The
aim
of
this
study
is
to
investigate
the
bending
moment
in
milling
and
the
changing
process
of
the
shape,
moreover,
to
consider
the
interconnection
between
the
shape
and
the
level
of
tool
runout
and
wear.
This
study
proposes
a
bending
moment
model
of
a
wireless
sensory
holder
on
the
basis
of
cutting
force
and
examine
the
connection
between
tool
runout
and
wear.
The
bending
moment
model
signal
presented
as
a
polar
plot
(shuriken-like
shape)
is
verified
through
experiments
under
various
cutting
conditions,
so
as
to
extend
the
practicality
of
this
model.
In
addition,
a
monitoring
method
of
tool
runout
and
wear
state
through
the
polar
plot
of
the
bending
moment
is
presented
in
this
study,
based
on
the
interaction
between
polar
plot,
tool
runout
and
wear.
As
the
research
results
show
that
significant
features
are
reveal
in
the
asymmetry
level
and
the
rotation
angle
of
the
polar
plot
due
to
tool
runout
and
wear
respectively.
Compared
with
the
current
threshold
method,
the
pattern
recognition
method
proposed
in
the
study
can
effectively
indicate
the
tool
runout
and
wear
level,
without
being
affected
by
the
magnitude
of
the
process
signal
value.
Keywords:
Cutting
bending
moment;
Tool
runout;
Tool
wear;
Tool
monitoring;
End-
milling
