Inspect_Booklet_2011-04-12 Lo - SCHATZ USA Inc

SCHATZ®-INSPECT
The portable inspection system
· Verification of assembly specifications
· Detection of faulty threaded fastener joints

SCHATZ®-INSPECT
For monitoring assembly processes
and threaded fastener joints
The tightening method is the most important aspect of assembly specifications for
threaded fastener assembly. SCHATZ®-INSPECT provides measurement methods that
enable users to prove that the assembly methods and tolerances are suitable for the
assembly process.
Using random sample tests, SCHATZ®-INSPECT ensures that any NOK fastener
assemblies incorrectly assessed as OK are discovered.
Are the tolerances suitable
The parameters of the assembly method are calculated by
using abstracted models, and due to this abstraction these
models can only approximate actual conditions.
The tightening specifications usually state a torque or rotation
angle with corresponding tolerances.
In final assembly, inspectors are often faced with the question
whether the specified assembly method actually leads to the
desired result.
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Are the quality requirements met
The goal of random sample testing is to determine how well
process results comply with the specified quality requirements.
The assembly specifications, such as torque or rotation angle,
must be met within the specified tolerances, and the process
capability must be proven.
A process can be controlled only if random influences can be
detected and no systematic influences are present.
Are faulty threaded fastener joints detected
The purpose of performing regular random sample tests on
threaded fastener joints is to detect joints that are faulty
(NOK) even though they have been evaluated as OK.
Monitoring the torque and rotation angle during assembly
makes it possible to check whether the fastener is stressed
beyond its elastic limit during assembly.
A bolt that is stressed beyond its elastic limit suffers
permanent elongation. This impairs the reusability of the
fastener, and it may even lead to failure of the threaded
fastener joint.

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Transducers, instruments and software
Transducers for measuring torque, angle, preload force and more
1 Miniature transducers for torque and rotation angle
Miniature transducers are especially suitable for dynamic
torque measurements in the range of 0.1 Nm to 20 Nm with
miniature pneumatic or electric screwdrivers.
2 Hand wrenches for quick-change tools
The hand wrench transducer can be used for torque
measurements with threaded fastener joints that must be
assembled or tested by manual (re)tightening.
3 Torque and angle transducers with rotating shaft
Torques from 0.2 Nm to 10,000 Nm can be measured
dynamically with these torque or torque & angle transducers.
4 Force washers for installation in threaded fastener joints
These transducers can be used to measure the most important
parameter of the threaded fastener joint, the preload force,
with a measuring range of .2 kN to 20 kN.
5 Torque transducers with fixed shaft and flange connection
Flange-mount transducers are suitable for the static testing
of rotary nutrunners, impulse tools and click-type torque
wrenches in the range of 1 Nm to 2,000 Nm.
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Unlimited applications with INSPECT+
The instrument can be adapted to a wide range of transducers,
which allows it to be used for measurement and analysis applications
in quality assurance.
flow temperature pressure
weight speed length
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6 Barcode reader for convenient on-site data entry
If additional data such as tool numbers or part numbers must be recorded in the measurement results,
it can be captured quickly and easily by the inspector with a barcode reader.
7 INSPECT+
A universal measurement system for diverse applications
This advanced, portable instrument combines a robust exterior for use in an industrial environment
with modern leading-edge technology for random sample measurements on the assembly line. The unit
independently recognises the connected transducer and identifies it using the SCHATZ-Autocode® system.
Up to 500 transducers can be stored and managed with the transducer management function.
8 Measurement data documentation and analysis
EXCEL®-Software
The measured data can be exported via the serial interface to
an Excel® worksheet for statistical analysis or the evaluation
of graphics.
CEUS® software and online risk management
CEUS® is a complete network application, available in versions
for standalone workstations and client/server systems.
All connected test systems work with a uniform database on
an Oracle SQL database system.
testXpert®: measurement and analysis software for
threaded fastener assessment
This certified software works together with the
INSPECT+ instrument to enable users to conveniently
evaluate measure ment data and graphics using a monitor
and / or printer.

A complete system
for random sample testing and documentation
Local measurement data acquisition
The INSPECT+ instrument for SPC multi-station data
acquisition stores all characteristic data associated with
the measurement operations. This characteristic data can
be written to the instrument either manually or (with large
volumes of data) downloaded from a PC running the CEUS®
software. This only needs to be done once. After this, the
inspector on site only has to enter an operation number,
and the instrument directly retrieves all the basic parameters
needed for the measurement. The instrument saves the
measurement data from the threaded fastener operation,
and if desired it calculates the results for generating quality
control cards or X-bar / R cards.
Exporting measurement data to CEUS®
After all measurements have been completed, the instruments
send all the measured data to the analysis software.
The measured values, including the graphics, are sent to the
software, after which they can be retrieved, viewed
or analyzed.
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Measurement data analysis
The CEUS® software displays the results
of the measurements in the test plan
overview. At a glance you can see if the
measurements have been completed
according to plan and if the analysis
result is positive (green “thumbs up”
symbol) or negative (red “thumbs
down” symbol). Individual values can
be displayed by simply clicking the
appropriate symbol. One can quickly
see whether NOK measurements involve
a spread in the measured values, or
the assembly system was configured
incorrectly, or the measurement is an
isolated value outside the tolerance.
Double-clicking a value outside the
tolerance range displays a graphic curve
of the measurement process.
The CEUS® analysis software helps to
document the QA data and assist in
quickly identifying problems.

Graphic analyses
for assembly monitoring
Graphic analyses and evaluations
The threaded fastener assembly process includes a series of
complex processes that are difficult to monitor. Many physical
circumstances play a role in the threaded fastener joint, while
a driver tightens the nut or bolt to a defined torque. The first
process in the sequence is the run down. This is usually a
simple process unless tapping, self-locking or self-clamping
fasteners are used. However, a deformed thread or fastener
can easily change the run down. The tightening process is
performed with a defined torque. The goal is to produce a
defined preload force in the threaded fastener. It is desirable
to achieve the highest possible preload force in the threaded
fastener without overtightening it.
Automatic graphic analysis
The INSPECT+ portable instrument uses a patented method
to only record graphics from NOK measurements. Torque
or torque and angle tolerances are set in advance. The
instrument can measure over any length of time and will
store graphics only if the measurement result was outside
of the tolerances.
This method helps providing answers to frequently asked
questions in troubleshooting.
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Convenient data analysis
with testXpert®
The measurement process data stored
in the INSPECT+ is transferred to the
testXpert® analysis software.
The measurement process data can be
organized and allocated using freely
selectable and definable description and
entry fields. The program offers a wide
selection of analysis features, including
automatic scaling, crosshair cursor,
user-defined zoom, and displaying
individual measurement curves or curve
sets. The curves, labels and tables can
be adapted to specific user needs.
The software supports mathematical
functions such as the calculation
of the total friction coefficient, the
definition of individual results, and the
specification and control of tolerances
in tables and charts.

Universal special solutions
for your applications
Between torque and preload force
The relation between torque and preload force depends in
part on the geometry of the threaded fastener and in part on
the friction characteristics. Friction is essential, since without
friction every threaded fastener joint would loosen by itself.
A balance of forces
One of the important joining methods specified by DIN 8580
is press-fitting. With this method, the force necessary for
press-fitting provides important information on the status and
quality of the parts being joined. If the pressing force is too
high during the press-fitting process, there is a risk of plastic
deformation of the components being joined, which can have
a negative effect on proper operation.
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Leak-tight container closures
Leak-tight container closures are essential for the safe
transport of goods. For this reason, users and manufacturers of
canisters need to know how much torque must be applied to
close the container. Due to the variable characteristics of the
container thread, neither the container manufacturer nor the
closure manufacturer is able to specify the necessary closure
torque. Consequently, it can only be determined empirically.
Reliable closing and easy latching
Users primarily associate torque testing of door latches and
hinges with the accompanying ease of use. The torques
must be dimensioned such that the components are easy to
actuate, distinctly enter the latched position, and can be
unlatched by applying a comfortable amount of force. Using
torque instruments, these quality factors can be determined
and suitably analyzed.

World Headquarters
Remscheid, Germany
es providing repair and
ervices:
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repair and calibration services:
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ives providing repair and
ervices: Representatives providing
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ives:
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blic
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Remscheid
1
Remscheid
191 698-0
191 600-23
il.de
SCHATZ USA, Inc.
SCHATZ 7050 Big AGSky Drive, Unit E
P.O. Holly, Box Michigan 11 06 6948442
Germany 42866 Remscheid
Phone 248-369-8661
Kölner Fax Straße 248-708-5913 71
Germany 42897 Remscheid
Email sales@schatz-usa.com
Tel. Website +49 www.schatz-usa.com
(0) 2191 698-0
Telefax +49 (0) 2191 600-23
info@schatz-mail.de
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