Deep hole drilling

[Thee Rickster ™]

X2 MR2 SP1

 

I am drilling thru 11" of material (graphite mold).

I use a 3/16 em and pre spot face the holes .3" deep.

(some holes are on angles and rads etc.)

 

Then peck #11 drill 5" deep

Z-0- top of block

Z retract at Z-.125

 

Is there a way to start the 11" long drill

where the shorter drill left off, and still have the retract at Z-.125"?

 

Thanks in advance

 

Rick

[Jammer™]

Rick, Your tool is way to short to drill deep!

 

What kind of machine are ya doin this on?

[keith mc.]

If you need to start off where the other left off change the top of stock to z-5.00 and retract set to z -4.875 make sure you set clearance to positve z height.still use peck cycle this should help you

[3rdstring]

I do that on a FANUC control with a custom Macro drilling cycle.

[Thee Rickster ™]

Jammer, 3 axis Hass VF3

 

Concept, I already tries every possible combination of values, including yours, to no avail.

 

I need the z retract to be Z-.125 to clear graphite dust out of hole using an 11" x #11 aircraft Drill.

 

Is there any way to have backplot show the actual pecking?

 

i have to go out to the machine to try every scenerio.

 

I suppose a chook or a new canned cycle with 2 sepparate 'R' values is in order.

 

It would be a very handy drill cycle for mold makers

 

thanks a bunch

Rick

[keith mc.]

no way as far as i know to show peck in back plot it would be a plus if they had it, sorry i couldn't help

[Hardmill]

quote:

---

I do that on a FANUC control with a custom Macro drilling cycle.

---

This is the way to go.

 

 

PEACE

[htm01]

use IJK

it won't start that deep but you can make the first peck 5"

 

I= first peck

J= amount to reduce peck

K= min peck

 

so

 

T4 M6

G0 G90 G55 X0. Y0. S800 M3

G43 H4 Z.1

M8

G98 G83 Z-11. R-.125 I5. J4.8 K.2 F4.

G80

M5

[Thee Rickster ™]

Third string, Hardmill and Htm01, i recall doing it many years ago on a fanuc control, manually programming it.

 

htm01

I haven't programmed at a machine in a long time but the program you posted rings a bell.....faintly in the dark depths of my melon.

 

I did just programmed the full depth to get'er done but will test out your code tomorrow and let you know if I was successful.

 

Thanks all

Rick