I'm having a bunch of issues with my Tormach after moving it to a new location. Can't quite pinpoint what is the root cause, so I thought I just post it here.
I set up the Tormach 1100 Series 3 in a new location. I have an old concrete shop floor that is not completely flat but also not absolutely terrible. I noticed that a z-probe would
move a lot when I was pulling a little bit on the motor housing, so I checked the z-axis gib.
Turns out that the top z-axis gib screw was completely loose (I could turn it easily with my fingers). I therefore adjusted the z-axis gib using lost motion to judge proper "tightness".
After that procedure, I noticed that tram was off by a lot (.012") in the x axis. It was dead on before adjusting the z-gib.
It took .04" (1mm) of shims under the front left mill pad to get tram back on. I concluded that something must be really wrong and I must be twisting the mill. I called tormach, but they told me that this is not
unusual, especially if I have an uneven floor. I was not really satisfied with that, as I felt that there must be some other issue.
I spent a good amount of time to get the mill stand as level as possible by adjusting its feet. However, this didn't change anything regarding to tram. It seams that the adjustment of the stand feet has no measurable influence on tram at all. I can use a car jack on one corner of the mill stand and jack it up to simulate a super uneven floor, but tram stays exactly the same.
I then kept experimenting with lifting different corners of the mill base, lifting each corner individually, or at one point I lifted on the left side in the middle so the mill was only standing on the right two feet and the left lifting point. No matter what I did, I always came back to needing .04" of shims on the left front leg as the best option to get tram on.
Any ideas what might be going on?