Hello JerryFlyGuy
I built a spindle a few months ago that was oil filled and did 1.5~10K RPM. The only way around the spec was to use a mechanical seal. It was a simple carbon on steel arrangement...
Type: Posts; User: Big_d
Hello JerryFlyGuy
I built a spindle a few months ago that was oil filled and did 1.5~10K RPM. The only way around the spec was to use a mechanical seal. It was a simple carbon on steel arrangement...
I Was servicing one of our CNC's today and noticed one of the delrin strips on the X axis has started to work its way out past the wiper. I have never tried to reattach this before any tips? The...
Check the cables they have been the cause of many a drive failure on these.
Ours was a 78 from memory? We had a different brake on the end of the spindle motor. The spindle brake is part of the live spindle option and we didn't have this on our machine as it was only used...
Hello pinguS
When I normally test this I do something a bit dodgy but it gives me a good answer each time. I will put my foot on the motor pulley (Belts removed) and load it a little at low jog...
Without stressing the obvious have you considered putting the cover on??? Perhaps you could try throwing the wood shavings into the bin rather than on your pc.
But seriously a low cost fix for that...
I would say it is the spindle motor resolver. This causes the spindle motor to hunt as the controller try's to fire the phases to keep the rotation correct.
Drop the belts of the motor and check...
Wow a LC40 a lot of machine for that kind of money. They are very solid and quick if you use both turrets at the same time. Hence the 60hp DC motor (About equal to a 25-30hp ac motor). We used to...
On some machines you can get away with this, but you are taking a BIG risk as if the spindle is powered whilst holding it could take off if you manage to move it a little. PLEASE don't do this!
The old chestnut " Coolant/Moisture contaminated spindle bearings".
The air you feed into the spindle bearing cavity needs to be the driest and cleanest you can achieve (As you have already...
Hello Henrik
You could easily do away with a regulator for the positive pressure by just using a short plug and drilling a small hole in it (1~1.5mm) then feeding the air past it. A little trial...
To get a good cut and finish you have trouble breaking chips of Teflon. I have used a vacuum attachment on the tool post before to control the stream and keep the dust down.
Cheers
Darren
Hello Henrik
It is a shame that you had to return it to the grinders, But this job will get them onto their toes.
The top diameter will also require regrinding as it will be difficult to true up in...
If it was my machine I would confirm the load via a tong test meter. There could be a problem with drive belts??.
Mike
20000 rpm with a BT30 you don't want much do you. :drowning:
To get those sort of speeds with such large bearings is a challenge. You could get it up to 15000 rpm with a few changes with a...
Henrik
I wouldn’t be to worried about the moisture as it doesn’t really matter with a tool in spindle setup. The worst thing that could happen would be it could make it cut oversize slightly. It is...
Henrik
10 - 20 microns run out is not a lot but will show up with long tooling. Where is that measurement taken from, the tool cone? Tool cones are quite difficult to machine (Even machine tool...
I nearly forgot, Make sure you have clearance between the bottom face of your tapers as they are not made to run true off that face. For that style of drive you need a HSK.
Cheers
Daza
Very nice work H.O!
Those bottom bearings should be good for 6500 rpm without any problems. If you ever make another may I suggest a small change to the way you retain the bearings on the bottom...
We had this problem with one of our 810's a few years ago. 2 weeks and the back up battery was dead. It was the memory board inside the controller, I don't know what it was exactly but once replaced...
I think you would be able to get a little better casting if you did a few things to the mould. You may have some hydrogen in the metal but I think the holes are mostly due to not having enough...
Hello gearsoup
This is a tricky one,I am making a few assumptions as I have never seen one of these machines but they are mostly all the same. Have you tried to operate the spindle orient switch...
You have probably all ready looked but could it be the attachment of the spindle encoder shaft being loose or bad bearings? It would explain both the hunting at low speed and the difficulty...
Hello John
Chirons I have seen all tool change on the fly. They don't use a fixed position to pick up the tool that's why their tool change is so quick. They use a single drive key/dog that is...
Hello Turner
That is a fairly common problem with a Chiron. 160 rpm on all of ours for the drive dog to engage. I am assuming you don't have a HSK taper in your spindle (Never had one of those...
I have had a bit to do with a single Femco machine. We had one in our shop for about 10 years 7 years ago.. One of the few machines we have had in our shop that didn't ever need spindle bearings...
It sounds like a pretty heavy crunch. Our Pumas have hydraulic turret rotation so I am not 100% on how yours would work but I know that the idler gear that rotates the turret must go into the correct...
Happy to help with any mechanical issues we got a couple of WM03's/FZ22?, DZ18 Magnum and a DZ12 that should be very similar to the FZ12/WM02. Sorry cant help with the Fanuc OM on a Chiron we also...
For home use it would be a lathe hands down. You have time at home and can do many milling jobs with a bit of ingenuity. I even have a home made slotting attachment on my old clunker in the shed. I...
The easiest way to square a spindle I have found is to fit a tool to the spindle that the magnetic base will stick to and set you dial indicator as wide as possible and clock the table. You should be...