mkalavitz
Aluminum
- Joined
- Sep 7, 2006
- Location
- Grand Rapids, MI
Hello,
I have a oldie Mazak SQT10MS.
Recently, I have been having alignment issues with the rear spindle. Even had to slow the transfer down because the rear spindle would
sort of 'chatter' on the transfer. I slowed it down to 20% just so we could get parts off the machine. These were non-critical parts.
I would also notice that the rear spindle would appear to 'lift' a bit when drilling in the back. Small pecks no big deal, but when pushing a drill
I could see it lift up.
Then, I started seeing the drill coming in off center on the rear. So, I determined it was well past time to have a machine repair guy in to do
adjust the rear gibbs and give it an alignment.
Well, he spent nearly the entire day pulling the gibbs out, cleaning them and re-installing. When he left, we thought I was all set to start machining the next
morning.
Well, I still have alignment problems...arrrrr....machine still down and no parts coming off from it. So, now, the machine repair guy can't get here because
he is dealing with COVID and backed up big time.
Looking at this a little closer with another machinist. We believe that the gibbs still need to be adjusted and then the rear spindle aligned.
We put a pry bar underneath the rear spindle to see if we could move it. When in the home position, we can pry/move the front and back of it up and down
just over .010". I would assume that this is some of my problem.
So, I am trying to put together a strategy to get this thing straightened out.
1. I want to check/adjust/snug up the gibbs. Does anyone have a proper procedure for doing this on this machine? If not, gibbs in general? How tight
do I go? Do I check head movement? Or, do Icheck load on the rear spindle when doing a transfer?
2. How about alignment? Proper procedure to get the rear spindle perfectly in light with the front spindle i.e. exactly colinear.
Any hints, suggestions would be greatly appreciated. Or, is this machine just too much out of wack and it needs to go to the bone yard? I hope not. It is a
a good machine when it is up. But, it needs a little TLC.
Please advise..
Thanks Much!
Mike
I have a oldie Mazak SQT10MS.
Recently, I have been having alignment issues with the rear spindle. Even had to slow the transfer down because the rear spindle would
sort of 'chatter' on the transfer. I slowed it down to 20% just so we could get parts off the machine. These were non-critical parts.
I would also notice that the rear spindle would appear to 'lift' a bit when drilling in the back. Small pecks no big deal, but when pushing a drill
I could see it lift up.
Then, I started seeing the drill coming in off center on the rear. So, I determined it was well past time to have a machine repair guy in to do
adjust the rear gibbs and give it an alignment.
Well, he spent nearly the entire day pulling the gibbs out, cleaning them and re-installing. When he left, we thought I was all set to start machining the next
morning.
Well, I still have alignment problems...arrrrr....machine still down and no parts coming off from it. So, now, the machine repair guy can't get here because
he is dealing with COVID and backed up big time.
Looking at this a little closer with another machinist. We believe that the gibbs still need to be adjusted and then the rear spindle aligned.
We put a pry bar underneath the rear spindle to see if we could move it. When in the home position, we can pry/move the front and back of it up and down
just over .010". I would assume that this is some of my problem.
So, I am trying to put together a strategy to get this thing straightened out.
1. I want to check/adjust/snug up the gibbs. Does anyone have a proper procedure for doing this on this machine? If not, gibbs in general? How tight
do I go? Do I check head movement? Or, do Icheck load on the rear spindle when doing a transfer?
2. How about alignment? Proper procedure to get the rear spindle perfectly in light with the front spindle i.e. exactly colinear.
Any hints, suggestions would be greatly appreciated. Or, is this machine just too much out of wack and it needs to go to the bone yard? I hope not. It is a
a good machine when it is up. But, it needs a little TLC.
Please advise..
Thanks Much!
Mike