
11.SPINDLE SPEED FUNCTION B-63943EN-1/02
- 1454 -
For acceleration/deceleration before interpolation for a Cs contouring
control axis used in interpolation type rigid tapping, the maximum
allowable acceleration rate that can be set is 100000 (deg/s
2
).
A setting for acceleration/deceleration of up to S1000 (min
-1
) (=
360000 (deg/min) or equivalent) with 60 (ms) is possible.
As the time constant for acceleration/deceleration after cutting feed
interpolation in the mode of acceleration/deceleration before
look-ahead interpolation (parameter No. 1769), the constant time type
is enabled.
- Bell-shaped acceleration/deceleration
When bit 0 (CTLx) of parameter No. 1610 is set to 0 and bit 1 (CTBx)
of parameter No. 1610 is set to 1, bell-shaped
acceleration/deceleration of constant acceleration/deceleration type
can be applied.
In parameter No. 1622, set the sum of the time constants for the linear
and curved portions.
NOTE
1 In three-dimensional rigid tapping, bell-shaped
acceleration/deceleration is disabled, and linear
acceleration/deceleration is used.
2 The setting of a time constant differs from normal
rigid tapping.
11.12.5 Override
The same descriptions as for normal rigid tapping are applicable. See
Subsection, "Override".
11.12.6 Reference Position Return
When bit 0 (ORI) of parameter No. 5202 is set to 1, a spindle
reference position return operation can be performed at the start of
rigid tapping.
When a movement is made to a R point in the rigid tapping mode, the
reference position return direction is determined on the serial interface
spindle side for reference position return. With the grid shift function,
the reference position can be shifted within the range -360° to 360°.
Set a reference position return direction in bit 3 (CSO) of parameter
No. 4000. Set a grid shift amount in parameter No. 4135.
NOTE
A feedrate for reference position return is
determined from the position where the tool is
stopped when the rigid tapping mode is set, and the
amount of travel found from the reference position.
Accordingly, no fixed speed is applied.