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9. CHARACTERISTICS
Vo
L max
t1
t2
60
Where,
L max : Maximum coasting distance
Vo:
Machine's fast feed speed
t
:
Delay time of control section
1
t
:
Braking delay time of brake (Note)
2
t
:
Braking time
3
t
3
9.55
JL
: Load inertia moment converted into equivalent
value on servo motor shaft
JM
: Servo motor inertia moment
No
: Servomotor speed during fast feed
TL
: Load torque converted into equivalent
value on servo motor shaft
TB
: Brake static friction torque (Note)
Note: t
and TB are the values noted in Table 9-2 Characteristics. JL is the machine's inertia moment
2
at the servo motor shaft.
t3
2
(J
J ) No
L
M
4
10
(T
0.8T )
L
B
9 - 8
(9-2)
[mm]
[mm/min]
[sec]
[sec]
[sec]
[kg cm
]
2
[kg cm
]
2
[r/min]
[N m]
[N m]
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