4 - Fagor Automation

Canned cycles (·M· model)
1.5 G84. Tapping canned cycle
Both tapping with a clutch and rigid tapping are possible. For rigid tapping, the spindle must
have a motor-drive system and a spindle encoder.
Programming format in Cartesian coordinates:
G84 Z I K R J
Parameter definition:
Z Reference plane.
In G90, coordinate referred to part zero.
In G91, coordinate referred to starting plane (Zi).
If not programmed, it assumes as reference plane the current position of the tool (Z=Zi).
I Tap depth.
In G90, coordinate referred to part zero.
In G91, coordinate referred to reference plane (Z).
K Delay, in seconds, between the tapping and the withdrawal movement.
If not programmed, it assumes K0.
R Type of tapping.
R0: normal tapping.
R1: rigid tapping.
J 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.
Basic operation:
1 If the spindle was previously running, it maintains the turning direction. If it is stopped,
it starts clockwise (M03).
2 Rapid movement (G0) of the longitudinal axis from the starting plane (Zi) to the reference
plane (Z).
3 Tapping. It is executed at 100% of the feedrate "F" and spindle speed "S" programmed.
Tapping cannot be interrupted.
4 If "K" other than 0, spindle stop (M05) and dwell.
5 Reverse the spindle turning direction.
Withdrawal, exit the tap, to the reference plane. At 100% of the feedrate "F" and spindle
speed "S" programmed. The thread exit cannot be interrupted.
1.
MILLING CANNED CYCLES.
G84. Tapping canned cycle
CNC 8065
(REF: 1209)
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