
11.SPINDLE SPEED FUNCTION B-63943EN-1/02
- 1442 -
CAUTION
4 Program restart
The program cannot be restarted in a block placed in the rigid tapping mode. (The
program cannot be restarted in blocks between an M29 command and G80
command.)
5 Specification of multiple M codes in one block
Specify an M code for specifying the rigid tapping mode as an independent M code.
(Multiple M codes must not be specified in one block.)
- Position control loop gain switching and serial spindle parameters
In rigid tapping, the loop gain of the drilling axis is switched so that
the loop gains for position control of the drilling axis and spindle
match each other.
This switching processing is specified by parameter Nos. 5281 to
5284.
The spindle loop gain depends on the setting of serial spindle
parameters and the input gear signals (CTH2, CTH1).
So, in order to perform rigid tapping with a serial spindle, the position
control loop gain of the spindle must be set in the parameters for the
serial spindle used for rigid tapping.
When multi spindle control is used, a spindle other than the first
spindle can be used for rigid tapping. So, set the parameters below for
the serial spindle used for rigid tapping.
The parameters indicated below are the major serial spindle
parameters required for the setting and adjustment needed to use a
serial spindle.
For details of the serial spindle parameters, refer to the "FANUC AC
SPINDLE MOTOR αi series DESCRIPTIONS (B-65272E)" or
"FANUC AC SPINDLE MOTOR αi series PARAMETER MANUAL
(B-65280EN)".
4044 Proportional gain of the velocity loop in servo mode (gear 1, gear 2)
4045 Proportional gain of the velocity loop in servo mode (gear 3, gear 4)
[Unit of data]
[Valid data range] 0 to 32767
Set a proportional gain for the velocity loop in a servo mode (such as
rigid tapping mode).
4052 Integral gain of the velocity loop in the servo mode (gear 1, gear 2)
4053 Integral gain of the velocity loop in the servo mode(gear 3, gear 4)
[Unit of data]
[Valid data range] 0 to 32767
Set an integral gain of the velocity loop in a servo mode (such as rigid
tapping mode).