Problems with our Okuma mill.

[Jeff2005]

Okuma Millac 1052VII mill with the Tsudakoma TN-320 4^th/5^th axis rotary table

We are having issues with the above listed machine.  Not sure if it on the mill side or the post side.  Is anyone using this combination setup or even this machine that could help?

We are using inverse timing for the trunnion.  I will provide more info if needed, depending if anyone has this setup.

 

thanks for any help you could give.

Jeff

[Guest]

Jeff, 

What kind of problems?  You list absolutely nothing that someone could say, "I can help with that"

[Jeff2005]

Understand, my apologizes for being so vague.  The inverse timing isn't working properly.  The speeds are off, running way too slow.  When we varify in mastercam, with machine simulator, it is showing to be correct motion.  When loaded in the Okuma, it is doing something totally different.

 

thanks,

Jeff 

[Guest]

In the control def, do you have the Inverse set to Feedrate in Minutes or Feedrate in seconds?

 

And you are certain Inverse is required, correct?

Edited April 17, 2017 by Guest

[Jeff2005]

Using Feedrate in Minutes.   I am not sure, we were told by our reseller that we needed it.  we had to request this option be added by Okuma.

 

thanks,

[Guest]

4 minutes ago, Jeff2005 said:

Using Feedrate in Minutes.   I am not sure, we were told by our reseller that we needed it.  we had to request this option be added by Okuma.

 

thanks,

In your situation, I'd send that off to an Okuma AE and ask, "What am I missing, this isn't running right on our machine"  it might we be a machine parameter, which they should be in the position to know

[Jeff2005]

I was wrong in saying who said we needed to run inverse timing.  It was NOT our reseller for Mastercam.  It was the company we bought the machine from.

I am not sure the machine company knows at this point.  We have been trying to figure this out for almost 9 months with no success.

thanks for your input.

 

Jeff

[Guest]

17 minutes ago, Jeff2005 said:

I was wrong in saying who said we needed to run inverse timing.  It was NOT our reseller for Mastercam.  It was the company we bought the machine from.

I am not sure the machine company knows at this point.  We have been trying to figure this out for almost 9 months with no success.

thanks for your input.

 

Jeff

9 months?  I'd be pi$$ed after 9 days

They can't give you a sample of code that runs?   or tell you why yours won't?

That's some BS if I've ever heard it...

You should ping YoDoug or Brad Lisle on this forum...IIRC, they bother work for Okuma dealers and "might" be able to offer some assistance

Edited April 17, 2017 by Guest

[gcode]

I had a similar problem on an old HBM with an aftermarket rotary table.

All efforts to fix it properly failed so I hacked it

I wrote a toolpath 10" long and gave it a feed rate of 10ipm, then timed how long it took to run,

From that data I calculated a fudge factor and multiplied all rotary feed rates by that value in the post

Yes, it's a caveman hack...and  the results aren't perfect, but it works

[crazy^millman]

8 minutes ago, gcode said:

I had a similar problem on an old HBM with an aftermarket rotary table.

All efforts to fix it properly failed so I hacked it

I wrote a toolpath 10" long and gave it a feed rate of 10ipm, then timed how long it took to run,

From that data I calculated a fudge factor and multiplied all rotary feed rates by that value in the post

Yes, it's a caveman hack...and  the results aren't perfect, but it works

You been stealing from the Crazy^Millman playbook. Or did I steal that idea form you?

[gcode]

17 minutes ago, 5th Axis CGI said:

You been stealing from the Crazy^Millman playbook. Or did I steal that idea form you?

the right question is ... who is crazier than who ???

[mkd]

Millac is a Fanuc control, right?

[Brad Lisle]

2 hours ago, mkd said:

Millac is a Fanuc control, right?

Millac has an optional Fanuc control, but is standard with OSP

[Brad Lisle]

My guess is that NC Optional Parameter #15 bit #7 (Use inch mode as federate for rotary axis) and Parameter #54 bit #2 (Changes inverse time feed to minutes instead of seconds) both need to be checked

[wdg5555]

If your speeds are really slow you might want to check your setting in Hi-Cut parameters. The number under maximum feedrate controls the maximum feedrate regardless if you are using Hi-cut or not.

[Jeff2005]

 

As for now, the setting that Brad had me change, worked.  I am dealing with some other issues now. 

 

Thanks Brad

 

jeff