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Industrial six-axis robots perform intricate, repetitive
movements that greatly improve productivity and
throughput. The end-of-use tool on these robots
require power, data and other media to be supplied
through cables that run on the outside of the
robot. These cables must bypass each axis of
the robot using a secondary cable management
system. Here, incredibly complex movement can
be achieved, but only if high-performing cables and
cable management systems are used.
Robotic cable management
Modern, flexible cables for torsional motion
In respect to continuous flexing applications, the three types of movement include linear, torsional and multi-
axis (free movement). The end-of-use tools on robots require all the same types of electrical requirements
as a linear system, but a cable designed for linear movement should never be used for robotic applications.
From the outside, a linear and torsional cable look the same. The unseen difference is the construction and
special design of the torsional cable. Torsional cables should always be used on robots, as they are able
to bend more than 180˚, absorb strain and extend the life cycle of the cable.
Cable failure can eliminate productivity achieved through automation, which presents one of the biggest
issues with robotic cable management—it is often the last step to be taken in the design process. Six-axis
robots have multiple movement profiles and several points that must be considered when routing cables
for the end effector. The rotational capabilities of the sixth-axis alone require a cable that can withstand
torsional forces. A cable designed especially for robotic movements should be considered in the early
stages of development.
The cable carrier used in industrial robots must allow cables to move freely within and remain dynamic
while the robot is in motion. There are many traditional cable management systems that bind cables
together, which restricts movement and creates points of stress, therefore accelerating cable failure. Poor
cable management combined with a cable unsuitable for torsional robotic movements can also cause
early cable failure and unwanted downtime.
