Custom Drill cycle

[gcode]

I would like to deveolop a custom drill cycle

to spot holes at one feedrate, then finish

at a second feedrate.

 

The gcode would look like this

G0 X1.25 Y1.25 (rapid to hole location)

Z.05 (rapid to R plane)

G1Z-.25 F3.0 (spot hole at reduced feedrate)

Z-1.305 F9.0 (drill hole at normal feed rate)

G0Z.05 (rapid back to R plane)

 

Ideally, the spotting depth and feed rate could

be set in the fields available in custom drill

They could also be hard coded as a percentage

of programmed feedrate and drill point depth

 

I currently do this with point toolpath and then

use the Toolpath Editor to change the feedrate

Its very time consuming and prone to errors, so much so, that its not practical for multiple holes.

Can anyone set me on the right path towards building a custom drill cycle?

[Guest]

This should be fairly easily done Tom.

 

Are you looking to do it with a straight G01 or use a drill cycle?

[gcode]

quote:

---

straight G01

---

I put a sample of desired gcode in the first post

[Guest]

Something like this should get you on the way

 

code:

---

pdrlcommonb

if drillcyc = 10,

[

depth2 = peckclr$

feed2 = retr$

rpd_hght = refht$

pcan1, e$

pbld, n$, sg01, pdrlxy, depth2, feed2, e$

pbld, n$, pzout, feed, e$

pbld, n$, rpd_hght, e$

]

pcom_movea

---

Define the variables needed, feed2, depth2 & rpd_hght

 

Down in the text section add it like this

code:

---

[drill cycle 10]

1. "Special"

2. ""

3. ""

4. ""

5. ""

6. ""

7. ""

8. ""

9. "spot depth"

10. "spot feed"

11. ""

---

The you won't have to use the cutom parameters, you can keep it on the main drilling page

 

It output this

 

code:

---

N100 G00 G17 G20 G40 G80 G90

N110 T1 M06 ( 1/2 SPOTDRILL)

N120 (MAX - Z2.)

N130 (MIN - Z-1.1)

N140 G00 G54 X-.6398 Y.6529 S534 M03

N150 G43 H1 Z2.

N160 G01 Z-.25 F5.

N170 Z-1.1 F10.

---

You can add the code to the pdlcst2 section to get it to do multiple holes

[Matthew]

I know this isn't the solution you were looking for, just another way to skin the cat, but could you spot all the holes first at the reduced feedrate in one drill cycle then go back with another drill cycle and drill them through to finished depth at the faster feedrate?

[kunfuzed]

Also, does your control support overide feed rates and distances, like I and J within your drill cycles? Maybe that way you could just add some misc values to your post? I'm not good with posts, mind you. Then the output migh look like this:

 

G82 G99 X1.25 Y1.25 Z-1.305 R.05 I1.055 J300. F3.

 

I being the overide distance and J being the feedrate overide percentage for that distance.

 

Wish I had a control that supported that... stupid Hurcos!