Hurco KMB-IS CNC update

Looked some more at the Hurco.

Was expecting to find the rear cabinet door I had missed. But there is no rear cabinet. Looked behind the rear sheet metal and its mostly empty space. There are wires and a contactor I think and a few other things in the LH cabinet. I'll just have to make it up as I go along.

I'm pretty sure that the people at CSU did little more than lean on the machine at coffee break time for about 15 years.

The brown transformer in the picture below has been added. And based on condition, I'm pretty sure the machine had see considerable use after the transformer was added.

In the picture below, you can see where the compressed air dryer and regulator were. Its been removed and is not with the machine. To the lower left of the brown transformer, there is some sort of air device... I think. There's a broken gauge. No idea what this does.

And, a while back, I did look at the X axis drive. And if memory serves, it does have a belt similar to the Y and Z axes.

Leith,

Ok now we are getting somewhere.... you have a later model than mine. I know the Ultimax Twin Screen control came out around 1985 and yours is literally right before the change. I think the schematics will be close, but yours will be just a bit different.

Ok I was bracing for much worse when you were describing the transformer in the past. That would be acceptable even for a repair at Lockheed. I was thinking it was just a transformer bolted on with exposed wiring, but there is nothing wrong with how it is. It's in an enclosure and has the wiring in flex, so no issue there. I believe that is the step down transformer. It looks way too big for servo trans. I would follow that wiring and see what it does. I have a feeling it was wired 440 and still is.

Ok, I still say the X axis is bolted and coupled without belt, but you will be able to check and find out. It shouldn't be a big deal to detach and simply lay the motor with bracket up onto the table. The encoder should be on the end of the motor so you will still be able to set-up in LCNC while its sitting on the table.

You are missing the air inlet assembly on the left as you face the back of the machine. I will attach a pic of your style machine below. Your oiler bolts right up where the piece is missing at the bottom center. You will see it in the picture. I have not been into this style, so I cannot accurately tell you where the transformers were originally located, but they would have been in the back or left cabinet. Since your cabinet on the right is really close to mine, there is no way that the step down would have been in there as it is too big. I knew yours was newer because of the head, but your pendant is identical and thought you may have the same rear cabinet and bottom end of the machine. Not sure how much newer, but I believe yours is around a 84 model.






Got to get back to paperwork, so way behind... will try to help later (if I am really helping at this point). I will check back later,

Robert

Leith,

I am way tied up on paperwork tonight, but when I get a chance I will layout a schematic of what I would do to the machine.

It will be a simple line drawing but enough to understand to get a game plan on what to do, or the way I would approach getting it going. I will be working on it along and along then send you something.

Talk to you later,
Robert

I forgot to ask in the last post.

I was a little unclear where you said you saw the contactor. Was it behind the panel at the back of the machine? If so, look and see if there is just the one or if there is a second. There should be two... one for the servo amp and one for the coolant pump. Let me know what you see next time you look.

Been trying to blow up the pic of the left cabinet so I can somewhat trace your wiring if possible.

Leith,

Ok, this may or may not help you, but I have full confirmation that the transformer in my rear cabinet is the servo transformer. I went back and checked the Hurco part numbers against pics of my trans and it is the same.
So at the same time when you are checking for the 2 contactors, look to see if that transformer is back there by chance.


Here is the pics of mine