Smart Couplings Remove Guesswork from Measurements in Machinery Applications
<p style="text-align: center;"><img title="1594266090260342.png" alt="6.png" src="/ueditor/php/upload/image/20200709/1594266090260342.png"/></p><p>Quite often, the collection of precise data in
drive technology applications can be problematic. Data monitoring in a rotating drivetrain is difficult because a direct networking cable connection is often not an available option. Nothing sends shivers down
the spine of for example, a production line manager or a
system integrator like uncertainty. That¡¯s why achieving
precise measurement of things like torque and other parameters in machinery applications is, while daunting, a
dearly desired goal, especially if those measurements are
only available at the drive and motor. Accordingly, couplings used in machinery and other applications today are
being developed with a ¡°smarts¡± and ¡°intelligence¡± never
seen before in such hardware. Coupling manufacturers are
now producing couplings with leading edge measuring capabilities by virtue of adding sensors and software to the
equation. These custom coupling are thus creating a new
paradigm in manufacturing by enabling the wireless transmission of mechanical data from directly within components like, for example, a rotating drivetrain.
Call it ¡°smart¡± or ¡°intelligent¡± coupling (take your pick),
this new technology provides a coupling system with
measurement capabilities that are taken directly in the
drivetrain, providing enhanced data acquisition and enhanced transparency in the drivetrain in a timely manner.
Following in much greater detail is a discussion regarding this latest advance in coupling technology. Our
responders include: Andy Lechner (AL), VP-Sales &
Marketing of R+W; Todd Lehman (TL), sales manager,
Coupling and Drive Technologies, Voith Turbo North
America and Christopher Hoeweler (CH), condition monitoring expert, Voith Digital Ventures; Tim Nageli (TN),
global sales manager-mill products-Ameridrives and
Mark O¡¯Neil (MO), chief principal engineer, Altra
Couplings; and Ralf Epple (RE), product manager at Mayr
Power Transmission
in Mauerstetten.</p><p><br/></p><p>In drive technology, why is accurate measurement of torque
and other parameters in machinery (drivetrain) applications
so important?
Andy Lechner (AL)/R+W: All components in a mechanical drive line have limits to the amount of torque they
can withstand before failure, and as machine designs are
continually optimized for size and weight, while running
faster, the margin of safety from torque overload is becoming smaller. Conditions detrimental to machine performance such as wear, misalignment, loss of lubrication and
binding of workpieces all increase the amount of torque
required to make the machine move. So an accurate measurement of the torque being applied at key locations in
the drive line can be essential to condition monitoring and
predictive maintenance. Similarly, vibration can be caused
and exacerbated by these same detrimental conditions, as
can the axial force applied to shafting as a result of movement and heat generation. Having the ability to measure
changes in these parameters is also useful in monitoring
the overall health of rotating equipment.
In other instances, particularly in the process industry,
changes in the density and viscosity of materials being
mixed, pressed, pumped or extruded can manifest themselves as changes in the torque required to drive the process. Here too, accurate measurement of torque can aid
engineers in optimizing quality and throughput.
Todd Lehman/Christopher Hoeweler (TL/
CH) Voith: Remote monitoring of equipment provides operators and equipment manufacturers the
ability to see what¡¯s happening with the drive chain.
This visibility allows
operators to make
strategic decisions about the
operation of the
machine and
the process</p><p>that it is performing. The accuracy and timeliness of the
measurement will provide the operator the ability to maximize machine productivity without exceeding individual
drive chain component capacities. In addition, equipment
monitoring can provide the ability to produce trend data
for each monitored component of the drive chain. This can
help operators make decisions about the health of each
drive component allowing them to order spare parts in
preparation for repair.
A good example is our OnCare.Health ACIDA¡ªReport
generator. The measurement is not only dependent on the
accuracy but also on the reliability of gathering the data. It
is important to trust the data to make decisions on actions
improving maintenance or operations.
It is also noted that the torque signal is also carrier of
health information of the driveline. Tracking natural frequencies, for instance, allows the ability to pinpoint
changes in the system characteristics which may have
been caused by rotor cracks.</p>
09 Jul,2020