
9.SPINDLE FUNCTION B-63783EN-1/01
- 904 -
Rigid Tapping Specification
- Feed rate
In rigid tapping mode, the tapping axis is fed at a rate specified by F;
the spindle speed is S times 360(deg/min). Override is invalid for both
of them.
The speed of extraction can be overridden by 1% to 200% depending
on the override value set in parameter No. 5883.
CAUTION
The thread pitch of the tapper must equal the pitch (F,
S) specified in a program. If they do not match, the
tool or workpiece may be damaged.
- Acceleration and deceleration
Exponential acceleration/deceleration or linear acceleration/
deceleration can be applied to rigid tapping. This is selected by bit 1
(TEL) of parameter No. 5605.
The time constant can be changed in four steps, according to the
specified spindle speed, by setting bit 2 (TSC) of parameter No. 5605.
Parameters used when the time constant is not changed
Time constant (TC) FL feedrate (FL) Spindle speed (S)
5751 5752 5757
cceleration/
deceleration
time
cceleration/
deceleration
time
TC TC
SSS command S command
Linear acceleration/deceleration Exponential acceleration/deceleration
Parameters when the time constant is changed
Step (n) Time
constant
(TCn)
FL feedrate
(FLn)
Spindle
speed (Sn)
Applicable
speed
1 5884 5885 5886 S ≤ S1
2 5887 5888 5889 S1 < S ≤ S2
3 5890 5891 5892 S2 < S ≤ S3
4 5893 5894 - S3 < S