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-->//(Power Screws) Example 6.1
-->//Number of starts n
-->n = 3
n =
3.
-->//Nominal diameter of screw d (mm)
-->d = 50
d =
50.
-->//Pitch of the screw p (mm)
-->p = 8
p =
8.
-->//Collar outer diameter Do (mm)
-->Do = 100
Do =
100.
-->//Collar inner diameter Di (mm)
-->Di = 65
Di =
65.
-->//Coefficient of friction mu
-->mu = 0.15
mu =
0.15
-->//Load to be raised W (kN)
-->W = 15
W =
15.
-->//Force applied at radius rad (mm)
-->rad = 500
rad =
500.
Torque required to raise the load(Mtt) = 204644.140833 mm
Torque required to lower the load(Mlt) = 87401.514671 mm
Force at 500mm radius required to raise the load(Pi) = 409.288282 N
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