Haas VF Toolchanger noise help

Rohner_Machinery · Apr 9, 2020

Wondering if anyone has any insight on what this might be. Every 4-6 toolchanges, it makes this weird grinding noise. It's very strange that it does it intermittently like that. Here is the video. The first couple tool-changes are normal, then the 3rd tool change you'll hear the noise. I was told it might possibly be a bad pneumatic check valve. Any help is greatly appreciated.

Milland · Apr 9, 2020

That doesn't sound like a vibrating check valve to me, but I dunno. Could it be the motor that drives the indexing cam for the carousel going into resonance for some reason? If you can safely put a stethoscope or similar on the carousel in the area of the cam and then generate that noise it should be clear (or not).

Larry Dickman · Apr 9, 2020

can't tell for sure, but here's something to check. The tool pocket has a groove in it that rides down a bearing as it goes from horizontal to vertical. The bearing is held in place with a shoulder bolt and a nut. I had the nut vibrate loose and jam up the pocket. Sounded like a big impact wrench.

Booze Daily · Apr 9, 2020

Behind the panel with the pocket numbers on it, there is a sight glass. Is there enough oil in there?
Mine does some weird stuff when it gets low. It never made a noise like that though.

6105Mossa · Aug 31, 2020

We have a Haas tech here now to work on our Haas VF3 to fix tool changer noise. He took tool changer apart and couldn't find problem. His last thought was to do a software update seeing it was a 2018 model. That was it fixed the noise we were having. Hope this can fix your problem

Milland · Aug 31, 2020

Cool, thanks for the update (no pun intended)!

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