YASKAWA SIEMENS CNC Series, Руководство по обслуживанию, Руководство для служащего по обслуживанию

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14.3 Motion Control
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14.3.16 Rigid tap
YS 840DI system tapping function "Rigid Tap" is permitted with the interpolation control of
the spindle and the feed axis, which is different from the conventional system.
In this case, to lessen the synchronicity errors, the position loop gain of feed axis (generally
Z axis) and the position loop gain of spindle must be identical.
Therefore, when the rigid tap is enabled, the position loop gain POSCTRL_GAIN [1], dedi-
cated to the rigid tap, is used.
Setting the same values for loop gain of the spindle and the feed axis (see below) can reduce
the synchronicity errors during the rigid tapping.
For the detailed information of Rigid pap function, see the Programing Manual for Machin-
ing Center (NCSIE-SP02-20).
MD32200 POSCTRL_GAIN [1] (For each axis)
Meaning: Position loop gain
Setting value: [1/s] (Sets the position loop gain in the unit specified with MD10230)
Note: With each axis MD32900 DYN_MATCH_ENABLE = 1, it is possi-
ble to set each axis conventional position loop gain MD32200 [0] to
be equal.
In this case. however, since the function is enabled for the axis for
which interpolation is enabled independently with Rigid Tap, you
must specify the individual spindle and feed axis separately when set-
ting the time constant for adjustment MD32910
DYN_MATCH_TIME.
The acc./dec. rate during Tapping motion is set to the lower value of acceleration setting values of
either the conventional cutting feed or the spindle orientation.
Also it is possible to improve accuracy by enabling the feedforward control when rigid tap is enabled.
See section 14.3.7.
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