Fanuc CNC Lathe Example: Using G71, G72 & G70 Canned Cycles for Internal Boring & Facing

Fanuc programming example which shows the use of multiple fanuc canned cycle in cnc programming, Following canned cycle are used in this cnc lathe programming example

G71 Rough Turning Cycle
G72 Facing Cycle
G70 Finish Cycle

Fanuc G71 for Boring Opertaion

This programming example also illustrate how G71 turning cycle can be used for internal machining (boring operation). So if you want to remove extra stock from inside of a component, you can use Fanuc G71 turning cycle for internal stock removal as well.

Fanuc Programming Example

Fanuc CNC Lathe Example: Using G71, G72 & G70 Canned Cycles for Internal Boring & Facing

Fanuc Canned Cycle Example

G28 U0 W0
G50 S1500
N1 T0101 M8 (OD FACING)
G96 S180 M3
G0 X255.0 Z5.0
G72 W2.0 R0.5
G72 P100 Q200 F0.25
N100 G0 Z0 G41
G1 X-2.0 F0.18
N200 G0 Z5.0
G40
X255.0
G28 U0 W0
N2 T0404 M8 (ID ROUGH)
G96 S180 M3
G0 X50.0 Z5.0
G71 U2.0 R0.5
G71 P500 Q600 U-0.5 W0.1 F0.25
N500 G0 X202.0 G41
G1 Z0 F0.12
X200.0
Z-10.0
X100.0
Z-30.0
X60.0
Z-45.0
N600 X50.0
G40
G0 Z5.0
G28 U0 W0
N3 T0505 M8 (ID FINISH)
G96 S220 M3
G0 X50.0 Z5.0
G70 P500 Q600
G0 X50.0 Z5.0
G28 U0 W0
M5 M9
M30

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