10. SPINDLE SPEED FUNCTION
B-64693EN-1/01
- 1818 -
Acceleration/deceleration control
-
Acceleration/deceleration after interpolation
In rigid tapping with servo motor, unlike the conventional type of
rigid tapping, it is possible to apply linear acceleration/deceleration of constant acceleration/deceleration
time type and bell-shape acceleration/deceleration.
Resetting bit 0 (SRBx) of parameter No. 11001 to 0 makes it possible to apply linear
acceleration/deceleration after interpolation of constant acceleration time type. Setting the bit to 1 makes
it possible to apply bell-shape acceleration/deceleration after interpolation of constant acceleration time
type.
The time constant for each gear is specified in parameters Nos. 11060 to 11063. If bit 2 (TDR) of
parameter No. 5201 = 1, the tool extraction time constant for each gear is specified in parameter
Nos. 11065 to 11068. Specify each of these parameters for the live tool axis used in rigid tapping.
The acceleration/deceleration types and time constants used for drilling axes are set to the same values as
for live tool axes.
NOTE
Time constants specified for rigid tapping with servo motor are different from
those for the conventional type of rigid tapping.
Example: Parameter settings are: Time constant (TC) = 800 msec and speed (S) = 4000 min
-1
min
-1
4000
msec
800
800
-
Acceleration/deceleration before interpolation
If AI contour control I or II can be used in rigid tapping with servo motor, issuing a rigid tapping
command in the "acceleration/deceleration before look-ahead interpolation" mode makes it possible to
apply acceleration/deceleration before look-ahead interpolation to this type of rigid tapping.
Acceleration/deceleration before look-head interpolation is effective when the AI contour control mode is
ON. For details, see the Subsection of "AI Contour Control I and AI Contour Control II."
Parameter No. 11050 is used to specify the maximum allowable acceleration value for
acceleration/deceleration interpolation used in rigid tapping. Parameter No. 11051 is used to specify the
acceleration change time for look-ahead bell-shape acceleration/deceleration before interpolation. As for
look-ahead acceleration/deceleration before interpolation used in rigid tapping, the maximum allowable
acceleration value is 100000 (deg/s
2
).
It is possible to change a speed of up to S1000 (min
-1
) (equivalent to 360000 (deg/min) in 60 (ms).
The time constant (parameter No. 11052) for cutting feed acceleration/deceleration after interpolation
usable in the "look-ahead acceleration/deceleration before interpolation" mode is a constant-time type.