Hey everyone!
Recently, I've bought my first real milling machine, an 1986 ORADEA FUS-22. Overall, it's in a working condition, but when turned on to higher RPM is very loud and seems to be leaking oil. Well, and vertical milling head is from Heckert FUW 250 installed with an adapter plate, it had a bit of play (around 0.03mm) in the spindle when pushed by hand.
I've decided to take it apart for general inspection and to actually figure out how everything works. While doing so I've got a million questions, so if nobody minds I would post them here as I go, maybe somebody would be able to help me. So far, I've been meditating a lot on oiling subsystem )
Here's the machine as arrived(with table taken off for now):
First, I'll start with a simple one.
1) For some reason, vertical milling head is packed with grease. Manual for it says it should use hydraulic oil (HLP36), and it obviously equipped for it (level viewing window, intake hole). I have a feeling that it is not a good practice and grease will just get thrown away leading to gears having to work dry, am I wrong? Should I clean up the grease and replace with oil?
2) The way gears are mounted.
All gears in the horizontal spindle can move by around 1mm along the axle.
For example this one has both rotational play (most likely key or key slot are a bit worn) and can move forward and backward by around 1mm. What concerns me is that it doesn't look like it was supposed to be fixed in place rigidly. There is a set screw with a lock nut on it, which leads me to thinking that set screw was not supposed to be tight against the axle. Also, I can see that there is a groove underneath the gear into which that set screw would go.
Same seems to be true about other gears. Main drive gear (long one) can move along the axis a bit, the one that would drive vertical milling head as well. Should I leave it as is or make it, well, more rigid?
3) Horizontal bearing oiling
There are two grease nipples on the horizontal spindle, they seem to be going into the bearing groups. For some reason, on the oiling scheme they are:
* on the wrong side of the machine
* not marked at all, although drawn
I wasn't able to find a channel that would lead oil from the main spindle cavity into the bearing groups, so my guess is that bearings should be lubricated separately. My question would be what to use for that lubrication? These holes were packed with thick grease that looked like it was new, but I don't understand how would it get into the bearing, it would just stay in the channel forever (one of the channels was also blocked with a bit of casting size of a pea). Maybe it should be oil? Or just push grease into there until it fills bearings full?
4) I honestly don't get the whole oiling scheme. I do understand that oil will get up on the gears and will get splashed around in the horizontal spindle cavity, but from there I only found two channels that lead onto dovetails(and again, one of the channels was blocked, looked like it was painted over), I don't understand where would the oil go from the dovetails. Or, maybe, why wouldn't it go to the outside of the machine instead of inside of it. I've reached attachment limit of that post, so can't show pictures for now )
Recently, I've bought my first real milling machine, an 1986 ORADEA FUS-22. Overall, it's in a working condition, but when turned on to higher RPM is very loud and seems to be leaking oil. Well, and vertical milling head is from Heckert FUW 250 installed with an adapter plate, it had a bit of play (around 0.03mm) in the spindle when pushed by hand.
I've decided to take it apart for general inspection and to actually figure out how everything works. While doing so I've got a million questions, so if nobody minds I would post them here as I go, maybe somebody would be able to help me. So far, I've been meditating a lot on oiling subsystem )
Here's the machine as arrived(with table taken off for now):
First, I'll start with a simple one.
1) For some reason, vertical milling head is packed with grease. Manual for it says it should use hydraulic oil (HLP36), and it obviously equipped for it (level viewing window, intake hole). I have a feeling that it is not a good practice and grease will just get thrown away leading to gears having to work dry, am I wrong? Should I clean up the grease and replace with oil?
2) The way gears are mounted.
All gears in the horizontal spindle can move by around 1mm along the axle.
For example this one has both rotational play (most likely key or key slot are a bit worn) and can move forward and backward by around 1mm. What concerns me is that it doesn't look like it was supposed to be fixed in place rigidly. There is a set screw with a lock nut on it, which leads me to thinking that set screw was not supposed to be tight against the axle. Also, I can see that there is a groove underneath the gear into which that set screw would go.
Same seems to be true about other gears. Main drive gear (long one) can move along the axis a bit, the one that would drive vertical milling head as well. Should I leave it as is or make it, well, more rigid?
3) Horizontal bearing oiling
There are two grease nipples on the horizontal spindle, they seem to be going into the bearing groups. For some reason, on the oiling scheme they are:
* on the wrong side of the machine
* not marked at all, although drawn
I wasn't able to find a channel that would lead oil from the main spindle cavity into the bearing groups, so my guess is that bearings should be lubricated separately. My question would be what to use for that lubrication? These holes were packed with thick grease that looked like it was new, but I don't understand how would it get into the bearing, it would just stay in the channel forever (one of the channels was also blocked with a bit of casting size of a pea). Maybe it should be oil? Or just push grease into there until it fills bearings full?
4) I honestly don't get the whole oiling scheme. I do understand that oil will get up on the gears and will get splashed around in the horizontal spindle cavity, but from there I only found two channels that lead onto dovetails(and again, one of the channels was blocked, looked like it was painted over), I don't understand where would the oil go from the dovetails. Or, maybe, why wouldn't it go to the outside of the machine instead of inside of it. I've reached attachment limit of that post, so can't show pictures for now )