YASKAWA SGMMV, Руководство по эксплуатации продукта

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11.2 Reference Information for Servomotor Capacity Selection
11.2.4 Application Examples by Type of Application
11
Appendices
11-7
11.2.4 Application Examples by Type of Application
Machine
Configuration
Rotating Body Horizontal Ball Screw Vertical Ball Screw
Load Speed, N
(min
-1
)
N
Speed Calculated at
Motor Shaft, N
M
(min
-1
)
R
×
N 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
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 –
• The gear backlash is a
problem.
• Suitable for applications
for which increasing sys-
tem speed is not required.
• A large torque can be
generated by a small
motor.
• Falling when W
1
≠
W
2
•
Brake timing
Continued on next page.
Gear ratio
1/R
Friction
coefficient
Pitch:
P
B
(mm)
1/R
μ
W(kg) F
v
(kg)
F
N
(kg)
Pitch: P
B
(mm)
1/R
W
1
(kg)
W
2
(kg)
F
H
(kg)
F
V
(kg)
μ
P
B
V
1000
×
Load speed (m/min)
P
B
V 1000
×
Load speed (m/min)
P
B
1000
π
W
(
ޓޓ
)
2
P
B
1000
π
W
( )
[However, W=W
1
+ W
2
]
2
×
( )
2
2
L
GD
R
1
OR
W
( )
×
( )
2
2
L
GD
V
N
M
π
2
R
1
W
( )
×
( )
2
2
L
GD
R
1
V
N
M
π
2
OR
W=W
1
+ W
2
However,
{
μ
(W+ )+ }
F
V
F
H
P
B
2000
π
{
μ
+ - + } F
V
W
1
W
2
F
H
P
B
2000
π
T
× ×
R
1
η
1
Mechanical efficiency
{
μ
(W+ )+ }
V
F
V
F
H
N
M
T
× ×
R
1 1
η
2
π η
Mechanical
efficiency
OR
{
μ
+ - + } V
N
M
OR
2
π η
T
× ×
R
1 1
η
Mechanical
efficiency
F
V
W
1
W
2
F
H
T N
973
× η
{
μ
( + )+ } V W F
V
F
H
6120
× η
{
μ
+ - + }
6120
× η
V F
V
W
1
W
2
F
H
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
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: