SMC Networks MY3A Series, Руководство пользователя, Страница: 13 / 27

5
6
Calculation of Guide Load Factor
MY2H/M
1
100 200 300 400500 1000 1500
Piston speed mm/s
Moment
N
⋅
m
20
1
2
3
4
5
10
30
50
40
60
MY2H/M
3
100 200 300 400500 1000 1500
Piston speed mm/s
Moment
N
⋅
m
20
10
4
5
3
2
1
30
50
60
MY2H/M
2
100 200 300400 500 1000 1500
Piston speed mm/s
Moment
N
⋅
m
10
1
20
30
50
60
5
4
3
2
0.2
Load mass
kg
50
60
40
30
20
10
5
4
3
2
1
100 200 300 400500 1000 1500
MY2H/
m
3
Piston speed mm/s
Load Mass Allowable Moment
Calculation of Load Factor for Dynamic Moment
Sum and Examination of Guide Load Factors
Equivalent load F
E
at impact
F
E =
x
υ
a x g x m = x 300 x 9.8 x 7.525 = 309.7 (N)
M
1
E :
Moment
M
1
E
max (from 4 of graph MY2H/ M
1
where 1.4
υ
a = 420 mm/s) = 42.9 (N·m)
M
1
E =
x F
E
x Z = x 309.7 x 38.1 x 10
-
3
= 3.93 (N·m)
Load factor
α
4
= M
1
E /
M
1
E
max = 3.93/42.9 = 0.09
M
3
E :
Moment
M
3
E
max (from 5 of graph MY2H/ M
3
where 1.4
υ
a = 420 mm/s) = 42.9 (N·m)
M
3
E =
x F
E
x Y = x 309.7 x 53.6 x 10
-
3
= 5.53 (N·m)
Load factor
α
5
= M
3
E
/M
3
E
max = 5.53/42.9 = 0.13
1
3 1
3
1
3 1
3
1.4
100
1.4
100
M
3
: Moment
M
3
max (from 3 of graph MY2H/ M
3
) = 60 (N·m)
M
3
=
m
3
x
g x X = 7.525 x 9.8 x 140.1 x 10
-
3
= 10.33 (N·m)
Load factor
α
3
= M
3
/ M
3
max = 10.33/60 = 0.17
m
3
M
3
X
M
1
E
M
1
F
E
Z
MY2H40
MY2H25
MY2H16
MY2H40
MY2H25
MY2H16
MY2H40
MY2H25
MY2H16
MY2H40
MY2H25
MY2H16
M
3
F
E
Y
M
3
E
Σα
=
α
1
+
α
2
+
α
3
+
α
4
+
α
5
= 0.57
≤
1
The above calculation is within the allowable value and the selected model can be used.
Select a separate shock absorber.
In an actual calculation, when the sum of guide load factors
Σα
in the formula above is more than 1, consider decreas-
ing the speed, increasing the bore size, or changing the product series. Also, this calculation can be performed easily
with the “SMC Pneumatics CAD System”.
q
r
w
e
t
1097
Mechanically Jointed Rodless Cylinder
Series
MY2
MY3A
MY3B
MY1B
MY1M
MY1C
MY1H
MY1HT
MY1 W
MY2C
MY2H
MY3M
Individual
-X
D-
-X
Technical
data
P1057-P1120-E.qxd 08.10.3 2:27 PM Page 1097
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