G69 cancels any rotation specied previously.
G70 Bolt Hole Circle (Group 00)
I Radius (+CCW / -CW)
J Starting angle (0 to 360.0 degrees CCW from horizontal; or 3
o’clock position)
L Number of holes evenly spaced around the circle
This non-modal G code must be used with one of the canned cycles G73, G74,
G76, G77, or G81-G89. A canned cycle must be active so that at each position,
a drill or tap function is performed.
G71 Bolt Hole Arc (Group 00)
I Radius (+CCW / -CW)
J Starting angle (degrees CCW from horizontal)
K Angular spacing of holes (+ or –)
L Number of holes
This non-modal G code is similar to G70 except that it is not limited to a com-
plete circle. G71 belongs to Group 00 and thus is non-modal. A canned cycle
must be active so that at each position, a drill or tap function is performed.
G72 Bolt Holes Along an Angle (Group 00)
I Distance between holes (+CCW / -CW)
J Angle of line (degrees CCW from horizontal)
L Number of holes
This non-modal G code drills “L” number of holes in a straight line at the speci-
ed angle. It operates similarly to G70. For a G72 to work correctly, a canned
cycle must be active so that at each position, a drill or tap function is per-
formed.
.
I=Radius of the bolt circle
J=Starting angle from the3o'clock
position
L=Number of holes (evenly spaced)
I
J
I
I
J
J
K
I=Radius of the bolt circle
J=Starting angle from the3o'clock
position
K=Angular spacing between holes
L=Number of holes (evenly spaced)
I=Distance between holes
J=Starting angle from the3o'clock
position
L=Number of holes
G70
Bolt hole circle
G71
Bolt hole circle
G72
Bolt holes
along an angle
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