1、BRITISH STANDARD Geometrical Product Specifications (GPS) - Length standards - Gauge blocks The European Standasd EN IS0 36501998 has the status of a British Standard ICs 17.040.30 BS EN IS0 3650: 1999 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGIW LAW STD-BSI BS EN IS0 3b5-ENGL
2、I997 811 lb24hb7 07777Lb b20 m Amd.No. Date BS EN IS0 36601999 Text affected This British Stasir,nrd, having been prepared under the direction of the Engineering Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 May 1999 O BSI 05-1999 ISBN O 5
3、80 32485 O National foreword This British Standard is the English language version of EN IS0 86501998. It is identical with IS0 36501998. It supersedes BS 4311-1:1993 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee TDEY4, Engineering drawing, metrolog
4、y, precision measurement and all related documentation, to Subcommittee TDE/4/-/4, Engineem precision measuring equipment including limits and fits, which has the responsibility to: - aid enquirers to understand the text; - present to the responsible internationallEuropean committee any enquiries on
5、 the interpretation, or proposals for change, and keep the UK interests informed - monitor related intemational and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references Attention is
6、 dram to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement these international or European publications may be found in the BSI Standar
7、ds Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for
8、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 inside front cover, the EN IS0 title page, the EN IS0 foreword page, the IS0 title page, pages ii to v, a blank page, pa
9、ges 1 to 15, the annex ZA page, an inside back cover and a back cover. STD-BSI BS EN IS0 3b50-ENGL 3999 I Lb2Libb 0779737 5b7 E EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IS0 3650 December 1998 ICs 17.040.30 Descriptors: English version Goemetrical product specifications (GPS) - Length sta
10、ndards - Gauge blocks (IS0 3650:1998) Spcification gomtrique des produits (GPC) - Etalons de longueur - Cales-Btalons (IS0 3650:1998) Geometrische ProduMspezHikation (GPS) - Ungennomale - Parallelendmae (IS0 3650:1998) This European Standard was approved by CEN on 8 November 1998. CEN members are bo
11、und to comply with the CENICENELEC 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 application to the
12、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 language and notified to the Central Secretariat has the same status
13、 as the official versions. CEN members are the national standards bodies of Austria, Belgium. Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland. Ireland. Italy. Luxembourg. Netherlands. Norway. Poriugal. Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDI
14、ZATION COMITE EUROPEEN DE NORMALISATION EUROPAISCHES KOMITEE FUR NORMUNG Central Secretariat rue de Stassart, 36 8-1050 Brussels 8 1998 CEN All rights of exploitation in any form and by any means reSeNed worldwide for CEN national Members. Ref. No. EN IS0 3650:1998 E Foreword The text of the Interna
15、tional Standard IS0 3650:1998 has been prepared by Technical Committee ISOTTC 21 3 “Dimensional and geometrical product specification and verification“ in collaboration with Technical Committee CENTTC 290 “Dimensional and geometrical product specification and verification“, the secretariat of which
16、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 by June 1999, and conflicting national standards shall be withdrawn at the latest by June 1999. According to the CENCENELEC Internal Re
17、gulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and th
18、e United Kingdom. Endorsement notice The text of the International Standard IS0 3650:1998 has been approved by CEN as a European Standard without any modification. NOTE: Normative references to International Standards are listed in annex ZA (normative). STD-BSI BS EN IS0 3b50-ENGL 3999 Lb2LIbbS 0779
19、739 33T = EN IS0 3650:1998 INTERNATIONAL STANDARD IS0 3650 Second edition 1998-1 2-1 5 Geometrical Product Specif ications (GPS) - Length standards - Gauge blocks Spcification gomtrique des produits (GPS) - talons de longueur - Caies-talons Reference number IS0 3650:1998(El STD-BSI BS EN IS0 3650-EN
20、GL 1999 Lb2qbb9 0779720 051 I EN IS0 3650:1998 Contents 1 Scope 1 2 Normative references 1 3 Definitions 1 4 Nomenclature of faces 3 5 Basis of measurement, traceability, reference condition 4 5.1 Unit of length: metre . 4 5.2 Traceability of the length of a gauge block 4 5.3 Reference temperature a
21、nd 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 Dimensional stability . 6 6.3 Marking 6
22、7 Metrological requirements 6 7.1 General . 6 7.2 Flatness tolerance, tf 7 7.2.1 Gauge blocks with nominal lengths exceeding 2. 5 mm 7 7.2.2 Gauge blocks with nomina1 lengths up to 2. 5 mm . 7 7.3 Measuring faces 7 Descriptors: geometrical product specifications. dimensional measurements. mechanical
23、 measuring instruments. standard gauges. block gauges. specifications. materials specifications. dimensions. dimensional tolerances. form tolerances. marking. calibration . II STD-BSI BS EN IS0 3b50-ENGL 1999 II 362qbb9 0779723 T98 = EN IS0 3650:1998 7.4 Side faces 7 7.4.1 Flatness 7 7.4.2 Paralleli
24、sm 8 7.4.3 Perpendicularity . 8 7.4.4 Edges 9 8 Calibration of gauge blocks 9 8.1 General 9 8.2 Wringing test . 10 8.3 Measurement by interferometry 10 8.3.1 Measured length 10 8.3.2 Auxiliary plate 10 8.3.3 Corrections to measurements by interferometry . 10 8.3.4 Calibration certificate 10 8.4 Meas
25、urement by comparison 11 8.4.1 Principle of measurement . 11 8.4.2 Central length . 11 8.4.3 Method of determining length by comparison . 11 8.4.4 Variation in length . 11 8.4.5 Corrections . 12 8.4.6 Calibration certificate 12 Annex A (informative) Example of a device for the comparison of gauge bl
26、ocks . 13 Annex B (informative) Relation to the GPS matrix model . 14 Annex C (informative) Bibliography 15 iii STD-BSI BS EN IS0 3b50-ENGL 1999 I Lb24bb7 0779722 724 1 EN IS0 3650:1998 Foreword IS0 (the International Organization for Standardization) is a worldwide federation of national standards
27、bodies (IS0 member bodies). The work of preparing International Standards is normally carried out through IS0 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizat
28、ions, governmental and non-governmental, in liaison with ISO, also take part in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. Draft International Standards adopted by the technical committees are circul
29、ated to the member bodies for voting. Publication as an international Standard requires approval by at least 75 % of the member bodies casting a vote. International Standard IS0 3650 was prepared by Technical Committee ISO/TC 21 3, Dimensional and geometrical product specifications and verification.
30、 This second edition cancels and replaces the first edition (IS0 36503 978), which has been technically revised. Annexes A, B and C of this International Standard are for information only. iv STD-BSI BS EN IS0 3b50-ENGL 1977 I lb2Libh9 0779723 BbO W EN IS0 3650:1998 Introduction This international S
31、tandard is a geometrical product specification standard and is to be regarded as a general GPS standard (see ISOTTR 14638). It influences chain link 6 (Calibration requirements - Calibration standards) of the chain of standards on size and distance. For more detailed information on the relation of t
32、his standard to the GPS matrix model, see annex B. Gauge blocks are length standards representing specified fractions of the unit of tength, the metre, of the international system of units SI. Depending on the kind of application and the required quality, gauge blocks are offered in several grades.
33、The calibration of the gauge blocks, .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 of gauge blocks as length standards. V STD.BS1 BS EN IS0 3b50-ENGL 1777 M Lb24bbS 077772Y 7T7 EN
34、 IS0 3650:1998 Geometrical Product Specifications (GPS) - Length standards - Gauge blocks 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 I, ranging from 0,5 mm to 1 O00 rnm
35、. Limit deviations and tolerances are stated for the calibration grade K and for the grades O, 1 and 2 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
36、 time of publication, the editions indicated were valid. All 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 IS0 m
37、aintain registers of currently valid International Standards. IS0 1 : 1975, Standard reference temperature for industrial length measurements. IS0 1 1 O1 :-I ), Geometrical Product Specifications (GPS) - Geometrical tolerancing - Generalities, definitions, symbols, indication on drawings. IS0 6507-1
38、 :1997, Metallic materials - Vickers hardness test - Part I: Test method. IS0 14253-1 :1998, Geometrical Product Specifications (GPS) - Inspection by measurement of workpieces and measuring equipment - Part 1: Decision rules for proving conformance or non-confotmance with specifications. Internation
39、al vocabulary of basic and general terms in metrology (VIM). BIPM, IEC, IFCC, ISO, IUPAC, IUPAP, OIML, 2nd edition, 1993. 3 Definitions For the purposes of this International Standard, the definitions given in IS0 14253-1, VIM and the following apply. 3.1 gauge block material measure of rectangular
40、section, made of wear-resistant material, with one pair of planar, mutually parallel 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 To be published. (Revision
41、 of IS0 1101:1983) STDaBSI BS EN IS0 3b50-ENGL 1777 E LbZVbb9 0779725 b33 E EN IS0 3650:1998 3.2 length of a gauge block 1 perpendicular distance between any particular point of the measuring face and the planar surface of an auxiliary plate of the same material and surface texture upon which the ot
42、her measuring face has been wrung See figure 1. NOTES 1 The length of a gauge block, I, includes the effect of one-face wringing (see 8.3.1). 2 The length, I, is a physical quantity consisting of a numerical value and a length unit (e.g. metre, millimetre or micrometre). If only the numerical value
43、is treated (e.9. in tables), the units should be stated explicitly. 3.3 central length of a gauge block length of a gauge block taken at the centre point of the free measuring face 4 See figure 1. NOTE - Length I, is a special instance of length i. Key 1 Auxilias, plate Figure 1 - Central length I,
44、and another example of length I at any point of a gauge block wrung to the plane surface of an auxiliary plate 3.4 deviation of the length at any point from nominal length e algebraic difference 1 - f, 3.5 deviation from flatness fd minimum distance between two parallel planes between which all poin
45、ts of the measuring face lie See figure 2. 2 STI).BSI BS EN IS0 3b50-ENGL 1777 I Lb2qbb 077972b 57T E EN IS0 3650:1998 1) See7.1. Figure 2 - Deviation central length I,; variation v withf, andf,; limit deviations te for the length at any point, proceeding from the nominal length 3.7 wringing propert
46、y 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 4 Nomenclature of faces See figure 4. 3 a) for nominal lengths I, 6 mm b) for nominal lengths I, 3 6 mm Key 1 Left hand measuring face 2 Right hand meas
47、uring face 3 Unmarked measuring face 4 Marked measuring face 5 Side faces 6 Marked side face NOTE - For the complete marking, see 6.3. Figure i - Nomenclature of aces 5 Basis of measurement, traceability, reference condition 5.1 Unit of length: metre The metre is defined as the length of the path tr
48、avelled by light in vacuum in 1/299 792 458 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 m
49、easured length of a gauge block is traceable to national or international length standards, if the measurement result can be related by an unbroken chain of comparison measurements each with stated uncertainties to a gauge block which has been calibrated by interferometry using appropriate wavelength standards. 5.3 Reference temperature and standard pressure The nominal length and the measured lengths of a gauge block apply at the reference temperature of 20 “C (see IS0 1) and the standard pressure 101 325 Pa = 1,01325 bar. NOTE - The effect on the rength of a gauge blo
