BLM Joint Simulator Bench

BLM Joint Simulator Bench
Reproducing any joint stiffness for tool testing

BLM Joint Simulator Bench 3860
Flexible quality assurance - fast
The BLM Joint Simulator Bench 3860 provides
maximum tool evaluation fl exibility. DC electric,
clutch, impulse and battery tools as well
as torque wrenches are able to be evaluated.
The hydraulic brakes simulate the behaviour
of a real joint reproducing the stiffness from
hard to soft. This allows the tool to be tested in
accordance with VDI/VDE 2647. Machine capability
(Cm, Cmk) can be tested quickly and
easily under real shop fl oor conditions without
the need to run tests on the product on the
line that would interfere with production.
When testing, it is recommended to test the whole
tightening system not just the power tool. That is why
in addition to testing on the shop fl oor, it is also important
to test with the particular sockets and extensions
used in production. There is no need to remove the
socket from the tool.
A complete set of adapters allows the nutrunner
to be tested as it is used on the line. The patented
design of hydraulics brakes, the valves and the oil
pressure accumulator ensure extremely low power
consumption. This allows the test bench to perform
production line tool testing for 16 hours between
charges.
Torque Supervisor installed
on every bench
This software has been specifi cally developed for the
management of plant wide tool operations and allows
machine capability evaluation in addition to periodic
SPC tool testing to ensure the correct performance
of production torque tools (model, class, date of
purchase, tool status, repair history, process history,
BLM Joint Simulator Bench on the shop fl oor
etc).
Tool evaluations are fully documented, including the
X bar and R charts with a complete history of the tool,
an important requirement for compliance with the
ISO 9000 standard.
High performance even under
demanding conditions
Joint Simulator Bench advanced technology provides
the best possible linearity when reproducing a joint
rate as a result of three patents. Joint Simulator
Bench innovative joint simulation brakes have low
inertia due to brake disc design, smooth actuation as
a result of oil immersed carbon brakes and a unique
cylinder design which allows quick response during
simulation. These features in conjunction with a fast
acting control valve system allow Joint Simulator
Bench to deliver exceptional performance even under
demanding conditions such as when testing a multistep
DC electric nutrunner.

Industrial PC, Windows based
operating system, dual hard
drives, special suspension,
Ethernet synchronization to
central server provides data
security. WI-FI communication
possible.
Drawer mounted keyboard
provides an additional interface
for large volume data
entry.
Energy saving pressure
accumulator
maintains the hydraulic
test pressure.
This eliminates
battery drain.
Effi cient hydraulic
pump fi lls the pressure
accumulator in
just 15 seconds reducing
battery drain.
Innovative braking system with
three patents for tool joint
simulation. The patents are:
– innovative cylinder/actuator
– thin steel disk for very low inertia
– brakes in carbon and work
in oil for very smooth action
Large LCD touchscreen,
intuitive and easy to use.
Connector panel manages all operator
connections such as external in-line torque
transducers, printers, Ethernet, USB and
serial.
Excellent accuracy realized through single
piece torque transducer eliminating play
and reducing inertia during tool testing.
The brake pressure control valve,
provides fast and accurate pressure
feedback for superior joint simulation.
The smart charging system automatically shuts
down the bench when the batteries are low. Places
the charger in stand-by mode when batteries are
fully charged.
BLM Joint Simulator Bench batteries (2 x 80 Ah) allow
over 16 hours of operation on a charge with the
safety of gel cell technology.

Fast and accurate
• Torque tools are tested very quickly on a Joint
Simulator Bench. It takes just a few seconds for a
periodic statistical control and three minutes to make
a machine capability test of 30 samples.
• No interference with the production line, torque tools
are tested without having to remove their sockets.
• Pneumatic tools are tested directly on the production
line under real conditions considering air pressure,
hose wear, lubrication, etc.
The joint is always available
• No more problems checking joints with little
clearance.
• No more problems checking joints rarely available
on the line (during the initial production of a new
model or with low volume models or options)
Keeps torque tools under control
Test
Cm, Cmk
Tool in use
on the line
Periodic statistic
testing in a
few seconds
OK
Repair
or adjust
the tool
NOK
Torque tool machine capability (Cm, Cmk) testing should
be performed prior to using a tool in production. If the
tool tests OK, and is placed in production, it should be
periodically checked to make sure that it is performing
correctly. If a tool is out of tolerance all the tightening
done before the test may be inaccurate. Keeping the
tool under control avoids this situation.
Joint Simulator Bench is able to evaluate the tool at
its production line location. The software package on the
test bench provides periodic SPC analysis of the tool’s
performance. If the torque tool needs adjustment or
repair, the SPC software notifi es the operator before the
fastening results are out of specifi cation.
Corrective actions
When Joint Simulator Bench is used to evaluate tools in
the production line, the torque tool is maintained at the
correct level of performance with torque management
software. As the tool is periodically tested an X bar
and R control chart is created and the tool’s results are
evaluated using SPC rules and control limits. If a tool is
found to be not OK, an easy to understand icon will recommend
the appropriate action (repair, adjust + or - ).
.
Remove tool from line
– to be calibrated
At least one measurement
is over the upper tolerance
but repeatability is good.
Set tool to a lower torque.
To be calibrated
Average is over control
limit but no value is out of
tolerance. Set tool
to a lower torque.
Remove tool from line
– to be repaired
At least one measure is
out of tolerance. Bad repeatability
does not allow
to calibrate.
Remove tool from line
– to be calibrated
At least one measurement
is below the lower
tolerance but repeatability
is good. Set tool to a
higher torque.
To be calibrated
Average is below control
limit but no value is out
of tolerance. Set tool to a
higher torque.
To be repaired
No value is out of
tolerance but bad
repeatability does not
allow to set properly.
ISO test fi xture
This optional fi xture can be provided with the Joint Simulator
Bench to make torque wrench testing easy and
accurate. With dial indicating or electronic wrenches,
it is easy to maintain the desired torque with this
fi xture. During click wrench testing, the fi xture reduces
operator infl uence and allows the fi nal torque to be
approached slowly and smoothly as recommended in
the ISO 6789. The fi xture can be extended out from
Joint Simulator Bench to match the length of the torque
wrench being calibrated.

BLM JOINT SIMULATOR BENCH 3890
Designed for testing torque tools
in the tool crib
The BLM Joint Simulator Bench 3890 is specially
designed for heavy duty applications such as testing
production torque tools in the tool crib. It has the same
characteristics as the BLM 3860 but is also fi tted with
a cooling system. This effectively removes the heat
produced by continuous testing that can involve several
thousand tests or more. It also enables lifetime tests
to be carried out without problem and with the joint
characteristics remaining constant.
Cooling system
The hydraulic brakes on the BLM 3890 have a cooling
system with heat exchanger to avoid overheating when
used continuously for life testing of nutrunners.
Adjustable fi xturing table
The BLM JSB 3890 is supplied with an adjustable holding
fi xture for spindles from multi-spindle torque tools.
It is powered for up and down movement to engage
the square drive to the brake and has a sliding function
to keep the working area of the brakes free when
not in use. Four spindles can be fi xed on the table
with adapter fl anges (not supplied with the bench).
The fl anges are fi xed to the table with screws
using the holes provided for this purpose.
The fi xturing table.

TORQUE SUPERVISOR
Torque Supervisor software is required to run the
BLM Joint Simulator Bench. Three versions are available
to suit varying needs:
Torque Supervisor Full: for each operation/joint the
software can manage two different types of control:
• controls Cm, Cmk or statistical check related to the
nutrunner in use for the operation/joint.
• controls Cp, Cpk or statistical results of residual
torque checks in conjunction with the LABwrench
or LABwrench Gyro.
The Torque Supervisor Full option is advised when
installed directly on the bench managing the nutrunners
as well as the residual torque checks.
Torque Supervisor Light: for benches utilized in the
tool crib environment, this version manages only Cm,
Cmk as well as periodical SPC testing of the nutrunner.
Torque Supervisor Client/Server. When more
benches are used along the line it is important to keep
one centralized database. In this case Torque Supervisor
Full is installed on a Server for complete data management.
The full list of nutrunners showing status
(on line, off-line, to be checked, OK, NOK) helps the
operator keep the tool under control as well as pro-
TECHNICAL DATA
viding other useful information such as model, class,
date of purchase, presence in line or store, controls,
etc.
Torque Supervisor process statistics creates full SPC
analysis. With separate data collecting capability for
nutrunners in use (Cmk) and residual torque checked
joints (Cpk), it is easy to compare results of nutrunners
with residual torque controls.
Hydraulic brakes, range Spindle fi xture Dimensions
Model
Mobile benches
Nm lb ft ISO rig holder Length x width x height Ordering No.
JSB 3860-250 1-250 0.8-150 – – 1000 x 550 x 920 8059 0962 00
JSB 3860-250 ISO 1-250 0.8-150 yes – 1150 x 550 x 920 8059 0962 30
JSB 3860-500 ISO 1-500 0.8-365 yes – 1150 x 550 x 920 8059 0962 35
JSB 3860-1000 ISO 1-1000 0.8-735 yes – 1400 x 700 x 950 8059 0962 40
JSB 3860-2000 ISO 1-2000 0.8-1470 yes – 1400 x 700 x 950 8059 0962 50
Fix benches
JSB 3890-500 SH 1-500 0.8-365 – yes 2100 x 850 x 1000 8059 0963 00
JSB 3890-2000 SH 1-2000 0.8-1470 – yes 2300 x 900 x 1000 8059 0963 50
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9833 1698 01 E.C.O Reklambyrå AB. Åtta.45 Tryckeri AB. 2008:1