Assignment on vehicle Gear Design

Running Head: GEAR DESIGN
GEAR DESIGN
Name
Institute of Affiliation
Date

GEAR DESIGN 2
The detailed design developed by the ANSYS design software
Frontal view
Isometric view

GEAR DESIGN 3
Reliability = 99%
Operation time = 1000 hrs
Motor housing = 22 mm
Reduction ration = 12:1
Pressure angle = 200
Pitches per inch diameter = 100, 80, 64, 48, 32, 24, 20, 16, 12, 10, 8, 6 teeth
UTS = 300, 000 Psi
Hardened = 400 BHN
The design in the study is of a 2 stage speed reduction system
Assumed rotation speed of motor= 1000 rpm
The number of teeth picked for the first gear in stage 1 is 64 teeth.
a. First stage reduction
From the above information, the first gear, the one attached to the motor shaft, is 22 mm
( 0.87 in). the torque transferred to gear 2 of first stage will be 2/3 of that supplied by motor.
The factor of safety, f s, is 1.5
ω= 2 πN
60 Equation 1
= 2 π∗1000
60

GEAR DESIGN 4
= 105 rad/sec
Also, the gear head will be coupled with CVT.
Power = torque * angular velocity Equation 2
Torque = power
angular velocity
= 6 w
105rad /sec
= 0.0572 N/m
The speed of gear 2 of stage one
p=ω1∗T 1=ω2∗T 2 Equation 3
6 = 2
3∗¿(0.0572) * ω2
ω2=157.3
≈ 158 rad/sec
The number of teeth in gear 2 of stage 1 is as follows
ω1
ω2
= T2
T1
105
158 = T 2
64
T 2=96