
Manual Guide M Cycle Programming
GE Fanuc Automation S.A. - 59 -
GFKE-0046-EN/01
3. 3. 4 Left-handed
Rigid Tapping Cycle G74
This cycle performs 'Left-handed' Rigid tapping.
When the spindle motor is controlled in rigid mode as
if it were a servo motor, a tapping cycle can be speed
up. And the rigid tapping cycle is useful. No special
tool holder is necessary.
By pushing [RGRTAP], the following items are
displayed.
Z POINT DISTANCE
In the case G90 (Absolute = Default)
- the Z axis position of the bottom of the hole
In the case G91 (Incremental)
- the distance from point R to the bottom of the hole
R POINT DISTANCE
In the case G90 (Absolute = Default)
- the Z axis position of point R level
In the case G91 (Incremetal)
- the distance from the initial level to point R level
DWELL TIME
Dwell at the bottom of the hole
FEED RATE
Cutting feed rate for drilling
SPINDLE SPEED
In case of Rigid Tapping spindle speed and feed rate
must be synchronized
Return to Initial level Return to R-level
G74 (G99)
Point R
Point Z
Spindle CCW
P
Spindle CW
P
Spindle stop
Spindle stop
Spindle stop
Point R level
G74 (G98)
Initial level
Point Z
Point R
Spindle CW
P
Spindle stop
Spindle stop
Spindle stop
Spindle CCW