11.2 Reference Information for Servomotor Capacity Selection
11.2.4 Application Examples by Type of Application
11-8
Continued from previous page.
Machine Configuration
Roll Feeder
Rack and Pinion
Load Speed, N (min
-1
)
Speed Calculated at
Motor Shaft, N
M
(min
-1
)
R
×
N
R
×
N
Linear
Motion
Section,
GD
2
(kg
m
2
)
GD
2
Cal-
culated at
Load Shaft
GD
2
L
Cal-
culated at
Motor
Shaft
Load
Torque
(kg
m)
T
Calcu-
lated at
Load Shaft
T
L
Calcu-
lated at
Motor
Shaft
Load Moving Power, P
O
(kW)
Load Acceleration
Power
Starting Torque, T
P
(kg
m)
Deceleration Torque, T
S
(kg
m)
Effective Torque Value,
Trms (kg
m)
System Remarks
•
Feeding of coiled and sheet materials
•
Roller slipping affects accuracy.
•
A measuring roller pulse generator
may also be installed separately.
•
Can be used for positioning with long
travel distances.
•
A separate pulse generator is often
installed.
Continued on next page.
Bearing friction
coefficient
Applied pressure, N (kg)
Tension, F
1
(kg)
1/R
W(kg)
μ
2
μ
1
dp(mm)
φ
Number of teeth, Z
P
Pitch, L
P
(mm)
F
V
(kg)
F
H
(kg)
1/R
dp(mm)
W(kg)
μ
φ
[However, =
π
]
P
B
P
B
d
P
V
1000
×
Load speed (m/min)
P
B
P
B
d
P
V
1000
×
Load speed (m/min)
However, =
π
P
B
L
P
Z
P
OR =
d
P
1000
W
( )
2
d
P
1000
W
( )
2
OR
×
( )
2
2
L
GD
V
N
M
π
W
( )
2
R
1
×
( )
2
2
L
GD
V
N
M
π
W
( )
2
R
1
OR
( +
μ
1
+
μ
2
)
F
1
W
N
d
P
2000
{
μ
(W+ )+ }
F
V
F
H
d
P
2000
2
π
η
( +
μ
1
+
μ
2
)
V
N
M
OR
T
×
×
R
1
1
η
Mechanical
efficiency
F
1
W
N
V
F
V
F
H
N
M
{
μ
(W+ )+ }
OR
T
×
×
R
1
1
η
2
π
η
Mechanical
efficiency
( +
μ
1
+
μ
2
)
6120
× η
V
F
1
W
N
{
μ
(
ޓ
+
ޓ
)+
ޓ
}
V
W
F
V
F
H
6120 ×
η
t
a
GD
2
N
2
365
×
10
3
×
Acceleration time (s)
t
a
GD
2
N
2
365
×
10
3
×
Acceleration time (s)
( + )
( + )
T
P
T
L
T
t
a
t
c
t
d
V (m/min)
T
P
T
L
=
+
t
a
GD
2
M
N
M
GD
2
L
375
T
S
T
L
=
-
t
d
GD
2
M
N
M
GD
2
L
375
( - - )+
T
rms
=
+
T
T
P
2
T
L
2
+T
S
2
t
a
t
c
t
d
T
rms
=
+
T
T
P
2
T
S
2
T
L
2
T
t
a
t
a
t
d
t
d
When a load torque is applied while stopped for a vertical ball screw:
