
5.AUTOMATIC OPERATION B-63943EN-1/02
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Caution
CAUTION
1 If rigid tapping is stopped as a result of an
emergency stop, the position on the tapping axis
(Z-axis) is maintained but the spindle position is
lost. In such a case, therefore, the positional
relationship between the spindle and tapping axis
is not guaranteed when operation is resumed.
2 Rigid tapping retraction is performed based on the
tapping axis (Z-axis) commands accumulated for
tapping. If rigid tapping is stopped as a result of
an emergency stop, therefore, rigid tapping
retraction may fail to draw the tapping tool
completely out of the workpiece. In such a case,
set retract value α (parameter No. 5382).
3 During rigid tapping retraction, switching the mode
to the manual operation mode stops rigid tapping
retraction, and decelerates and stops the machine.
4 For rigid tapping retraction, the CNC internally
activates a return program. Rigid tapping retraction
may, therefore, cause some G codes or M/F/S
codes to be overwritten (G80/G84/G74, G94/G95).
5 During rigid tapping retraction, do not change any
setting affecting the travel distance (such as the
increment system, input unit 10 time multiply, or
calculator-type decimal notation) that was made
when machining data was stored for rigid tapping
retraction.
Note
NOTE
1 Setting rigid tapping retraction start signal RTNT to
1 starts rigid tapping retraction only when the CNC
is placed in both the reset state and MDI mode.
2 The machining data for rigid tapping retraction is
retained until the next rigid tapping command is
specified, even after the power is turned off. Rigid
tapping retraction can, therefore, be specified even
after the power is turned off.
3 Rigid tapping retraction is not performed if the input
increment (inches or millimeters) selected when
machining data is stored for rigid tapping retraction
differs from that selected when rigid tapping
retraction is executed.
4 Override can be applied to rigid tapping retraction
when it is enabled.