Given a desired tap depth, is there a formula for the drill depth?
Along those lines, here is a ditty I use for tapping.
R8, R9 establish the relationship between drill and tap depths in subroutine
L200, and get passed to the Z's in the drill/tap cycle, preserving the
relationship. This also minimizes the error of changing one, and not
changing the other.
I have chosen a drill depth 50% greater than the tap depth.
Normally, I would assign these numbers to V variables, and later pass those
on to R variables, but with no real calculations, this isn't really
Feel free to critique the tapping code, as I have no idea why shit is the
way it is, just that it works.
N14#R8=.48' tap depth
N15#R9=1.5*R8' drill depth
N22( MAIN PROGRAM
N31M6T21( #21 DRILL
N36G83G98R+0.1Z-R9F7.5Q0.45( <------ R9
N40M6T20( TAP, 10-32
N47G84.1G98R+0.1Z-R8S1000.2F31.25( <--------- R8
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