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Numerical - Axial pitch, given normal module & helix angle
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Design of Machine Elements - 2
Q. What is the axial pitch for helical gears if helix angle is 25
o
and normal module is 7?
- Published on 23 Sep 15
a.
50.55 mm
b.
52.03 mm
c.
32.15 mm
d.
11.31 mm
ANSWER: 52.03 mm
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Discussion
Sravanthi
-Posted on 28 Sep 15
Given: Ψ = 25
o
& m
n
= 7
Axial pitch = (π m
t
) / (tan Ψ)
Transverse module (m
t
) = Normal module (m
n
) / cos Ψ
= 7 / cos 25
= 7.7236 mm
Therefore, axial pitch = (π x 7.7236) / tan 25
= 52.03 mm
➨
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