len
47、gth l min see Figure 3 NOTEThe variation in length is equal to the sum of the deviations f oand f ufrom the central length l c . 3.7 wringing property of the measuring faces of gauge blocks to adhere to other measuring faces or to faces with similar surface finish as a result of molecular forces 1)S
48、ee7.1. Figure 2 Deviation f dfrom flatness NOTESee Table 4. Figure 3 Nominal length l n ; central length l c ; variation with f oand f u ; limit deviations t efor the length at any point, proceeding from the nominal lengthENISO3650:1998 4 BSI 03-2000 4 Nomenclature of faces See Figure 4. 5 Basis of
49、measurement, traceability, reference condition 5.1 Unit of length: metre The metre is defined as the length of the path travelled by light in vacuum in1/299792458 of a second(17th General Conference of Weights and Measures, 1983). The definition is realized by working wavelength standards recommended by the International Committee of Weights and Measures (CIPM). 5.2 Traceability of the length of a gauge block The measured length of a gauge block is traceable to national or internationa
