
B–63173EN–1/01
7. FEEDRATE CONTROL/ACCELERATION
AND DECELERATION CONTROL
263
To prevent a mechanical shock, acceleration/deceleration is automatically
applied when the tool starts and ends its movement (Fig. 7.2.1).
F
R
Rapid traverse rate
Time
T
R
T
R
F
R
: Rapid traverse rate
: Acceleration/
deceleration time
constant for rapid
traverse rate
Time
Cutting feedrate
F
CF
C
T
C
T
C
T
R
T
C
: Cutting feedrate
: Acceleration/
deceleration time
constant for a cutting
feedrate
Fig. 7.2.1 Automatic acceleration/deceleration (example)
Acceleration and deceleration is performed when starting and ending
movement, resulting in smooth start and stop.
Automatic acceleration/deceleration is also performed when feedrate
changes, so change in speed is also smoothly done.
It is not necessary to take acceleration/deceleration into consideration
when programming.
Rapid traverse:Linear acceleration/deceleration (time constant per axis is
set by parameter 1620)
7.2
ACCELERATION/
DECELERATION
CONTROL
7.2.1
Automatic
Acceleration/
Deceleration
General
D Automatic acceleration/
deceleration