GAuGE BLOCKS

GAuGE BLOCKS
Definition
Building up a stack
Advantages of ceramic gauge
blocks
When building up a stack (e.g. 55.826 mm) don’t pick the big blocks
first by working on the first digit. That way is harder and you may
run out of combinations.
Work from right to left by obtaining the last digit first. The last
digit in this case is 6, so pick 1.006 mm. Work through
the rest of the dimension by picking the largest
blocks that fit the next digit(s), as shown.
Gauge blocks are used for setting and calibrating
measuring instruments and are the most important
means for connection to the length unit meter at company level. They embody a certain length with a high degree
of accuracy – hence the term material measure.
1. Corrosion restistant
Anti-corrosion treatment is not required when handled normally (i. e. with
fingers), resulting in simple maintenance and storage.
2. No burrs caused by dents, ect.
Since the CERA Blocks is very hard, it will not scratch and is highly
resistant to burrs. If a burr is formed, it can easily be removed with a
ceramic deburring stone (Ceraston).
3. Abrasion resistant
CERA
Application
Based on 1 mm steps
1 pick
2nd pick
3rd pick
4th pick
5th pick
6th pick
Total
1.006
1.32
1.5
2
st
Completed gauge block
stack 55.826 mm
Certificates
EN ISO 3650
Gemetrical product specifications (GPS) - length standards
- Gauge blocks
nominal length
Checking the accuracy of measuring tools
1,8
petroleum
ether
microfiber
cloth
cotton wool
cosmetic brush
xxx
xxx
ceraston
JCSS
Mitutoyo Gauge Block Sets can be delivered with a JCSS
certificate of calibration (Japan Calibration Service
System). A JCSS certificate of calibration is comparable
with e.g. DAkkS, COFRAC, RvA or UKAS certificate of
calibration. According to ILAC, this calibration result may
be accepted internationally.
xxxxxx
50
mm
nominal length
Measuring faces
air blower
Wringing two thick gauge blocks
Setup of measuring devices
Step 1
Bring the two measuring
faces into contact with each other at right angles.
Grade and application
Workshop use
Inspection use
Calibrating measuring instruments
Calibration use
Reference use
Mitutoyo Europe GmbH
M3 Solution Center Neuss
Borsigstr. 8-10
D-41469 Neuss
T +49 (0)2137-102-0
F +49 (0)2137-102-351
www.mitutoyo.eu.com
55.826
Tungsten
carbide
0.2
CERA BLOCK
• Wringing should always be performed in a clean place on a soft pad - if gauge blocks slip from your hand, they will not be damaged.
• Wipe off the oil film from the gauge blocks using a soft cloth and petroleum ether.
• After this “rough” cleaning the surfaces are cleaned with a cosmetic brush rinsed with petroleum ether and then “blown free” with an air blower.
• Never use alcohol or common benzine for
cleaning; common benzine contains too many
impurities and alcohol always has aqueous components which may cause corrosion.
• Best-suited for wiping gauge blocks are microfiber cloths.
• Check the cleaned gauge blocks for rust and scratches.
• If there are any burrs on the measuring surface remove them carefully using a special ceraston for gauge blocks. Move the dry gauge block over the ceraston exerting very low pressure.
• In case the measuring surfaces are in good condition, but wringing is still difficult, you may wipe them with medical cotton wool - its oily components will provide a fine film thus improving the grip of the
measuring surfaces.
0
2000
4000
6000
8000
Amount of travel (m)
4. Dimensionally stable
CERA Blocks are free from dimensional change over time.
5. Sizes clearly marked
Black characters, indicating the nominal length, are inscribed by laser
and are clearly visible against the white surface of the block.
6. Non-magnetic nature prevents steel swarf
contamination
7. High wringing force
Superior flatness and surface finish provides maximum wringing force.
8. Closest expansions coefficient to steel
The thermal expansions coefficient of a CERA Block is quite similar to
that of a steel gauge block.
Material CERA Block Steel
(Fe)
Property
(ZrO2)
Coefficient of thermal expansion
9.3±0.5
10.8 ± 0.5
(10-6/K)
Grade
2
1 or 2
This is a clear advantage: The gauge blocks should have a coefficient
close to that of the measuring instrument itself. Otherwise there
would be an error due to different amounts of thermal expansions,
e.g. under workshop conditions.
Temperature characteristics of different materials
Difference in
dimension (µm)
3
Step 3
Tungsten carbide
18
CERA BLOCK
19
20
-1
21
22
23
Temperature (C)
Differences in the dimension between
some materials and steel that are
obtained when measuring testpieces with
a length of 100 mm at each temperature.
-3
Slide one gauge block over the other so that the
sides of the blocks are
9. Highly resistant to dropping and impact
flush with each other.
The CERA Block material is one of the toughest ceramics. It is
K or 0
K
extremly difficult to crack a CERA block in normal use.
Mitutoyo Italy
Mitutoyo Poland
Mitutoyo Russia
Mitutoyo Switzerland
Mitutoyo Čzesko
Mitutoyo Hungaria
Mitutoyo Netherlands
Mitutoyo Romania
Mitutoyo Sweden
Mitutoyo U.K.
1124 Budapest
Németvölgyi út 97
17
-2
1 or 2
0 or 1
Paris Nord 2
123 rue de la Belle Etoile
Corso Europa, 7
20020 LAINATE
Storkstraat 40
3905 KX Veenendaal
ul. Mińska 54-56
54-610 Wrocław
1 A Drumul Garii Odai Street, Ground Floor,
Room G03, 75100 Otopeni-Ilfov
Carbide
(WC-Co)
5.5 ± 1.0
1
While applying a small amount of force, gently turn one gauge block on the other. You will feel the two blocks stick together.
Mitutoyo France
Dubská 1626
415 01 Teplice
0.4
50
Mitutoyo Belgium
Hogenakkerhoekstraat 8
9150 Kruibeke
Steel
2
Applications
• Mounting tools and cutters
• Manufacturing gages
• Calibrating instruments
• Setup of measuring devices
• Checking the accuracy of gages
• Calibrating instruments
• Checking the accuracy of gauge blocks for workshop
• Checking the accuracy of gauge blocks for inspection
• Checking the accuracy of instruments
• Checking the accuracy of gauge blocks for calibration
• For academic research
Carbide
(WC-Co)
1650
Abrasion loss
(µm)
Step 2
The grades specify the metrological characteristics (grades of accuracy). The following table can be used to select the
gauge block grade according to usage (specified by EN ISO 3650, BS4311, and JIS B 7506).
Steel
(Fe)
800
Wear resistance of different materials
Perfect wringing of gauge blocks
ILAC
The International Laboratory Accreditation Cooperation is
an international cooperation of laboratory and inspection
accreditation bodies. The member bodies signed the ILAC
Mutual Recognition Arrangement (MRA) which guarantees a cross approval of certificates from accredited
laboratories from other countries. Signatories to the ILAC
arrangement are almost all European countries.
Material CERA Block
(ZrO2)
1350
Property
Hardness (HV)
13 Sharikopodshipnikovskaya, bld.2
115088 Moscow
Släntvägen 6
194 54 Upplands Väsby
Steinackerstrasse 35
8902 Urdorf
West Point Business Park
Joule Road, Andover, Hampshire SP10 3UX
© MITUTOYO/D 1012 PRE90004-GAUGE BLCOKS
Standard
20
30
Blocks have 10 times the abrasion resistance of steel gauge blocks.
Mitutoyo Special
Mitutoyo Special
Mitutoyo Gauge Blocks with JCSS Calibration Certificate
Steel / Cera Gauge Block Sets with JCSS Calibration Certificate
The gauge block sets are delivered with a JCSS calibration certificate
(Japan Calibration Service System). A JCSS calibration certificate is comparable with e.g. DAkkS, COFRAC, RvA or UKAS calibration certificate.
Refering to ILAC* this calibration result may be accepted internationally.
❚❚JCSS: These gauge block sets are delivered with a JCSS calibration
certificate (Japan Calibration Service System). A JCSS certificate of
calibration is comparable with e.g. DAkkS, COFRAC or RvA certificate of
calibration. This calibration result is accepted internationally.
❚❚Accuracy: EN ISO 3650
* ILAC (International Laboratory Accreditation Cooperation): The memberbodies (almost all European countries, Japan a.s.o.) guarantee a cross
approval of certificates from accreditated laboratories under each other.
Calibration Certificates
No.
ILAC
e.g.
JCSS
DAkkS
COFRAC
RvA
UKAS
a.s.o.
⇔
516-342Z-10
103
0
516-343Z-10
103
1
87
0
516-347Z-10
87
1
516-962Z-10
47
0
516-963Z-10
47
1
32
0
32
1
516-346Z-10
516-966Z-10
Price Advantage
Customers who buy gauge block sets with a
JCSS calibration certificate receive a high-value
certificate for just a small price difference
compared to standard sets.
GB Set 47 Steel Grade 1
High level calibration certificate
(e.g. RvA, DAkkS Calibration)
made by an external laboratory
Total
Example (47 steel gauge block set):
Listprice €
516-963-10
516-963Z-10
with certificate of inspection
with JCSS (high level)
calibration certificate
1.170,00
1.250,00
Approx. 600,00 - 700,00
–
Promotion price €
516-963Z-10
with JCSS (high level)
calibration certificate
875,00
–
Approx. 1.770,00 - 1.870,00 1.250,00
875,00
Expanded
uncertainty of
measurement
Adress
on the certificate
Mitutoyo
Standard for
gauge blocks
Mitutoyo
headquarters
With JCSS/
ILAC sign
Extraordinary
good
Mitutoyo
Miyazaki factory/
calibration
laboratory
Certificate
number
I
I
Information
• Serial no.
• Code no.
• Manufacturer
a.s.o.
I
I
Date of
Inspection
(calibration)
I
I
Traceability
I
I
Measured deviation
from the nominal
length:
• Nominal length
• Central deviation
• Max. deviation
• Min. deviation
• Variation
I
I
Block allocation
Ceramic
Steel
Step
List price €
Promotion price €
Quantity
1.005
1.01 - 1.49
0.5 - 24.5
25 - 100
0.01
0.5
25
1
49
49
4
5.006,00
3.750,00
4.256,00
3.190,00
1.001 - 1.009
1.01 - 1.49
0.5 - 9.5
10 - 100
0.001
0.01
0.5
10
9
49
19
10
4.016,00
3.010,00
3.186,00
2.390,00
1.005
1.01 - 1.19
1.2 - 1.9
1-9
10 - 100
0.01
0.1
1
10
1
19
8
9
10
1.430,00
1.055,00
1.170,00
875,00
1.005
1.01 - 1.09
1.1 - 1.9
1-9
10 - 30
60
0.01
0.1
1
10
-
1
9
9
9
3
1
920,00
690,00
720,00
540,00
JCSS Calibration Certificate
Info:
Miyazaki plant and calibration laboratory
Difference between Mitutoyo Inspection Certificate and Mitutoyo JCSS Certificate
JCSS calibration
certificate
(Suffix: Z-10)
Grade
Size in mm
516-967Z-10
Inspection certificate
(Suffix: -10)
Blocks per set
The highest level of calibration!
The International Laboratory Accreditation Cooperation is an
international cooperation of laboratory and inspection accreditation bodies.
The member bodies signed the ILAC Mutual Recognition Arrangement (MRA) which guarantees a cross approval of certificates
from accredited laboratories from other countries. Signatories to
the ILAC arrangement are almost all European countries.
Layout
Material
Accreditation No.: 0030
Requests
from
EN ISO 3650
• Type interferometry and comparison
• Range 0.1 mm up to 1000 mm
• Measurement uncertainty
Calibration scope
I
Gauge blocks
(Interferometry method)
I
Gauge blocks
(Comparison method)
CMC (expanded uncertainty (k=2) )
(L (mm): Nominal length)
From 0.1 mm up to 100 mm
0.020 µm
More than 100 mm up to 250 mm
(0.010 + 0.00010 L) µm
More than 250 mm up to 1000 mm
(0.020 + 0.00020 L) µm
From 0.1 mm up to 100 mm
More than 100 mm up to 1000 mm
Above-mentioned prices are Mitutoyo’s suggested retails prices without VAT. Action valid from 1. Nov. 2012 to 31. Jan. 2013. Product illustrations are without obligation. Product descriptions, in particular any and all technical specifications, are only binding when explicitly agreed upon.
0.06 µm
(0.04 + 0.00043 L) µm