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Andre,

Thanks so much. I'm looking through to see what I can get to work.

Kevin

So, it's been 3 weeks now and still no reply from Dolphin. Anyone know someone good there to contact? Andre?

Thanks, guys.

Anyone have one that works?

I lost mine due to a computer failure. The included one seems to do nothing but create errors at the control.

I contacted dolphin to see if they could resend the...

I got quote from ZPS. I'm just pretty sure I could get them cheaper elsewhere.

Hey guys,

I'm looking to replace the spindle bearings in my Journeyman 325. Would any of you happen to know what the correct size bearings are? Part #s? I'd like to order the new parts before...

Its quite possible that the problem isn't in the drive, but on the Fanuc main board, where that speed signal comes from. Is a GN6 the same as a 6A or 6B?

Yeah that makes sense. Had to wrap my head around it a little better. One question- If I change the G50 value of a tool, that would then also effect every tool after it right? Because the new G50...

Thanks for the replies!

So how are you coming up with your G50 values relative to the new "arbitrary" index position? I was thinking if after my first tool I pulled Z out far enough to clear, I...

Hello all,

I have an Okuma lathe with 6TA control. As many of you know, this machine doesn't have geometry offsets. I'm curious what strategies you have used for changing tools. Currently, I just...

Thanks for the reply. Also, it seems that I actually need G41 for the facing cut, and then G42 for the radius. How do I switch between the two cleanly? I guess the Z movement issue is because with...

On further testing, it seems that it may be the G42 that is causing problems. Cancelling with G40 prior to the finish pass seems to stop the Z movement issue. But of course that means the radius...

Hey guys:

I have an early 80s 6TA on an Okuma lathe. I have some 1.5" dia. brass, by 1.035 long. Hanging on to .25" in the chuck. Attempting (futilely) to turn a .75" full radius on the end....

Motors are black cap. Not sure exactly what drives I have, but I do know for sure that Z gets it's power from the X board. If the power supply were an issue, would I be seeing an issue with Z...

Hello,

I have an Okuma lathe with 6TA control, Fanuc DC servos, and Fanuc drives. The servo motors have 2000ppr encoders built into them. Here is the problem:

I get a 410 alarm on the X axis....

Hi guys,

Been busy the past few days, but I received a copy of the electrical drawings from Okuma. Includes all the wiring, as well as alarm info, PLC ladder, Fanuc alarms, etc. According to...

Thanks.

I can't open or close the chuck. I step on the pedal, but nothing happens. No LED on the panel to indicate chuck status.

There are spindle jog controls on the panel, but they are also...

Thanks again for the replies. Tried the Tool change and spindle, got nothing. Once hitting start in MDI, nothing happens, but I can't type in any other commands either, unless I hit reset. Kinda like...

Got the G01 changed, and you're right, no movement. Can I change to feed per min?

I use G00 to execute a tool change? No M06 necessary?

Phasing is correct, as the hydraulic pump runs the...

Hello all,

Picked an Okuma & Howa NC 4PS lathe. Equipped with Fanuc 6T control, Fanuc motors and drives.

Need some help getting it up and running, don't know much about these controls. I have...

Thanks for the reply. How long is the pusher? I assume it's long enough to push the bar through the spindle? So for a 6' bar, the feeder is going to be something like 9' long? What is the pusher...

Hi guys,

Not sure if this is in the right forum, but not sure where else it would go. I bought an early 80s Okuma & Howa CNC lathe with Fanuc 6T control. Included with it is a Thuro 12' hydro bar...

Have you made any progress?

I have my lathe running, and holding decent tolerances, but I wouldn't call the tuning good.

What kind of position error count have you been able to achieve?

I...

Thanks for the response!

Yes I am trying to follow the manual, but I don't find it to be terribly detailed.

Tonight, I changed the error fault limit to a much higher number, which allowed me to...

Here are some attachments showing the response curves I get. The first is when tuning in torque mode, which I think looks pretty good. The second is tuning for velocity response in position mode. Not...

Hello all,

Need some help configuring my VSD-Es. I was originally using one drive in dualDC mode to run my lathe. I decided to upgrade to a pair of drives to take advantage of the increased power...

Thanks for the reply! Those suggestions helped. I'm still having absolutely no luck however trying to tune the drives to usable settings.

I will start a new thread for that subject.

Thanks...

Thanks for the quick reply- I just figured out what the problem was. Operator stupidity.

I did not, in fact, have the motor connectors wired correctly. Did not realize I needed both + phases...

And how does one go about fixing this? I recently upgraded from one VSD-E in dualDC mode to two VSD-Es. Uploaded the same firmware to both of them, set the motor configuration, and trying commanding...

I don't have any photos, but both the encoder wiring and CMD wiring is done using double shielded (foil covered by braid) cable. The encoder shielding grounds to the drive, and the CMD shielding...

The issue is most noticeable during arc and angle movements, i.e. when interpolating movements between two axes. Straight line moves in a single axis rarely showed problems.