blob: b92ae125baaef8bb6ba18c685d3add2871eb6b52 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
-->//(Power Screws) Example 6.7
-->//Speed of the tool holder v (m/min)
-->v = 5
v =
5.
-->//Number of starts of the screw n
-->n = 1
n =
1.
-->//Nominal diameter of the screw d (mm)
-->d = 48
d =
48.
-->//Pitch of the screw p (mm)
-->p = 8
p =
8.
-->//Force exerted by operating nut W (N)
-->W = 500
W =
500.
-->//Mean radius of the friction collar rm (mm)
-->rm = 40
rm =
40.
-->//Coefficient of friction at thread and collar surfaces mu
-->mu = 0.15
mu =
0.15
The power required to drive the screw(kW) = 0.347319 kW
Efficiency of the mechanism(eta) = 11.996655 percent
|
