Programming manual
CNC 8055
CNC 8055i
CANNED CYCLES
9.
·M· & ·EN· MODELS
SOFT: V02.2X
·173·
G84. Tapping canned cycle
[ R ] Type of tapping
Defines the type of tapping to be carried out.
R0 Regular tapping.
R1 Rigid tapping. The CNC stops the spindle with M19 and orients it to begin tapping.
R1 Rigid tapping. If the spindle is turning in M3 or M4, the CNC does not stop it nor orient
it to begin tapping. This option does not allow thread repair, even if the part has not been
released because the thread start (entry) will coincide with the one machined earlier.
[ J5.5 ] Withdrawal feedrate factor
When rigid tapping, the returning feedrate will be J times the tapping feedrate. When not
programmed or programmed J1, they will both be the same.
In order to execute a rigid tapping, the spindle must be ready to operate in closed loop; in other words,
that it must have a servo drive-motor system with rotary encoder.
When rigid tapping, the CNC interpolates the movement of the longitudinal axis with the spindle
rotation.
[ B5.5 ] Penetration step during tapping with relief.
It is optional and sets the penetration step during tapping with relief. This parameter is ignored when
programming R=0 or R=2. Tapping with relief is only possible when programming R=1.
When not programmed, tapping will be done in a single pass. When programmed with a 0 value,
it issues the corresponding error.
[ H5.5 ] Withdrawal distance after each penetration step.
This regress will be performed at a rate that takes into account the factor programmed for J. This
parameter will be ignored if R=0 or R=2 is programmed or if parameter B has not been programmed.
If not programmed or programmed with a 0 value, the withdrawal will be done to the Z reference
plane coordinate.
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