Hey guys hope you don't mind me jumping in here to ask questions, but I figure I'D ask here, considering that the two mills are clones of each other. Please keep in mind I would class myself an extreme beginner, having only owned the mill 6 months or so, with the last I have used any form of machinery of the form was around 10 years ago in high school...
So basically what happened is while using a roughing end mill to bring a piece of stock down to size, I ended up crashing the head a bit, which has caused some issues in the mill, with the mill getting a good load of vibration occuring, and an intermittent kind of rattling noise, and a lot of noise.
I started pulling the mill apart and ended up pulling out the gear assembly which the spindle is mounted in out. The gear on the low speed side's (the smaller gear's) bearing had obviously bought the bullet, and was really rough. So I figured at this point I would be best to replace both bearings on that shaft.
I then reassembled the mill, and found that while some of the noise was gone, there is still an intermittent rattle, and vibration, and some minor noise. I have tried greasing up some parts, which has aided in reducing some of the rattling noise, but there still is the issue.
However the interesting thing I have found, which I don't know if this will aid in the problem solving, is that all the major noises, etc, only happen while the mill is in the low gear range. If I run the mill in the high range, there still is some noise, however it is extremely minor. It is leading me to consider if maybe the lower bearing on the intermittent shaft is shot, or, would that be an unlikely scenario, and would it be the angular bearings in the spindle that need attention?
TL;DR: Crashed mill. Mill now making an intermittent rattling noise while in low gear selection. Replaced bearings on spindle drive shaft, which helped some, but not 100%. Could a crash damage the bearings on the intermediate shaft in the gearbox?
kizzap
So basically what happened is while using a roughing end mill to bring a piece of stock down to size, I ended up crashing the head a bit, which has caused some issues in the mill, with the mill getting a good load of vibration occuring, and an intermittent kind of rattling noise, and a lot of noise.
I started pulling the mill apart and ended up pulling out the gear assembly which the spindle is mounted in out. The gear on the low speed side's (the smaller gear's) bearing had obviously bought the bullet, and was really rough. So I figured at this point I would be best to replace both bearings on that shaft.
I then reassembled the mill, and found that while some of the noise was gone, there is still an intermittent rattle, and vibration, and some minor noise. I have tried greasing up some parts, which has aided in reducing some of the rattling noise, but there still is the issue.
However the interesting thing I have found, which I don't know if this will aid in the problem solving, is that all the major noises, etc, only happen while the mill is in the low gear range. If I run the mill in the high range, there still is some noise, however it is extremely minor. It is leading me to consider if maybe the lower bearing on the intermittent shaft is shot, or, would that be an unlikely scenario, and would it be the angular bearings in the spindle that need attention?
TL;DR: Crashed mill. Mill now making an intermittent rattling noise while in low gear selection. Replaced bearings on spindle drive shaft, which helped some, but not 100%. Could a crash damage the bearings on the intermediate shaft in the gearbox?
kizzap
