HAAS VF3 YT/50 Spindle Motor/Gearbox issue

[ERIC14779]

We have a 2011 Haas VF3 YT/50 10K spindle machine we bought brand new in 2011, and right from the start the spindle seemed to be very loud especialy when we ran it above 6 or 7K RPM.

 

We had a Haas tech in and he said it sounded normal and suggested we run a warm-up program....

 

It still sounded horable and 2 weeks ago after running all morning at 12:20 PM it started really squeling and fualted out (Spindle following error)

 

had the spindle motor and gearbox replaced, and now it sounds nice (with the new motor & gearbox).

 

Has anybody else had simular problems with 50 taper VF3's ??

 

Do you also run a warm up program ?

 

Again the problem was with the Motor/Gearbox NOT the Spindle Cartridge.....

[MotorCityMinion]

Warm up is required.

 

The waylube cools the spindle. A line was probably pinched during assembly. Were the tools warm to the touch after running them for a while? Did they "pop" when tool changing? The spidle probably siezed when it faulted?

[The_kid]

Never ran a YT but yes Haas machines are inheirently loud. I always run a warm up. usually takes about 10 mins in morning.

[ERIC14779]

deleted by eric14779

[mkd]

clearly, there is no way for this to be operator error or damage from a crash. sounds like a manufacturing defect that fell just outside of warranty.

i had a boss scuttle negotiations until they agreed to a 2 year warranty.

sorry that happened.

I've killed a 50 taper Haas spindle, but it was from years of abuse. 2" x 2" cut in steel or .012" chip loads in aluminum etc

[LancoUSA]

We do not have the 50 taper machines, but we have two sister vf-2's and one had really bad clunking noises in the transmission for a long time. it took a lot of looking into it and multiple visits from Haas tech's and finally a new transmission and motor were installed. The machine has not bothered since with that problem. I believe they have a certain protocol of things they have to check and try before they can do a warranty on a transmission. We do warm up every morning also. The machines give a message sometimes and require you to do one if the machine sits too long over a cold weekend.

[ERIC14779]

UPDATE.......

 

Now yesterday the machine started sqealing again.... this time the surface finish showed vibration and the Z was all over the place

 

Haas tech got here today with a drawbar force tester.... that was good but he said that the spindle cartridge is bad.... wating for Haas

corporate to review the video and reports....

 

looks like the spindle will be coming out.....

[LancoUSA]

Do you guys use Trident machine tools in CT?

[ERIC14779]

nope we are near Buffalo... so it is NYMET in Fairport NY (Rochester NY)

[ERIC14779]

Haas corporate still dilly dalying around.... now we found that there is .100" of end play in the spindle !!!!!!

 

And we still are deciding whether or not the spindle is bad ????

[Josh T™]

A customer had issues with a VF8 50 taper in the past. Ran at 10K for hours at a time. Balanced holders solved the problem.

 

Sounds like you've got a lemon.

[ERIC14779]

Haas Tech puled the spindle cartridge out yesterday... new one to arrive today for installation

 

Josh, I will check to see if we are using balanced holders...

[ERIC14779]

Josh, Yes we are using balanced tool holders.

 

 

New Spindle installed Friday...... Ran Break-in program....

 

Did not last even one 12 hr. shift....... locked up

 

 

here we go again...

[Josh T™]

Lemon

[Brando]

does the 50taper have the air\oil lubed bearings like the 40tapers? if it is may be the tec didn't hook it up correctly or the oil metering orfice is clogged with goop, we had a 40taper burn up bc of the goop build up and it was getting no oil in the air mister for the spindle bearings, and we almost burned up the replacement because nobody looked at the air oil system\lines

[The_kid]

I guess the main question is does it hold the ground down or does the floor tend to hop around? sounds like a lemon. I can't see how a cert tech wouldn't be checking on all the possible causes. they should just replace the whole machine if they can't figure it out.

[ERIC14779]

UPDATE......

 

Well Haas put in the second Spindle ..... Checked the Spindle lube system.... Said that it was "fine" but cranked up the pressure anyways... ???

 

So far so good on this spindle.....

[Newbeeee™]

but cranked up the pressure anyways... ???

The fact that you have had spindle probs from day one means it wasn't fine.

The fact that they have now increased the pressure means it wasn't set right to start with.....providing the new spindle lasts.

[ERIC14779]

newbeeee

 

Yep that is what I figured as well.....