Fanuc G85 Boring Cycle is also called Fanuc G85 Reaming Cycle.
As Fanuc G85 boring cycle can be used for Reaming operation.
Fanuc G85 Boring Cycle – Reaming Cycle
Tool traverses down to end depth with feed and retracts the withdrawal plane with feed.
Fanuc G85 Boring Cycle Format
G85 X Y Z R F K
X Y – Hole position
Z – Boring depth (Absolute).
R – Tool starting position above the hole.
F – Cutting feed rate
K – Number of repeats (if required)
Fanuc G85 Boring Cycle Operation
1 – After positioning along X and Y axis, rapid traverse is performed to point R.
2 – Boring/Reaming is performed from point R to end-depth-point Z with specified feed F.
3 – After completing depth Z with feed F, Tool returns with the same feed F.
Return plane is dependant on G98, G99 G-codes.
If G98 is specified with G85 boring cycle the tool returns to Initial-level.
If G99 is specified then tool will return to R level.
Fanuc G85 Boring Cycle Example Program
M3 S100 G90 G99 G85 X300. Y–250. Z–150. R–120. F120. Y–550. Y–750. X1000. Y–550. G98 Y–750. G80 G28 G91 X0 Y0 Z0 M5