Operator`s manual

Advanced Haas Mill Programming Techniques Training Manual Page 23
G12, G13 Circular Pocket Milling
• Used for milling circular pockets
• G12 [D.. ] [F… ] [I…] [K… ] [L…] [Q…] [Z…] (Clockwise move)
• G13 is used for counter clockwise moves
D - Tool radius offset selection
F – Feed rate
I - Radius of first circle(or finished circle if no K)
K - Radius of finished circle (optional)
L - Loop count for deeper pockets (used with a G91)
Q - Incremental radius step (required with K)
Z - Depth of cut (or increment with L)
• G12 and G13 are Non-modal
• Cutter Compensation is included in this routine
• Use D00 to ignore tool offset
• Use I without K and Q for small pockets or holes
• When using K and Q, only K should be the radius of the desired finished pocket
• Position cutter in a previous block or add an X and Y to the G12/G13 line
Example of one pass milling using only the I variable.
Milling a 0.8” diameter 0.5” deep pocket using an 0.5” end mill. The picture shows the tool path for the
code given. Note with G12 a clockwise rotation is created where the mill is conventional cutting.
G12 Z-0.5 I0.4 D01 F15