Automation Canada - Machine Safety - 23

OVERALL ENVIRONMENT
While robots are extremely effective at tackling risk-intensive tasks,
they can also pose their own set of concerns that should be addressed
before operation. Part of this includes being sure the general
workspace is robot friendly. There should be no presence of things like
explosives or falling hazards, like a typical welding environment. If
tripping on robot cables or slipping on weld spatter is a concern, be
sure to implement the proper peripherals needed to mitigate those
risks.
ROBOT STABILITY
With any robot, it is an absolute must that a collaborative robot base
or cart is properly secured per the supplier's standards. Doing this
should confirm the proper center of gravity, so that the robot cannot
slip. Where carts are concerned, wheels should be locked tightly to
prevent any movement (or oscillation) as the robot is trying to weave.
ROBOT MOVEMENT
Extremely important to the success of an application is the robot's
ability to move freely from point to point, while adhering to the utmost
safety. It is highly suggested to use a cable management device for
torch cable protection. This will alleviate cable interference during
programming, as well as prevent false PFL stops on the robot. Either an
on-arm device or a cable balancer for overhead cable management is
ideal. The latter can help expand the robot work area, as needed.
Something else to be mindful of is sharp wire. Workers and
bystanders need to be clear of the work zone during the weld process
to avoid collision and potential harm. Likewise, workers should not
attempt to hold a weldment in place or grab it while the robot is
moving.
SAFE FIXTURING
As always, to achieve the best part quality in the safest way possible,
CANADIAN AUTOMATION
VOLUME 4, ISSUE 2
23

Automation Canada - Machine Safety

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