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Ordinary Gear Trains
1
Ordinary Gear Trains
1. The ordinary gear train considered in Fig. 1 has gears with the same
module
m
= 24 mm. Gear 1 has
N
1
= 22 teeth, gear 2 has
N
2
= 18 teeth,
gear 3 has
N
3
= 20 teeth, and gear 4 has
N
4
= 54 teeth. Gears 3 and 3
0
are ﬁxed on the same shaft. The gear 1 rotates with an input angular speed
n
1
= 290 rpm. The pressure angle of the gears is 20
◦
. Find the angular
velocity of the output gear 4,
ω
4
.
X
X
X
A
B
C
D
F
G
1
0
2
3
3’
4
0
X
X
0
0
Figure 1: Problem 1
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View Full DocumentOrdinary Gear Trains
2
2. An ordinary gear train is shown in Fig. 2. Gear 1 has
N
1
= 11 teeth,
gear 2 has
N
2
= 22 teeth, gear 2
0
has
N
2
0
= 17 teeth, gear 3 has
N
3
= 51
teeth, gear 3
0
has
N
3
0
= 12 teeth, and gear 4 has
N
4
= 32 teeth. Gears 2 and
2
0
are ﬁxed on the same shaft and gears 3 and 3
0
are ﬁxed on the same shaft.
The centers of the gears 1 and 3 are located on the same horizontal axis.
Gear 1 rotates with an input angular speed of
n
1
= 550 rpm. The diametral
pitch of the gears is 4 and the pressure angle of the gears is 20
◦
. Find the
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 Summer '08
 Gabale,A

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