
11. PROGRAM COMMAND
B–63833EN–1/02
702
The cutting feedrate programmed with the F word is changed during the
second and subsequent cutting operations. Parameter Nos. 5166 and
5167 specify the ratio of change for the case in which a skip signal was
received during the previous cutting operation and the case in which no
skip signal was received during the previous cutting operation,
respectively.
Cutting feed rate = Fă a
(First time) a = 1.0
(Second and subsequent times) a = a b B 100
(where b is the ratio of change for the first time)
Skip during the previous cutting: b = b1% (parameter No. 5166)
No skip during the previous cutting: b = b2% (parameter No. 5167)
The feedrate is not changed when the ratio a becomes less than the ratio
specified in parameter No. 5168. The upper limit to the newly specified
cutting feedrate is the maximum cutting feedrate.
The spindle speed programmed with the S word is changed during the
second and subsequent cutting operations. Parameter Nos. 5164 and
5165 specify the ratio of change in which a skip signal was received
during the previous cutting operation and in which no skip signal was
received during the previous cutting operation.
Spindle speed = Să g
(First time) g = 1.0
(Second and subsequent times) g = g d B 100
(where d is the ratio of change for the first time)
Skip during the previous cutting: d = d1% (parameter No. 5164)
No skip during the previous cutting: d = d2% (parameter No. 5165)
If the spindle speed is set at the lower limit, then it is not changed. The
upper limit to the newly specified spindle speed is the maximum S analog
data.
[Classification] Input signal
[Function] Retracts a tool if an overload torque occurs.
[Operation] When this signal becomes “1”, the control unit operates as follows:
S Retracts the tool, and changes the spindle speed and cutting feedrate,
then continue machining.
S This signal is valid, when the drill axis is between points R and Z and
is moving forward or cutting.
D Changing of cutting
feedrate
D Changing of spindle
speed
Signal
Overload torque signal
SKIP<X004#7>