honorary sales representative meeting 2011
Precision Torque Sensor
Series 8661
The next Generation
The
- 1 measurement solution. www.burster.com
www.burster.com
08.04.2015 / 1
honorary sales representative meeting 2011
Hard Facts
• Measuring range:
from 0…+/- 0,05 Nm to 0 … +/- 200 Nm
• High precision for static and rotating
applications 0,05% f.s. and 0,09°
• Output signal for toque +/- 10 VDC,
TTL for speed and angular
measurement (option), USB (option)
• Extra socket for alternative external
supply
• Simple field installation using provided
mounting rack
• Excellent price – performance ratio
The measurement solution. www.burster.com
08.04.2015 / 2
honorary sales representative meeting 2011
Measuring Principle
•
Max. tension appears at an angle of 45°
•
Strain gages with max. sensitivity at 45°
•
Two strain gages on one backing
•
Additional strain gages on back side
The measurement solution. www.burster.com
08.04.2015 / 3
honorary sales representative meeting 2011
Energy Management
• Contactless energy transmission from stator to
rotor (Induction coils)
The measurement solution. www.burster.com
08.04.2015 / 4
honorary sales representative meeting 2011
Signal Processing Rotor
Strain Gages
Inductor Coil
Wheatstone
Bridge
Sending LED
Flexible Circuit Board
Code Wheel
The measurement solution. www.burster.com
08.04.2015 / 5
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Signal Processing Stator
The measurement solution. www.burster.com
08.04.2015 / 6
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Electrical Properties
• Integrated 16 bit A/D & D/A converters
• Torque: Output voltage 0… +/- 10 V
• Angle / speed: TTL output (5V ), configurable
as open collector output for direct connection
to PLC (pos. logic), option
• Wide supply voltage input range 10 V…30 VDC
• Automatic function check at power-on
• Check function inside (10.000 V output)
•
•
Extra socket for external supply
Intelligent operating state indicator
The measurement solution. www.burster.com
Operating state
display for:
magnitude,
overload and
error status
08.04.2015 / 7
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Mechanical properties
•
High quality bearings, low friction, excellent
balance, allowes speed of over 25.000 rpm
•
Overload protection 300 % of range
•
Smooth shaft ends (feather key grooves on
request)
•
High quality stainless steel shaft
•
Mechanical adaptation using metric threads
(front/rear/bottom)
•
Test and drive side are inscribed to simplify the
orientation
The measurement solution. www.burster.com
08.04.2015 / 8
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Balancing
•
Step 1: Clip on shaft caps
•
Step 2: Set into very slow rotation
•
Step 3: Oscillating motion
•
Step 4: Wait until it commutes to
standstill
•
Step 5: Grind off material on
bottom
•
Repeat until oscillations disappear
•
Balance Quality Grade
of at least G 6.3 according to DIN
1940-1
The measurement solution. www.burster.com
Shaft end caps with extra low
friction miniature ball bearing
08.04.2015 / 9
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Torque Calibration Equipment
M = r . m . glocal
Deadweight Tester #1
• Range:
± 0,05 Nm…± 5 Nm
• Lever arm r ≈ 0,1 m
• Weights
m = 50 g to 5 kg
Deadweight Tester #2
• Range:
± 5 Nm …± 250 Nm
• Lever arm r ≈ 1 m
• Weights
m = 0,5 kg to 25 kg
The measurement solution. www.burster.com
08.04.2015 / 10
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Torque Adjustment &
Calibration
Adjustment
• Each 8661 is adjusted digitally using the equipment
shown above
• Each 8661 comes with a test certificate
Calibration certificates (DIN 51309)
• Clarify customer’s acceptance
• In house lab: 0,05 Nm…250 Nm
DKD calibration certificates (ISO 17025)
• International recognition & acceptance
• Cooperation with external calibration laboratory
• Since 2010: New accreditation body: DAkkS
• DKD logo remains on calibration certificates
The measurement solution. www.burster.com
08.04.2015 / 11
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High Precision
•
Linearity up to +/- 0.05% F.S.
•
Hysteresis up to +/- 0,05% F.S.
•
Min. effect of temperature up to +/0,01% F.S./K
•
Accurate angle/speed measurement
0.09° (option)
The measurement solution. www.burster.com
08.04.2015 / 12
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Modular Assembly System
• Standard modules on
stock
• Real time adjustment of
the production volume
• Flexibility in the
assembly
• Expedited production
process
• Fast delivery time
The measurement solution. www.burster.com
08.04.2015 / 13
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Accessories
• 8661-Z010 External power supply unit
230 V AC to 12 V DC, 400 mA,
• 8661-Z00X Mounting rack
For range 0-0,05 Nm to 0-200 Nm
Central hole,
specific design
with two clips
for secured
cable fixation
• 8690 Metal Bellows Couplings
The measurement solution. www.burster.com
08.04.2015 / 14
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Target Market
Automotive and Industrial
Frictional torque
measurement on
bearings
Aviation and Electronic Industry
High sensitive rotary
switch testing
R & D in Laboratory
Micromechanics test
benches
The measurement solution. www.burster.com
Medical and Pharmacy
Biomechanical actuation
Power/Drive Engineering
High speed engines incl.
power measurement
Chemical Industry
Measure of viscosity in
chemical liquids
08.04.2015 / 15
honorary sales representative meeting 2011
Automation: Drive Testing
The measurement solution. www.burster.com
•
Final inspection for electric motors.
•
Torque, engine rotation speed as well as
performance has to be measured.
•
Vibration - proof construction allows
high - speed. Secured fixation using
mounting rack. On booth ends flexible
couplings.
•
0…± 10 V output signal or data logging/
visualization incl. mechanical
performance using DIGIVISION.
08.04.2015 / 16
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Automotive: Material Selection
Tappet
The measurement solution. www.burster.com
•
Fatigue test rig for camshaft and
tappet for materials selection
•
Surface fatigue and abrasive failure
due to a build-up of stress between
camshaft and tappet
•
Torque and rotation speed have to be
measured during the valve actuation
process
•
Correlation between measured force
and material fatigue
 optimized material selection
08.04.2015 / 17
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Car Industry:
Rotary Control Element
The measurement solution. www.burster.com
•
Labor / industrial test bench for final
inspection of air conditioner rotary
switch.
•
High sensitive torque and accurate
angle measurement.
•
Sensor fixed using a mounting rack,
flexible couplings balance bending
and angle misalignment.
•
Optimized torque transmission using
ball bearing.
•
Evaluation / visualization using 9307.
08.04.2015 / 18
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Car Industry:
Final testing on radio knob
08/04/15 The
- 19 measurement
solution. www.burster.com
•
As QC criteria a car
radio turn knob must be
within min/max of
specific torque range
•
Measure of torque
against angle at various
position
•
Low maximum torque
0.08Nm measured by
200mNm sensor
•
Accuracy : 0.0001Nm
for torque and 0.5 Deg
for angle
www.burster.com
honorary sales representative meeting 2011
Car Industry:
Testing on spindle drive for hand brake
08/04/15 The
- 20 measurement
solution. www.burster.com
•
Fatigue testing on spindle
drive of an electro-mechanic
hand brake for passenger car
•
Rotating torque measurement
(2*5 Nm range, 1*1 Nm range)
•
Simulation of real-life
operation; torque must
remain within min-max
tolerance band
•
Required accuracy 0.1Nm,
evaluation of values by
industrial PC and LabView
www.burster.com
honorary sales representative meeting 2011
Medical Engineering:
Test Benches for Dental Drills
Dental
Drill
The measurement solution. www.burster.com
•
Final inspection of dental drills.
•
Continuously measurement of
torque and rotation speed on high
dynamic engines
•
Vibration-proof construction allows
high-speed over 25000 rpm.
•
0…± 10 V signal or evaluation/
visualization incl. mechanical
performance using DIGIVISION
08.04.2015 / 21
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Cosmetic industry:
Final Testing of Lipstick Mechanics
08/04/15 The
- 22 measurement
solution. www.burster.com
•
Measurement of torque required to
open and close lipstick as important
QC criteria
•
100% test in automated production
line in Korea
•
4 torque measurements
simultaneously
•
Benefit:
 ensures the lipstick mechanics
function smoothly
www.burster.com
honorary sales representative meeting 2011
Latest features
USB – output for torque, speed/angle and
mechanical power incl. upgraded version of
DIGIVISION (evaluation software)
•Plug & Measure
•High sampling rate ,display up
to 16 channels (option)
•Limits, trigger, storage function
as well as archive viewer on
board.
•Power supply via the USB-port
(External power supply is not
required)
•DLL and LabView-driver for free
The measurement solution. www.burster.com
08.04.2015 / 23
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Latest features
Two-range Sensor with 2 measuring ranges
1:10 and 1:5/1:4 incl. option angle- and
speed measurement
•A single sensor for accurate measures in a very
wide torque range.
•Five fold overload protection for the smaller
measuring range and 1.5 fold overload protection
for the larger measuring range.
•No retooling time at all and only one coupling pair
is needed.
08.04.2015 The
/ 24 measurement
solution. www.burster.com
www.burster.de