Anyone know of a simple internal broaching canned cycle for lathe fanuc control? I’m thinking a G71 would work, but also heard of trying G74. Thanks!
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Interesting. are you talking about locking the spindle and using a rough turning cycle to broach a keyway?
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I find this to be helpful used a couple times
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O01234 ( USE A WORK OFFSET FOR BROACH TOOL BY IT SELF)
(YOU CAN ADJUST THE LOCATION IN X OR Y DEPENDING ON KEYWAY LOCATION)
(ALSO THE CODE IS WRITTEN FROM CENTER OF HOLE)
(THIS SAMPLE IS WRITTEN TO CUT KEY WAY AT 12 O ’ CLOCK)
G91 G28 Z0
T__ M06 (ENTER YOUR BROACH TOOL # HERE)
G00 G90 G59 X0 Y0
M05
M19
G43 H__ Z1.0 (ENTER HEIGHT OFF-SET NUMBER HERE)
Z0.5
M08
( *** L # MUST BE THE TOTAL DEPTH OF KEY WAY DIVIDED BY THE D.O.C.)
(IE… IF KEYWAY IS .130 DEEP AND D.O.C. IS .001 THEN L IS = L130 )
(.130 / .001 = 130 )
( L= TOTAL DEPTH / D.O.C. )
M97 P100 L130 ( *** ENTER NUMBER OF PASS HERE NO DECIMAL)
G00 G90 Z1.0 M09
G91 G28 Z0
G28 Y0
M30
N100 (LOCAL BROACH SUB)
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 -)
(VALUE MUST BE LARGER THAN TOTAL DEPTH OF KEY WAY )
G90 Z.5
G91 Y.300 (*** THIS VALUE MUST MATCH PREVIOUS LETTER AND # )
(BUT IT WILL BE OPPOSITE SIGN + OR - )
M99
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Yes sir, locking the spindle.
That looks pretty good, I’ll try it out. Thanks.
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