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SIST ISO 7863:1999
01-marec-1999
*ORELQVNDYLMDþQDPHULODLQSRGORåQHNODGH
Height setting micrometers and riser blocks
Micromètres verticaux et rehausses
Ta slovenski standard je istoveten z: ISO 7863:1984
ICS:
17.040.30 Merila Measuring instruments
SIST ISO 7863:1999 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST ISO 7863:1999
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SIST ISO 7863:1999
7863
International Standard
INTERNATIONAL ORGANIZATION FOR STANDARDIZATlON.MEX~YHAPO~HAR OPrAHM3AL&lR IlO CTAH,QAPTt43ALWl@ORGANlSATlON INTERNATIONALE DE NORMALISATION
Height setting micrometers and riser blocks
Microm&es verticaux et rehausses
First edition - 1984-06-01
Ref. No. IS0 7863-1984 (E)
U DC 531.714.7
Descriptors : measuring instruments, mechanical measuring instruments, micrometers, specifications, marking.
Price based on 6 pages
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SIST ISO 7863:1999
Foreword
IS0 (the International Organization for Standardization) is a worldwide federation of
national standards bodies (IS0 member bodies). The work of developing International
Standards is carried out through IS0 technical committees. Every member body
interested in a subject for which a technical committee has been authorized 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.
Draft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the IS0 Council.
International Standard IS0 7863 was developed by Technical Committee ISO/TC 3,
Limits and fits, and was circulated to the member bodies in March 1983.
It has been approved by the member bodies of the following countries:
Australia
Italy Switzerland
Belgium
Netherlands Thailand
Canada New Zealand United Kingdom
Czechoslovakia
Poland USA
Germany, F. R. South Africa, Rep. of USSR
Hungary Spain
India Sweden
disapproval of the docu ment
The member bodies of the following cou n tries expressed
on technical grounds :
France
Japan
0 International Organization for Standardization, 1984 0
Printed in Switzerland
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SIST ISO 7863:1999
IS0 7863-1984 (E)
INTERNATIONAL STANDARD
Height setting micrometers and riser blocks
3.2.2 scale mark: One of the marks constituting a scale.
1 Scope and field of application
This International Standard specifies the characteristics of
3.2.3 scale division: A part of the scale delimited by two ad-
height setting micrometers with a measuring capacity up to
jacent scale marks.
600 mm and a minimum scale value not greater than 2 pm
together with riser blocks up to 600 mm in height.
3.2.4 minimum scale value: The smallest value of the
measurand which the scale is graduated to indicate.
Test methods for the accuracy of these instruments are given in
annexes A and 6 for general information only.
3.2.5 repeatability : The property which characterizes the
ability of a measuring instrument to give identical indications,
2 References
for repeated measurements of the same quantity, over a short
interval of time, under stated conditions of use.
I SO 1, Standard reference temperature for industrial length
measurements.
A simulated datum feature (see
3.2.6 datum plane:
IS0 5459), here represented, for example, by a surface plate of
IS0 3656, Gauge blocks.
grade 0 (see IS0 8512/l and IS0 8512/2).
IS0 5459, Technical drawings - Geometrical tolerancing -
Datums and datum-systems for geometrical tolerances.
4 Specifications for height setting
IS0 851211, Surface plates - Part 7: Cast iron surface plates. l)
micrometers
IS0 851212, Surface plates - Part 2: Granite s&ace plates. ‘1
4.1 t-lousing and column
The housing and column shall be made of material with a linear
3 Terms and definitions
thermal coefficient of (11 + 1) x 10s6 K-l and suitably heat-
treated to stabilize their lengths.
3.1 Terms
The stabilizing process for the elements of the measuring
For the terms relating to height setting micrometers see
column shall ensure that the rate of change in the length of the
figure 1, and for riser blocks see figure 3.
elements due to residual instability of the material is not greater
than
3.2 Definitions
+ (0,05 + 0,001 L) pm/year
3.2.1 height setting micrometer: A measuring instrument
where L is the nominal length in millimetres.
comprising a substantial housing which carries a vertical
movable column, positioned by a micrometer screw, with
The column shall move freely within the housing and shall be
measuring elements provided with regularly spaced, alternative
free from stickiness.
or coplanar measuring faces.
1) At present a
...