1、DEUTSCHE NORM Februarv 1999 Geometrical Product Specifications (GPS) (IS0 3650 : 1998) Enalish version of DIN EN IS0 3650 Length standards - Gauge blocks I DIN IEN IS0 3650 ICs 17.040.30 Supersedes DIN 861 -1, January 1980 edition. Descriptors: GPS, length standards, gauge blocks. Geometrische Produ
2、ktspezifikationen (GPS) - Lngennormale - Parallelendmae (IS0 3650 : 1998) European Standard EN IS0 3650 : 1998 has the status of a DIN Standard. A comma is used as the decimal marker. National foreword This standard has been published in accordance with a decision taken by CEN/TC 290 to adopt, witho
3、ut alteration, International Standard IS0 3650 as a European Standard. The responsible German body involved in its preparation was the Normenausschu Technische Grundlagen (Fundamentals in Technology Standards Committee). The DIN Standards corresponding to the International Standards referred to in c
4、lause 2 and Annex C of the EN are as follows: IS0 Standard DIN Standard IS0 1 DIN 102 IS0 11 o1 DIN IS0 11 O1 IS0 6507-2 DIN 50133 IS0 14253-1 DIN EN IS0 14253-1 Amendments DIN 861 -1, January 1980 edition, has been superseded by the specifications of EN IS0 3650. Previous editions DIN 861 : 1927-07
5、, 1955-05; DIN 861 -1 : 1959-1 O, 1980-01. National Annex NA Standards referred to (and not included in Normative references and Annexes C and ZA) DIN 102 DIN 50133 DIN EN IS0 14253-1 Reference temperature for measuring instruments and workpieces Vickers hardness testing of metallic materials - HV 0
6、,2 to HV 1 O0 Geometrical product specifications (GPS) - Inspection of workpieces and measuring instruments - Part 1 : Decision rules for proving conformance or non-conformance with specification EN comprises 19 pages. No pari of this standard may be reproduced without the prior permission of Ref. N
7、o. DIN EN IS0 3650 : 1999-0 Y Deutsches Institut fr Normung e. V., Berlin. wth Verlag GmbH, D-10772 Berlin, has the exclusive right of sale for German Standards (DIN-Normen). English price group 11 Sales No. 11 11 07.99 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN IS0 3650 December 1998 ICs
8、17.040.30 Descriptors: GPS, length standards, gauge blocks. English version Geometrical Product Specifications (GPS) (IS0 3650 : 1998) Length standards - Gauge blocks Spcification gomtrique des Geometrische Produktspezifikationen produits (GPS) - talons de longueur - Cales-talons (IS0 3650 : 1998) (
9、GPS) - Lngennormale - Parallel- endmae (IS0 3650 : 1998) This European Standard was approved by CEN on 1998-1 1-08. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any
10、alteration. Up-to-date lists and bibliographical references concerning such national stand- ards may be obtained on application to the Central Secretariat or to any CEN member. The European Standards exist in three official versions (English, French, German). A version in any other language made by
11、translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland,
12、Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels O 1998. CEN - All right
13、s of exploitation in any form and by any means reserved worldwide for CEN national members. Ref. No. EN IS0 3650 : 1998 E Page 2 EN IS0 3650 : 1998 Foreword International Standard IS0 3650 : 1998 Geometrical Product Specifications (GPS) - Length standards - Gauge blocks, which was prepared by ISO/TC
14、 21 3 Dimensional and geometrical product specifications and verification of the International Organization for Standardization, has been adopted by Technical Committee CEN/TC 290 Dimensional and geometrical product specifications and verification, the Secretariat of which is held by DIN, as a Europ
15、ean Standard. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, and conflicting national standards withdrawn, by June 1999 at the latest. In accordance with the CENKENELEC Internal Regulations, the national standard
16、s organizations of the follow- ing countries are bound to implement this European Standard: Austria, Belgium, the Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, the Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, and the United Kingdom. End
17、orsement notice The text of the International Standard IS0 3650 : 1998 was approved by CEN as a European Standard without any modification. NOTE: Normative references to international publications are listed in Annex ZA (normative) Page 3 EN IS0 3650 : 1998 Contents 1 Scope 5 2 Normative references
18、5 3 Definitions 5 4 Nomenclature of faces 7 5 Basis of measurement, traceability, reference condition 8 5.1 Unit of length: metre . 8 5.2 Traceability of the length of a gauge block 8 5.3 Reference temperature and standard pressure . 8 5.4 Reference orientation of gauge blocks 9 6 General dimensions
19、, material properties, marking 9 6.1 General dimensions 9 6.2 Material properties 9 6.2.1 Material . 9 6.2.2 Coefficient of thermal expansion . 1 O 6.2.3 Hardness . I O 6.2.4 Dimensional stability . 1 O 6.3 Marking 1 O 7 Metrological requirements 1 o 7.1 General . 1 o 7.2 Flatness tolerance, tf I 1
20、7.2.1 Gauge blocks with nominal lengths exceeding 2. 5 mm 11 7.2.2 Gauge blocks with nominal lengths up to 2. 5 mm . 11 7.3 Measuring faces 11 Page 4 EN IS0 3650 : 1998 7.4 Side faces 11 7.4.1 Flatness 11 7.4.2 Parallelism 12 7.4.3 Perpendicularity . 12 7.4.4 Edges 13 8 Calibration of gauge blocks 1
21、3 8.1 General 13 8.2 Wringing test . 14 8.3 Measurement by interferometry 14 8.3.1 Measured length 14 8.3.2 Auxiliary plate 14 8.3.3 Corrections to measurements by interferometry . 14 8.3.4 Calibration certificate 14 8.4 Measurement by comparison 15 8.4.1 Principle of measurement . 15 8.4.2 Central
22、length . 15 8.4.3 Method of determining length by comparison . 15 8.4.4 Variation in length . 15 8.4.5 Corrections . 16 8.4.6 Calibration certificate 16 Annex A (informative) Example of a device for the comparison of gauge blocks . 17 Annex B (informative) Relation to the GPS matrix model . 18 Annex
23、 C (informative) Bibliography 19 Introduction This International Standard is a geometrical product specification standard and is to be regarded as a general GPS standard (see ISO/TR 14638) . It influences chain link 6 (Calibration requirements - Calibration standards) of the chain of standards on si
24、ze and distance . For more detailed information on the relation of this standard to the GPS matrix model. see annex B . Gauge blocks are length standards representing specified fractions of the unit of length. the metre. of the international system of units SI . Depending on the kind of application
25、and the required quality. gauge blocks are offered in several grades . 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
26、 standards . Page 5 EN IS0 3650 : 1998 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 mm. Limit deviations and tolerances are stated for the
27、 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 time of publication, the editions indicated were va
28、lid. 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 maintain registers of currently valid International S
29、tandards. IS0 1 : 1975, Standard reference temperature for industrial length measurements. IS0 1 1 O1 :- 1, Geometrical Product Specifications (GPS) - Geometrical tolerancing - Generalities, definitions, symbols, indication on drawings. IS0 6507-1 :1997, Metallic materials - Vickers hardness test -
30、Part 1: 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-conformance with specifications. International vocabulary of basic and general terms in metrolog
31、y (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 section, made of wear-resistant material, with one p
32、air 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 of IS0 1101:1983) Page 6 EN IS0 3650 : 1998 3.2 len
33、gth 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 other measuring face has been wrung See figure 1. NOTES 1 The length of a gauge block, I, includes the
34、 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 is treated (e.g. in tables), the units should be stated explicitly. 3.3 central length of a gauge bl
35、ock 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 Auxiliary plate Figure 1 - Central length 1, and another example of length 1 at any point of a gauge block wrung to the plane surface of an auxili
36、ary plate 3.4 deviation of the length at any point from nominal length e algebraic difference 1 - In 3.5 deviation from flatness minimum distance between two parallel planes between which all points of the measuring face lie fd See figure 2. Page 7 EN IS0 3650 : 1998 1) See7.1 Figure 2 - Deviationfd
37、 from flatness 3.6 variation in length difference between the maximum length ImaX and the minimum length Irni, V See figure 3. NOTE - The variation in length is equal to the sum of the deviations central length i,; variation v withf, andf,; limit deviations re for the length at any point, proceeding
38、 from the nominal length 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 4 Nomenclature of faces See figure 4. Page 8 EN IS0 3650 : 1998 a) for nominal lengths !“ e 6 mm b) for nom
39、inal lengths I, 3 6 mm Key 1 Left hand measuring face 2 Right hand measuring 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 4 - Nomenclature of faces 5 Basis of measurement, traceability, reference condition 5.1
40、Unit of length: metre The metre is defined as the length of the path travelled 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
41、 Measures (CIPM). 5.2 Traceability of the length of a gauge block The measured 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
42、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 1 O1 325 Pa = 1 ,O1 3 25
43、 bar. NOTE - The effect on the length of a gauge block caused by deviations from the standard pressure may be ignored under normal atmospheric conditions. Page 9 EN IS0 3650 : 1998 f Cross section Nominal length, i, a b nominal limit nominal limit deviation deviation 30 -0,05 - 0,3 -0,zo 0,5 6 I, 10
44、 O 9 101”1000 35 5.4 Reference orientation of gauge blocks The length of a gauge block up to and including I00 mm nominal length refers to the vertical orientation with the measuring faces horizontal. The length of a gauge block over 100 mm nominal length refers to the horizontal orientation with th
45、e block supported on one of the narrow side faces, without additional stress, by suitable supports each at a distance of 0,211 times the nominal length from the ends. When such a gauge block is measured by interferometry in horizontal orientation, the weight of the auxiliary plate wrung to one of th
46、e measuring faces shall be compensated. 6 General dimensions, material properties, marking 6.1 General dimensions The nominal dimensions of the cross section and their limit deviations are given in table 1 If gauge blocks with nominal lengths over 1 O0 mm are provided with coupling holes, the dimens
47、ions and location of holes shall be as shown in figure 5. Gauge blocks of grade K shall not be combined with coupling devices. Dimensions in millimetres Key 1 Measuring face 6.2 Material properties 6.2.1 Material U Figure 5 - Dimensions of coupling holes in rnrn Gauge blocks shall be made of high gr
48、ade steel or of other similarly wear-resistant material capable of being finished with surfaces that will wring readily, and which will be stable for length within the tolerances in table 2. Page 10 EN IS0 3650 : 1998 6.2.2 Coefficient of thermal expansion The coefficient of thermal expansion of ste
49、el gauge blocks in the temperature range 10 “C to 30 “C shall be (1 13 k 1 ,O) x 1 O K . The coefficient of expansion with its estimated uncertainty of determination shall be supplied with steel grade K gauge blocks, and also for all gauge blocks of all grades made of materials other than hardened steel. 6.2.3 Hardness The measuring faces of steel gauge blocks shall have a Vickers hardness of not less than 800 HV 0,5 (see IS0 6507-1). 6.2.4 Dimensional stability The maximum permissible changes in length per year of gauge blocks are stated in table 2. They apply when t
