B–63503EN–1/01
7. FEEDRATE CONTROL/ACCELERATION
AND DECELERATION CONTROL
272
This function automatically controls the feedrate during corner
machining according to the angle of a corner made by machining blocks
or according to the feedrate difference for each axis.
This function is enabled when G64 (machining) mode is selected and
deceleration of the first of two consecutive cutting feed blocks is
executed.
Feedrate control can be performed according to the angle of a corner made
by machining blocks or according to the feedrate difference for each axis.
The desired method is selected by specifying the corresponding value in
the CSD bit (bit 4 of parameter No. 1602).
If the angle made by blocks A and B is smaller than that specified in parameter
No. 1740 (for the selected plane), and if the feedrates along the first and second
axes on that plane are lower than that specified in parameter No. 1741, the
system executes block B, assuming that no pulses are accumulated.
The figure shows the relationship between feedrate and time when a
corner angle is smaller than the angle specified in the parameter.
At time t, some accumulated pulses remain, as indicated by the shaded
part. The system, however, starts the next block because the feedrate of
the automatic acceleration/deceleration circuit is lower than that specified
in the parameter.
Time
Feedrate specified in
parameter No. 1741
Feedrate
t
Block A
Block B
#7
1601
#6
ACD
#5 #4 #3 #2 #1 #0
[Data type] Bit
7.1.10
Automatic Corner
Deceleration (M series)
General
Feedrate control
according to corner
angle
D Overview
D Parameter