Hi -
I have an older Haas HL1, bought in the mid-nineties. We have had trouble with the turret alignment. We've never had a major crash, but I had a job to turn a true radius on the end of a piece of .625 bar, and when checking with a radius gage, the radius was flat on the end.
After verifying that my program was correct, and calling Haas for other suggestions, they suggested we check turret alignment. It was off, so with Haas' help, we went through the procedure to realign it.
Several months later, we got the same job again. Had the same problem and had to realign the turret again. I didn't think the machine had been crashed in the interim, but I couldn't be sure.
So - last month I got a job that entailed machining a 20mm h7 bore. I wanted to ream the bore but it cut oversize. I checked the turret alignment, and it was off again. I know there have been no crashes, and the machine has had very light use since the previous alignment. It seems that the turret will just not hold position.
Has anyone else had this problem?