Drilling using G83

[Fighter]

Hello

I am trying to program a G83 peck drill event on a Dynapath 10, and am not understanding what value "K" represents. I assume "Q" is the peck increment? (depth drilled between retractions)

If "K" is actually the depth drilled between retractions, then what is "Q"?

I am looking at the Dynapath manual, but it is making no sense at all as there is also reference to an "N" in there and it does not give any examples.

If it would be possible for someone to post an example of peck drilling a .5" deep hole with .1" pecks using G83 I would greatly appreciate it.

Simple examples make things so much easier to understand...


I Googled "G83 Peck Drill" and found lots of information and examples, but none of them reference a "K" value, as Fanuc and other controllers apparently only use X,Y,Z,R and Q to program a G83 as "Q" is the depth drilled between retractions.

Thank You!

[Fighter]

Broke the code!

Apparently "K" on the Dynapath is the equivalent of "Q" on a Fanuc.

"Q" on the Dynapath is equivalent to "d" on the Fanuc, which is a default value on the Fanuc, so you don't need to program it.

My first time playing with the new Dynapath controlled machine and didn't want to crash anything.

Made it through G83, G84, and G85 so I'm good to go on fixed cycles, which were the only questionable events.

Thanks!

[Mauricek3]

If it's like the MicroKinetics MillMaster pro, the K is the incremental depth while Q specifies the number of strokes. You would need to use one or the other. For example K.1 is the same as Q5 when drilling a 1/2 inch hole. Test it in open air before taking my word for it though.

[jagardner4]

The following explanation is from the Delta 40/50/60 manual, not the Delta 10/20, but the K number will act the same. 'O' (the 2nd reference plane) probably doesn't work at all and 'Q' may or may not work, since it was added late in the Delta 10/20 software cycle.

G83 - PECK DRILL CYCLE

This function is programmed with X, Y, Z, R, O, K, and Q. G83 is a peck drill cycle that retracts the tool to the reference plane R after every infeed.

1) Rapid X and Y to the hole’s center.
2) Rapid Z to the R plane.
3) Feed Z to the incremental K dimension. Z depth = R-K
4) Rapid Z to the R plane.
5) Rapid Z to the depth increment R-K+Q.
6) Feed Z to R-2K.
7) Rapid Z to the R plane.
8) Continue the Peck Cycle incrementing the depth increment 1K, 2K....NK until the Z depth remaining is less than 1K.
9) Rapid Z to R-NK+Q.
10) Feed to the programmed Z depth.
11) Rapid Z to the O plane.

G83 is modal and cancels any other fixed cycle.

[HuFlungDung]

So is Q the peck return clearance height above the bottom of the previous stroke depth?

[Fighter]

Yes, that is how it works.

K is the increment depth to drill, and Q is the height above the bottom of the previous drill depth.

Pertty much the opposite of Fanuc.

If K is .200" and Q is .050", it will drill .200 deep at the programmed feed rate, rapid to the reference plane (R), then rapid down to Q height,(.050" above the bottom of the hole) and drill another .200" at the programmed feed rate...etc.

[Fighter]

Thank you for the replies!!

[reggielgie]

If you add a slash to the "Q" value, it just jumps up the distance of "Q" and not to the drill cycle reference point.