CNC G72 Bolt Hole Angles – Sample Code for Accurate Drilling

Following cnc programming code shows the use of G72 bolt hole along an angle.

As the names states G72 G-code makes it very easy to drill/bore/tap evenly spaced hole along a specified angle.

Canned cycles G73, G74, G76, G77, or G81-G89 can be used with G72 bolt hole along an angle command.

G72 Bolt Holes Along an Angle Format

G72 I J L

I – Distance between bolt holes along an angle
J – Angle of holes from three o’clock, 0 to 360.0 degrees CCW.
L – Number of evenly spaced holes along an angle

More info G72 Bolt Holes Along an Angle – CNC Milling Programming

CNC Program Example G72 Bolt Hole Along an Angle

CNC G72 Bolt Hole Angles – Sample Code for Accurate Drilling

G72 Bolt Hole Along an Angle

O0009
N10 T3 M06
N20 G90 G54 G00 X0.65 Y-1.5  (Start position of bolt holes along an angle)
N30 S1451 M03
N40 G43 H03 Z1. M08
N50 G81 G99 Z-0.45 R0.1 G72 I0.5 J20. L7 F8.
N60 G80 G00 Z1. M09
N70 G53 G49 Z0. M05
N80 M30

Free Fagor CNC Control Manuals & Catalogs – Multilingual Download Efficient G72 Programming: Drilling Evenly Spaced Bolt Holes Along an Angle

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