Design
an
e-drive
transmi
ssion gear
, it is very crucial, to
understand the
failure modes since
gears
should
be sized
correctly
to
withstand loads
that will expect
to act on the gear teeth and make sure that still be within reasonable
load-carrying capacity, compact
and
light
weight.
Fatigue failure can happen on gears under repeated loading due to fatigue such as tooth root
bend
ing and contact stress
of
gear.
M
aterials used in this study
were two candidate alloy steels of
Cr-Mo and Cr-Mo-Ni
and
methods employed to
design
the
e-drive
transmission gear were
by iteration through KISSsoft
gear simulation software as well as
AGMA
of
Matlab script, it approaches various parameters such as
helix angle,
face-
width
,
and input torque
.
Investigations
on
safety factors of
root
bending and contact
,
stresses of
contact and bending
, weight, compactness,
qui
e
t
and smooth functioning
have been done
by altering
the variable design parameters
.
To conclude that
by
increasing face width and helix
angle both
safety factors were increased
uniformly
regardless of the in
put torque
as
we
calculated by
both
approaches.
Similarly
,
the
results showed that
by
increasing
the
helix angle and face width
it
brings
to
reduce
the
contact
and bending stress
es
of transmission gear
.
As we
comparing
the
results
, the KISSsoft values are
a
little
higher than
the analytical (AGMA) values as proven
in all fatigue
of
safety factors versus
variable gear design parameter.
Based on the sa
fety factor, compactness, light
weight and
quiet for smooth function
of the
designed
e-drive
mating
gears
are proven as the
face
width is 24.5 mm and
the
helix angle is
25
o
.