Haas Mill User Manual

133
G Codes
96-8000 rev R June 2007
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 complete 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 specified 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
performed.
I = Radius of the bolt circle
J = Starting angle from the 3 o'clock
position
L = Number of holes (evenly spaced)
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 = 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
I = Distance between holes
J = Starting angle from the 3 o'clock
position
L=Number of holes
G70
Bolt hole circle
Bolt hole circle
G71
Bolt hole circle
Bolt hole circle
G72
Bolt holes
along an angle
Bolt holes
along an angle
Rules For Bolt Pattern Canned Cycles:
1. The tool must be placed at the center of the bolt pattern before the canned cycle execution. The center is
usually X0, Y0.
2. The J code is the angular starting position and is always 0 to 360 degrees counterclockwise from the three
o’clock position.
Looping Canned Cycles
The following is an example of a program using a drilling canned cycle that is incrementally looped.
NOTE: The sequence of drilling used here is designed to save time and to follow the
shortest path from hole to hole.

Haas Mill Specifications

General

Travels X Axis	Varies by model
Travels Y Axis	Varies by model
Travels Z Axis	Varies by model
Spindle Speed	Varies by model
Spindle Motor	Varies by model
Table Size	Varies by model
Rapid Traverse Rates	Varies by model
Tool Capacity	Varies by model
Max Cutting Rate	Varies by model
Spindle Taper	Varies by model