Fagor 8055i Mill control Problems

[ChrisCharby]

i have a challenger microcut machining centre and im trying to rigid tap, the machine has an 8055i controller on it and i think the problem is synchronisation between spindle rpm and feed.

at higher Rpms 1000 and above there is no problem i think the speed fudges the encoder resolution.

at lower speeds below 1000 rpm i think the encoder which is capable of 8000 rpm is "in the weeds" so to speak and tends to multiply the following error.

anyone have any solutions to this problem? i dont want to tap 1/2-13 at 1000 rpm.......

[Kiwi]

ChrisCharby
Looks like you may need to contact ToddSR. I haven't seen him post here on CNCzone for awhile. He's the Fagor guru.

[segway36]

You can manually check the following error with the hand wheel. Maybe your problem is in the drive tuning?

[cam1]

Hi:
When you home the machine where does it go? Most machines go to the positive extreme of each axis to find home. I thinks it's going to boil down to a machine parameter/x axis parameter. I'd make sure that I have a backup of all parameters (can be done by USB or RS 232), and then go into the X axis machine parameters.
Most of the parameters are named, and are intuative. I think the solution will be a count direction issue(+/-), or the value which defines the axis limits.
Only change 1 parameter at a time, and then reboot control(must be done). Keep a pad handy to track all changes.Changes that have no effect on the solution get changed back to the original value before proceeding.

To get you up and running, there is a mirror axis feature on the control, the zero key button (exteme LH below screen), if pressed 3 times (the first is to home, the second is to set work offsets, the third allows you to mirror axis.....I'm not standing in front of the machine, so please pardon me if I'm not 100% correct about the mirror axis procedure. I'm ussing a 2007 8055 iA 3X milling control.

regards

[kcho]

Hi I´m Carlos.
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It is almost as if the encoder or something is wired wrong or a parameter needs changing. Anybody have any experiance with this?
I have tried G10 mirror image cancel at the beginning of the program and that does not alleviate the issue. Fagor, so far, has been no help at all. They say the axis movement is correct. The table position is moving negative and the CRT confirms this. What they do not seem to understand is that when the table moves negative, my tool position is positive of my zero. So when my program runs, it reads my positive moves and the tool is negative of my zero and engraving air. I hope this is not to confusing. I have given myself a headache.
I am using Surfcam to program. The program will run on my Fadal with the Numatix control perfectly. It is just a simple engraving program.
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Ok lets see your problem first of all When you move the machine, it´s move for the right direccion I mean forget the program. Go to the manual mode and check the positive and the negative direction from the spindle. DO this simply test and tell me.

Best regards

Carlos

[newarkprecision]

Seems to me that the machine has incorrect parameter. This would be true depending on if it is a bridge type machine where tool does the moving or a milling type machine where the table moves and what end the servo motor is mounted. Just tell them you need the parameter to reverse the axis right or wrong of what they think.

[salchez]

Hello everyone!
I have Fulland VMC with control Fagor 8050/55M. I have reset the x-axis parametres by mistake and I don't have backup of these parameters. So I managed to change x-axis direction according to your advices and it works, but now I find out that I have big problems with milling circles, because the actual circle is not round, but elipse-like shape, very visible even with pure eyes
So now I'm quite sure that some x-axis parameter between P1-P64 has to be changed to make the circle round again. I found a lot of user and operating manuals for this control but no manual with described functions of all these machine (axis) parameters ... Can someone help me on this? Thank you!

[salchez]

I already find a backup of paramteres, so thanks anyway!