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Abstract:
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Currently, weaving machines are maintained through
preventive maintenance on a fixed cycle. This is effective
in ensuring long lifetimes of the machines, but individual
machines need extra maintenance attention to control their
flag rates.
The overall average flag rate during the preventive
maintenance cycle was constant. The average flag rate of
all machines which passed through early weeks of the
preventive maintenance cycle had the same flag rates as
machines passing through weeks late in the cycle.
There were individual machines which showed low
reliability soon after preventive maintenance. There were
also machines which showed high reliability while
approaching the end of the PM cycle. The majority of the
machines behaved in an inconsistent pattern.
Tracking individual machines' behaviors while
progressing through the preventive maintenance cycle would
provide a tool for determining those machines which need
individual maintenance attention. This is required because
each machine has its own individual environment. This
includes the style being produced, technician assigned, and
location in the weave room.
For a maintenance program to be most effective it must
be timely. Treating machines as individuals will allow the
management of a weaving operation to provide each machine
with maintenance to reduce its flag rate at a time when it
is most needed.
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