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BROACH MAIN.MIN
(USE A WORK OFFSET FOR BROACH TOOL BY ITSELF)
(ADJUST THE LOCATION IN X OR Y DEPENDING ON KEYWAY LOCATION)
(CODE IS WRITTEN FROM CENTER OF HOLE)
(EXAMPLE  IS WRITTEN TO CUT KEY WAY AT 12 O’ CLOCK)
(THERE ARE 2 FILES-  ONE IS MAIN PROGRAM, ONE IS SUB PROGRAM)

G00 Z20.
T__ M06 (ENTER YOUR BROACH TOOL # HERE)
G15 H59
G00 G90 X0 Y0
M05
M19
G56 H_ Z1.0 (ENTER HEIGHT OFF-SET NUMBER HERE)
Z0.5 M08
(THE Q # EQUALS THE TOTAL DEPTH OF KEY WAY DIVIDED BY D.O.C.)
(IF KEYWAY IS .130 DEEP AND D.O.C. IS .001 THEN Q = 130 )
N001 PSUB.MIN Q130 ( *** ENTER Q DIGITS HERE NO SPACE, NO DECIMAL)
G00 G90 Z20. M09
G28 Y20.
M30
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SUB.MIN
G00 G91 Y.001 (**YOU CAN CHANGE TO X IF KEYWAY IS IN THAT DIRECTION)
G01 G90 Z__ F__ (END POINT -Z OF BROACH & FEED RATE IPM)
G00 G91 Y-300 (*** THIS MUST BE SAME LETTER AS PREVIOUS MOVE X OR Y )
(*** MUST BE OPPOSITE SIGN TOO + OR -)
G90 Z.5 (Z VALUE MUST BE LARGER THAN TOTAL DEPTH OF KEY WAY BY .125” MIN)
G91 Y.300 (*** THIS VALUE MUST MATCH PREVIOUS LETTER AND # )
(BUT IT WILL BE OPPOSITE SIGN + OR - )
GOTO N001
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