BROACHING ON OKUMA

[cappyg]

Hello,

I was wondering if anyone has used a variable driven program to broach keyways on a lathe. i would like to broach a keyway in a bore, but programming the turret moves would be long hand written. I would like to learn more about using a repeat function or do while loop routine. The broach would move up in X step by .001" and repeat same X and Z moves until the depth of the keyway was attained. has anyone used a program format like this?

Thanks in advance,
Greg.

[ChattaMan]

Try this...

your startup codes/tool changes etc...

blah, blah
VC100 = 0 (first X position)
VC101 = VC100
NLOOP IF [VC100 GT 0.2] NEND (enter your last X position here)
G0 Z0.1 X=VC100 (moves to start pos)
G1 Z-1. F?? (feeds in Z)
G0 X=VC101 ( retracts X to start pos)
G0 Z0.1 (rapids out in Z)
VC100 = VC100 + 0.001 (adds .001 to last X position)
GOTO NLOOP (returns to start of loop)
NEND (if argument in NLOOP line is true, then jump to here)
blah, blah carry on with rest of program.

Hope this helps