Using negative offset in fadal

[ATG]

I was wondering if someone could lead me in the right direction, I'm trying to use cutter dia in the control (32mp controller) to allow the operators to control stock. It seems no matter what I change the dia. to it cuts the same. I’ve tried turning the cutter comp in mastercamx msr2 to controller and that didn’t work either. Any tips???????

 

thanks

[Kyle Waters]

Can you put the file on the FTP?

[Thad]

quote:

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It seems no matter what I change the dia. to it cuts the same.

---

Is there a G41 or G42 in your program?

 

Is the correct D value called up?

 

Thad

[ATG]

The only call out I see is g41, that’s with comp in computer and with comp in controller.

 

N100E01

N110G90G80G40G17G00

N120M6T3*----- TOOL # 3 OFFSET # 3 -----

N130M3S3500

N140G8

N150G0X-.4Y-.2505

N160H3Z2.M8

N170Z.125

N180G1Z-.0742F50.

N190G41D3X3.475F35.

N200G40

N210G0Z.25

N220X-.4

N230Z.0257

N240G1Z-.1735F50.

N250G41D3X3.475F35.

N260G40

N270G0Z.25

N280X-.4

N290Z-.0735

N300G1Z-.2727F50.

N310G41D3X3.475F35.

N320G40

N330G0Z.25

N340X-.4

N350Z-.1727

N360G1Z-.372F50.

N370G41D3X3.475F35.

N380G40

[Storkman]

You need a lead in line. It is turning on comp across the cut.

 

EX:

 

N150G0X-.45Y-.2505

N160H3Z2.M8

N170Z.125

N180G1Z-.0742F50.

N190G41D3X-.4F35.

N200X3.475F35.

N210G40

[Santa Fe]

have you notice that you have a g40 right after the line with g41.

 

[ATG]

I'm not sure what you mean by lead in. G41 means cutter comp left, is the G41D3 using cutter comp left and offset 3 in the controller? I'm not really sure how that works. Do i need the g41 or could i turn the comp totally off in mastercamx. Then set the tool dia in the controller????????????

[ATG]

"have you notice that you have a g40 right after the line with g41."

 

 

I'm Not sure why its posting like that.

[Storkman]

It needs a line to turn on comp before the cut. The way it is now, comp is not fully engaged until it gets to the other end of the cut. In the example, I gave it a .05" line to turn on comp before starting the cut.

[Santa Fe]

seems like all you need is a lead in and out in your program.

 

[jagg2499]

i agree just set-up the lead in and out parameters. if you are still having a hard time put the file on the ftp site or email it to me and i will take a look at it for you

[Keith Graydon]

quote:

---

N190G41D3X3.475F35.

N200G40

---

Lead in all you want but look at the code.

Comp is cancelled on line n200 immediatly after it is called on line n1900. Like jleal said.

 

cancel the comp after the path(or portion thereof). not after the first move.

hth

-Keith

[Justin Beebe at Folsom Tool]

"have you notice that you have a g40 right after the line with g41."

 

 

I'm Not sure why its posting like that.

 

I can't get it to Post like that no matter what I do.

 

I would make sure you climb cut, set cutter comp to wear, and select your lead in/ lead out button

[Storkman]

You don't really need a lead-out line to turn off comp. We set our posts to retract in z then turn off comp. There are alot of different ways to set it up. But if I remember our POS fadal we had years ago, it would reposition after turning off comp, so you better make sure your cutter is clear.

 

 

N150G0X-.45Y-.2505

N160H3Z2.M8

N170Z.125

N180G1Z-.0742F50.

N190G41D3X-.4F35.

N200X3.475F35.

N210G0Z2.

N220G40

[Keith Graydon]

Also, to answer part of your original question.

Yes, you can use negative offsets in a FADAL control. If the code posts correctly.

-Keith

[Thad]

quote:

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You don't really need a lead-out line to turn off comp .... But if I remember our POS fadal we had years ago, it would reposition after turning off comp, so you better make sure your cutter is clear.

---

Prolly because you didn't have a lead out move.

 

Thad

[Hardmill]

quote:

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POS fadal

---

Thats not very nice

 

 

PEACE

[Zoober]

You really should (if possible) turn comp on and off with perpendicular lead moves. no circular leadin/out.

 

Fadal uses look ahead to turn comp on and off, looking always to be tangent to the previous and next moves.

code:

---

 N190G41D3X3.475F35.

N200G40

N210G0Z.25

---

The above code will not work because:

 

Fadal will turn comp on in the line of the g41 in a tangency to the next move, and cancell the line after the g40 tangent to the next move, If there are Xy moves at those lines. if not, it will attemp to comp by the end of the g41 line, resulting in an angular move. BUT, because the g40 line is very next line, and there are no XY moves after the g40, it is not comping at all, because there is no tangency to achieve. (am I making sense? )

Therefore, ALWAYS turn comp on and off with perpendicular moves (lead in / Lead out)

 

Oh, and minus offsets will work just fine. You just need to use wear, not control.

[Storkman]

quote:

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Thats not very nice

---

So?

[Storkman]

quote:

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Prolly because you didn't have a lead out move.

---

Don't need it if your above the part dummy.

 

j/k Thad.

[Zoober]

and if that little cancel move don't hit clamps, vise jaws, stops, etc...

[Storkman]

You know that Fatal was the only machine out of 36 that would do that. The others all recognize where they are without repositioning. Good reason to get rid of it, that and because they're a POS.

[Zoober]

POS - yea. I was an app eng. for too many years for a Fadal dealer. That move is because of the tangency thingy I mentioned above.

[Storkman]

yea, but why do our okks niigatas matsuuras okumas monarchs or mazak need it, or make that move?

 

Prolly to reposition the rubber ballscrew assembly.

 

[Zoober]

prolly