arc calculation error OKUMA

[CDL2042]

Our OKUMA vertical mill has been giving an error message when we try to use cutter comp. Sometimes this can be fixed by changing the size of the lead in/out. Sometimes we can't get it to work at all.

 

I have been using perpendicular entry/exit. The post uses R instead of I,J,K.

 

There are some older threads on this site that suggest switching to I,J,K format. If that is the solution, how would I do that?

[elbro]

Are you turning you comp on a Radius?

[CDL2042]

Yes, I am using line in/out and arc in/out with the line perpendicular to the arc.

[Kannon]

code:

---

arcoutput  : 0     #0 = IJK, 1 = R no sign, 2 = R signed neg. over 180  

---

switch your arcoutput in your post to 0 instead of the 1 or 2 that you have selected now.

[chris m]

Are you using Wear ["perfect" tool dia has a zero offset] or Control [offset is the tool radius] comp? If you're using control comp remember that you'll need a lead-in line more than 1/2 of the cutter dia.

 

If you are using Wear, I've experienced odd comp alarms in my Okumas with the U10M that could be eliminated by altering the comp value a few tenths one way or the other; the machine would gag with -.003 but be OK with -.0035. I eliminated most of my errors [for some reason] by changing to Reverse Wear [been running Reverse Wear for about 4 or 5 years now] and dealing with positive values instead of negatives all of the time.

 

C

[CDL2042]

I am using wear.

 

I will try switching the arc output first, if that doesn't work, then I will try the reverse wear. Thanks to both of you!

 

BTW Kannon, I wish I was still using 9.1!!!

 

One year after switching to X, and numerous side by side and overwrite installs later, I really don't know what I gained by switching to X.

[beej]

All of the above are the first things to try, but there is a parameter in the Okuma that loosens up the tolerance also. If nothing else works I'd try that.

[mig]

Hi,Experience

 

 

First , long time ago i found kind of math problem in okuma if you using negative value of offset .I just followed numbers (positions) in single block mode. You can avoid this problem if you using tang. line setup in lead in , lead out enter/exit .

regards

[mig]

This "Experience" came accidentally when i used to edit my writing.

I am sorry

[Greg Williams]

What is the control model?

[Rick Henrickson 65]

it is a parameter I have it logged at home and can put it up here if you like.

it fixes the

-.0005 wear dia might alarm

but

-.001 wont.

If this is the problem you are refering to it is an easy change.

[Goldorak]

your ramp in and ramp out must be over 50%

and lenght also must be over 50%

 

okuma dont leave you a chance for radius .0001 off and you got a cutter comp. alarm!

[CDL2042]

Rick,

 

Yeah, if you could put that up here I would take a look at it.

 

Thank you.