UMC-500 flooding, not ready for production

[coffeetek]

Meet Lake Haas:

 

[D Nelson]

Ok here is a update on our 2 umc 1000 conveyor problem the second machine is about 3 months old. We raised the outlet end of the conveyor about .5 inch for support we removed the screws to slide the bottom pan out. Sure enough there is 2 wide open slots one on both sides of conveyor the gap was 2.2 inches tall and 6.25 inches long. I waterjeted 2 parts out of .06 sheet metal. About 1.5 inches from each end I bent it into a slight z shape and used sheet metal screws to attach it looks like it filled the gap nicely. Machine 2 is a year old took it apart and the gap was 2 inches tall and 24 inches long made a part for both sides of that machine and installed it. It looks good also. I will give it a week and report back to this thread and maybe it will help someone else out
Don


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[Speedie]

Haas does not take chips seriously. They have another mile to go to get there. Virtually all mills even with screws and conveyor suffer low angle screw feeding and small chip intake hole on the mill side. Even a 18 year old Mori does a better job with the same setup

 

[empower]

lol haas and serious production...

 

[D Nelson]

lol haas and serious production...

I will video this thing when it’s running it gets right along
Don


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[BT Fabrication]

Meet Lake Haas:

View attachment 312427

Why is the conveyor only running for a minute? can't it be on fully?

 

[coffeetek]

Why is the conveyor only running for a minute? can't it be on fully?

Yes, it can be run all the time. Problem is the more you run it the more chips end up in the chip tray. More chips in the tray the sooner it floods the shop...

 

[Houndogforever]

I'm really confused, if the chip conveyor is running, why are chips building up in the chip pan?

 

[coffeetek]

So an update. We have Hennig conveyor installed which has drum filter and air knife. This is working finally! There are no excessive chips ending up in chip tray and flooding machine. There is still small leak but this one is coming from enclosure.

Note if anyone decides to go with Hennig conveyor. The drum filter needs its own pump to wash it constantly when conveyor is working. Luckily we had the high pressure pump from Haas so there was enough flow to T off to the conveyor. But this also means that when conveyor is running flood coolant has to be running and I changed the post to reflect that.

Hennig conveyor is also using twice as much power as Haas conveyor and control cannot supply that so there is additional kit needed to connect it to the control.

Now to solve another UMC-500 problem which is huge Z-axis growth...

 

[thesidetalker]

Now to solve another UMC-500 problem which is huge Z-axis growth...

I wouldn't hold your breathe. I think you are expecting too much from a budget machine, in this regard.

 

[GeorgiMirov]

Now to solve another UMC-500 problem which is huge Z-axis growth...

Hello ,

We received a brand new UMC 500 SS 10 days ago.
First look very good , very powerful machine B and C axis had probably 0,001 deg backlash. I didn't expected such accurate rotaries, probably because of the scales.
After working on the machine a few days I noticed unrepeatable tool offsets. And I mean by 0.05mm up and down during the day. For me this is huge number.
I spoke a few days with the technicians to try to figure out the problem but all the variable we could imagine were not the cause of this problem.
I did a special warm up cycle routine, my factory is climate controlled so the temperature variance is not the problem.
Between a cold and warmed up spindle the difference is about 0,01mm which for this kind of machine I think is acceptable.
MRZP calibration was done several times - major differences in Z , very small in x-y.

We made a 50cm concrete foundation especially for the machine about 2 months before arrival. ( plenty time to cure ).
The machine is not anchored.

After a week of headbanging I understood that another local customer who received the same machine in the same shipment has the same issues ....
Now we wait a response between HAAS and our HFO.

The only thing we could think about is a mechanical or software issue... Backlash in Z is bellow 5 microns. X-Y have a little bit bigger backlash but bushing bores I interpolated were spot ON.
So mechanics seems to be fine.

Any info on your problem ?

 

[coffeetek]

I am afraid I see more than that, more like 0.2mm or more which is huge. Machine is anchored. I did not have time to get to the bottom of the problem yet and demand the solution, but the difference is so big that is triggering tool break detection when I had it set at 0.1mm and 0.2mm and I don't think its software, this is has to be hardware.

 

[fmari --MariTool-]

How is the coolant temperature. How much it is increasing thruought the day?

 

[D Nelson]

We have 2 umc 1000 as one is about 16 months old it does not have temp sensors in the z head that machine does a lot better holding the z the new machine has sensors in the z it has troubles holding the numbers. Haas says new software coming to fix it. I just got back from Mississippi setting up 2 new 1000 pallet pool machines they both have the same issues. We touch off tools on critical ops for now
Don


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[coffeetek]

How is the coolant temperature. How much it is increasing thruought the day?

I haven't measured it, but this is not the only machine in the shop and no other machine shows any Z-movement like this. Not Brother, not Doosan and not Matsuura.

 

[GeorgiMirov]

We have 2 umc 1000 as one is about 16 months old it does not have temp sensors in the z head that machine does a lot better holding the z the new machine has sensors in the z it has troubles holding the numbers. Haas says new software coming to fix it. I just got back from Mississippi setting up 2 new 1000 pallet pool machines they both have the same issues. We touch off tools on critical ops for now
Don


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Finally something reasonable .... there is a hope for us.

 

[Orange Vise]

Now to solve another UMC-500 problem which is huge Z-axis growth...

We've noticed this as well.

Up to 0.003" variation per side at its worst, but the error is doubled when hitting two opposing sides of a part with a facemill, so more like 0.005"-0.006".

Probing Z for every part and then using DWO reduces the error to a more reasonable amount.

 

[thesidetalker]

Probing Z for every part and then using DWO reduces the error to a more reasonable amount.

You get this much variation between every part? Or total variation throughout the whole day?

That's about the same growth I can see on my 2017 750SS, up to .003"

 

[mkd]

I'm just here to take a cheap shot at Haas' astoundingly terrible chip and coolant management.
been working with them since the nineties.
still terrible. lol
I should design an external scraper style conveyor that runs off the auger on their older VF mills. Place your orders..

 

[mkd]

I ran a Mikron HSK63 machine (similar to this haas) at 18k rpm for an hour. Re measure the tool in the Blum laser.
.0002"

BTW, not THAT much more expensive. To me, a much better value, hands down.