Hi everyone -
Alright, this is probably going to fall into that "stupid question" category, but this has happened to me twice now. The first time I thought I had understood the issue, but now I'm pretty convinced I'm just doing something wrong -- operator error -- but I just can't figure out what.
Twice now, after turning the Handibot on it's side to either do something to the base or change a bit, I've ended up in this situation where somehow, the Y-axis has "slipped" in such a way that the limit switch no longer makes contact with the Y-axis Anti-Backlash Nut Mounting Bracket. (I'll just call it the "bracket" from here on out.) See the attached picture.
The first time this happened was after doing the Y-axis backing plate upgrade and squaring the base. I figured I must have slipped the exoframe in relation to the base during the upgrade, so I disconnected the bracket from the base, moved the exoframe about 3/4" by rotating the drive screw, then reattached. Problem solved.
However, today, I was simply changing bits. When I starting preparing the machine to cut and did the XY-zeroing, Y-axis again ran forever, and looking below, I could see the limit switch was again not making contact with the bracket before the end of the ball screw was reached. Since I had not disconnected the bracket from the base this time, I can only assume that something is slipping when the Handibot is being turned on its side. But despite looking at this for quite a while, I can't figure out how it's happening and thus how to fix it.
Any suggestions for how to resolve this and, perhaps more importantly, what I'm doing that is so stupid?!?
Thanks!
Eric (Moron in California)
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