EN ISO 14253-1:1998
(Main)Geometrical Product Specifications (GPS) - Inspection by measurement of workpieces and measuring equipment - Part 1: Decision rules for proving conformance or non-conformance with specifications (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 (ISO 14253-1:1998)
Geometrische Produktspezifikation (GPS) - Prüfung von Werkstücken und Meßgeräten durch Messen - Teil 1: Entscheidungsregeln für die Feststellungen von Übereinstimmung oder Nichtübereinstimmung mit Spezifikationen (ISO 14253-1:1998)
Diese Internationale Norm definiert Regeln für die Entscheidung der Übereinstimmung oder Nicht-Übereinstimmung eines bestimmten Werstückes oder Meßgerätes mit einer vorgegebenen Toleranz (für ein Werkstück) oder Grenzen der größten zulässigen Abweichung (für ein Meßgerät) unter Berücksichtigung der Meßunsicherheit.
Spécification géométrique des produits (GPS) - Vérification par la mesure des pièces et des équipements de mesure - Partie 1: Règles de décision pour prouver la conformité ou la non conformité à la spécification (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 (ISO 14253-1:1998)
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Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2000
Geometrical Product Specifications (GPS) - Inspection by measurement of
workpieces and measuring equipment - Part 1: Decision rules for proving
conformance or non-conformance with specifications (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 (ISO 14253-1:1998)
Geometrische Produktspezifikation (GPS) - Prüfung von Werkstücken und Meßgeräten
durch Messen - Teil 1: Entscheidungsregeln für die Feststellungen von Übereinstimmung
oder Nichtübereinstimmung mit Spezifikationen (ISO 14253-1:1998)
Spécification géométrique des produits (GPS) - Vérification par la mesure des pieces et
des équipements de mesure - Partie 1: Regles de décision pour prouver la conformité ou
la non conformité a la spécification (ISO 14253-1:1998)
Ta slovenski standard je istoveten z: EN ISO 14253-1:1998
ICS:
17.040.10 Tolerance in ujemi Limits and fits
17.040.30 Merila Measuring instruments
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
INTERNATIONAL ISO
STANDARD 14253-1
First edition
1998-11-15
Geometrical Product Specifications
(GPS) — Inspection by measurement of
workpieces and measuring equipment —
Part 1:
Decision rules for proving conformance or non-
conformance with specifications
Spécification géométrique des produits (GPS) — Vérification par la mesure
des pièces et des équipements de mesure —
Partie 1: Règles de décision pour prouver la conformité ou la non-
conformité à la spécification
A
Reference number
ISO 14253-1:1998(E)
ISO 14253-1:1998(E)
Contents
1 Scope .1
2 Normative references .1
3 Definitions .2
4 General.6
5 Proving conformance and non-conformance with specifications.7
5.1 General.7
5.2 Rule for proving conformance with specifications .8
5.3 Rule for proving non-conformance with specifications .9
5.4 Uncertainty range .10
6 Application in a supplier/customer relationship .11
6.1 General.11
6.2 Supplier proving conformance.12
6.3 Customer proving non-conformance .12
Annex A (informative) Relation to the GPS matrix model .13
Annex B (informative) Bibliography .15
© 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
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ISO
ISO 14253-1:1998(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 14253-1 was prepared by Technical Committee ISO/TC 213, Dimensional and
geometrical product specifications and verification.
This part of ISO 14253 cancels and replaces clause 4 of ISO/R 1938:1971 which concerns indicating measurement
instruments and uncertainty of measurement. The rules given in ISO/R 1938:1971 is no longer sufficient and do not
correspond to the GUM method, which is now the uncertainty of measurement method in the field of GPS.
ISO 14253 consists of the following parts, under the general title Geometrical product specifications (GPS) —
Inspection by measurement of workpieces and measuring equipment:
— Part 1: Decision rules for proving conformance or non-conformance with specification
— Part 2: Guide to the estimation of uncertainty in measurement in calibration of measuring equipment and
product verification
— Part 3: Procedures for evaluating the integrity of uncertainty of measurement values
Annexes A and B of this part of ISO 14253 are for information only.
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ISO 14253-1:1998(E)
Introduction
This part of ISO 14253 is a geometrical product specifications (GPS) standard and is to be regarded as a global
GPS standard (see ISO/TR 14638). It influences the chain links 4, 5 and 6 of all chains of general GPS standards.
For more detailed information on the relation of this part of ISO 14253 to other standards and the GPS matrix model
see annex A.
The estimated uncertainty of measurement is to be taken into account when providing evidence for conformance or
non-conformance with specification.
The problem arises when a measurement result falls close to the upper or lower specification limit. In this case it is
not possible to prove conformance or non-conformance with specifications, since the measurement result plus or
minus the expanded uncertainty of measurement includes one of the specification limits.
Therefore a supplier/customer agreement should be foreseen in order to solve the problems which could arise. This
part of ISO 14253 explains how to handle specification, uncertainty of measurement and establishes decision rules
for proving conformance or non-conformance with specification.
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INTERNATIONAL STANDARD ISO ISO 14253-1:1998(E)
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 Scope
This part of ISO 14253 establishes the rules for determining when the characteristics of a specific workpiece or
measuring equipment are in conformance or non-conformance with a given tolerance (for a workpiece) or limits of
maximum permissible errors (for a measuring equipment), taking into account the uncertainty of measurement.
It also gives rules on how to deal with cases where a clear decision (conformance or non-conformance with
specification) cannot be taken, i.e. when the measurement result falls within the uncertainty range (see 3.23) that
exists around the specification limits.
This part of ISO 14253 applies to specifications defined in general GPS standards (see ISO/TR 14638), i.e.
standards prepared by ISO/TC 213, including
workpiece specifications (usually given as tolerance limits), and
measuring equipment specifications (usually given as maximum permissible errors).
It may also apply to specifications other than those defined in connection with general GPS standards.
This part of ISO 14253 does not apply to inspection using limit gauges. Inspection with limit gauges is covered by
ISO/R 1938.
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions of this part of
ISO 14253. At the time of publication, the editions indicated were valid. All standards are subject to revision, and
parties to agreements based on this part of ISO 14253 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 valid
International Standards.
ISO 3534-2:1993, Statistics — Vocabulary and symbols — Part 2: Statistical quality control.
ISO 8402:1994, Quality management and quality assurance — Vocabulary.
Guide to the expression of uncertainty in measurement (GUM), 1st edition, 1995.
. BIPM, IEC, IFCC, ISO, IUPAC, IUPAP,
International vocabulary of basic and general terms in metrology (VIM)
OIML, 2nd edition, 1993
.
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ISO 14253-1:1998(E)
3 Definitions
For the purposes of this part of ISO 14253, the definitions given in ISO 3534-2, ISO 8402, VIM, GUM and the
following apply.
3.1
tolerance
T
difference between the upper and lower tolerance limits
[ISO 3534-2:1993, 1.4.4]
NOTES
1 The tolerance is a quantity without sign.
2 A tolerance may be two-sided or one-sided (maximum permissible value on one side; the other limit value is zero) but the
tolerance zone does not necessarily include the nominal value.
3.2
tolerance zone
tolerance interval
variate values of the characteristic between and including the tolerance limits
[ISO 3534-2:1993, 1.4.5]
3.3
tolerance limits
limiting values
specified values of the characteristic giving upper and/or lower bounds of the permissible value
[ISO 3534-2:1993, 1.4.3]
3.4
maximum permissible errors (of a measuring equipment)
MPE
extreme values of an error permitted by specifications, regulations, etc. for a given measuring equipment
[VIM:1993, 5.21]
3.5
specification
tolerance on a workpiece characteristic or the maximum permissible errors, MPE, of measuring equipment
characteristic
NOTE — A specification should refer to or include drawings, patterns or other relevant documents and indicate the means
and the criteria whereby conformity can be checked.
3.6
specification zone
specification interval
variate values of the workpiece characteristic and the measuring equipment characteristic between and including
the specification limits
3.7
specification limits
tolerance limits of a workpiece characteristic or maximum permissible errors of a measuring equipment
characteristic
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ISO
ISO 14253-1:1998(E)
3.8
upper specification limit
USL
specified value giving either:
the upper boundaries of the permissible value of the tolerance limits of a workpiece characteristic; or
the upper boundaries of the permissible value of the permissible errors of a measuring equipment characteristic
3.9
lower specification limit
LSL
specified value giving either:
the lower boundaries of the permissible value of the tolerance limits of a workpiece characteristic; or
the lower boundaries of the permissible value of the permissible errors of a measuring equipment characteristic
3.10
measurand
Y
particular quantity subject to measurement
[VIM:1993, 2.6]
3.11
result of measurement
y
value attributed to a measurand, obtained by measurement
NOTES
1 When a result is given, it should be made clear whether it refers to:
— the indication,
— the uncorrected result,
— the corrected result,
and whether several results are averaged.
2 A complete statement of the result of a measurement, y' , includes information about the uncertainty of measurement.
[VIM:1993, 3.1]
3.12
nominal value
designated value of a characteristic in a given design specification or drawing
3.13
uncertainty of measurement
parameter, associated with the result of a measurement, that characterizes the dispersion of the values that could
reasonably be attributed to the measurand
NOTES
1 The parameter may be, for example, a standard deviation (or a given multiple of it), or the half-width of an interval having a
stated level of confidence.
2 Uncertainty of measurement comprises, in general, many components. Some of these components may be evaluated from
the statistical distribution of the results of series of measurements and can be characterized by experimental standard
deviations. The other components, which can also be characterized by standard deviations, are evaluated from assumed
probability distributions based on experience or other information.
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ISO
ISO 14253-1:1998(E)
3 It is understood that the result of the measurement is the best estimate of the value of the measurand, and that all
components of uncertainty including those arising from systematic effects, such as components associated with corrections
and reference standards, contribute to the dispersion.
[VIM:1993, 3.9 and GUM:1995, B.2.18]
3.14
standard uncertainty
...
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