158
96-8000 Rev AC
May 2010
G69 cancels any rotation specified 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
-
fied 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 the 3 o'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 the 3 o'clock
position
K = Angular spacing between holes
L = Number of holes (evenly spaced)
I = Distance between holes
J = Starting angle from the 3 o'clock
position
L = Number of holes
G 70
Bolt hole circle
G 71
Bolt hole circle
G 72
Bolt holes
along an angle
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