EN ISO 3650:1998
(Main)Geometrical product specifications (GPS) - Length standards - Gauge blocks (ISO 3650:1998)
Geometrical product specifications (GPS) - Length standards - Gauge blocks (ISO 3650:1998)
This International Standard specifies the most important design and metrological characteristics of gauge blocks with a rectangular cross section and a nominal length ln ranging from 0,5 mm to 1000 mm.
Limit deviations and tolerances are stated for the calibration grade K and for the grades 0, 1 and 2 for various measuring purposes.
Geometrische Produktspezifikation (GPS) - Längennormale - Parallelendmaße (ISO 3650:1998)
Diese Norm legt die wichtigsten maßlichen und qualitativen Eigenschaften von P Parallelendmaßen mit einem rechteckigen Querschnitt und einem Nennmaß ln im Bereich von 0,5 mm bis 1000 mm fest. Die Grenzabmaße und Toleranzen werden für die Kalibrierklasse K und für die Toleranzklassen 0,1 und 2 für verschiedene Meßzwecke angegeben.
Spécification géométrique des produits (GPS) - Etalons de longueur - Cales-étalons (ISO 3650:1998)
La présente Norme internationale prescrit les caractéristiques de conception et les caractéristiques métrologiques les plus importantes des cales-étalons de section rectangulaire et de longueur nominale ln comprise entre 0,5 mm
et 1 000 mm.
Elle prescrit les écarts limites et les tolérances des cales de classe d'étalonnage K et de classes 0, 1 et 2 destinées à divers types de mesure.
Geometrical product specifications (GPS) - Length standards - Gauge blocks (ISO 3650:1998)
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Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2000
Geometrical product specifications (GPS) - Length standards - Gauge blocks (ISO
3650:1998)
Geometrical product specifications (GPS) - Length standards - Gauge blocks (ISO
3650:1998)
Geometrische Produktspezifikation (GPS) - Längennormale - Parallelendmaße (ISO
3650:1998)
Spécification géométrique des produits (GPS) - Etalons de longueur - Cales-étalons (ISO
3650:1998)
Ta slovenski standard je istoveten z: EN ISO 3650:1998
ICS:
17.040.30 Merila Measuring instruments
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
INTERNATIONAL ISO
STANDARD 3650
Second edition
1998-12-15
Geometrical Product Specifications
(GPS) — Length standards — Gauge blocks
Spécification géométrique des produits (GPS) — Étalons de longueur —
Cales-étalons
A
Reference number
ISO 3650:1998(E)
ISO 3650:1998(E)
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 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 Dimensional stability.6
6.3 Marking .6
7 Metrological requirements.6
7.1 General.6
7.2 Flatness tolerance, t .7
f
7.2.1 Gauge blocks with nominal lengths exceeding 2,5 mm .7
7.2.2 Gauge blocks with nominal lengths up to 2,5 mm .7
7.3 Measuring faces.7
© ISO 1998
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic
or mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Organization for Standardization
Case postale 56 • CH-1211 Genève 20 • Switzerland
Internet iso@iso.ch
Printed in Switzerland
ii
© ISO
ISO 3650:1998(E)
7.4 Side faces . 7
7.4.1 Flatness . 7
7.4.2 Parallelism. 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 Measurement 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 blocks . 13
Annex B (informative) Relation to the GPS matrix model. 14
Annex C (informative) Bibliography . 15
iii
© ISO
ISO 3650:1998(E)
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 interested 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 Electrotechnical
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 least 75 % of the member bodies casting a vote.
International Standard ISO 3650 was prepared by Technical Committee ISO/TC 213, Dimensional and geometrical
product specifications and verification.
This second edition cancels and replaces the first edition (ISO 3650:1978), which has been technically revised.
Annexes A, B and C of this International Standard are for information only.
iv
© ISO
ISO 3650:1998(E)
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 size 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 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 of gauge blocks as length standards.
v
INTERNATIONAL STANDARD © ISO ISO 3650:1998(E)
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 l ranging from 0,5 mm to 1 000 mm.
n
Limit deviations and tolerances are stated for the calibration grade K and for the grades 0, 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 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 ISO maintain
registers of currently valid International Standards.
ISO 1:1975,
Standard reference temperature for industrial length measurements.
1)
ISO 1101:— , Geometrical Product Specifications (GPS) — Geometrical tolerancing — Generalities, definitions,
symbols, indication on drawings.
ISO 6507-1:1997, Metallic materials — Vickers hardness test — Part 1: Test method.
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.
International 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 ISO 14253-1, 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 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
1)
To be published. (Revision of ISO 1101:1983)
© ISO
ISO 3650:1998(E)
3.2
length of a gauge block
l
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, l, includes the effect of one-face wringing (see 8.3.1).
2 The 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 block taken at the centre point of the free measuri
...
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