I have just placed a query in this forum for UFactory to clarify some information in their manual.
Check out that post, it may have something to do with what we are all experiencing.
Basically, it seems that it is known by UFactory that when XYZ type commands are used sequentially
(versus specifying joint angles explicitly), errors will accumulate and repeatability can go out the window.
Page 60 of their 1.2.2 user manual says something about this but it is hard to understand the translation.
Hopefully they will reply and clarify these issues for us?
Note that they already mentioned in other posts that accuracy (ie the XYZ coords you actually end up
at) is not very good. I think they said about +/- 2 mm is all you can count on. They say that other similar
robots aren’t that accurate either.
On the other hand, they do claim a +/- 0.1 mm repeatability (ie when the robot moves to a spot, it might
not be the right place but it will consistently go to the same place). We, however, are seeing repeatability
errors of 2 mm and are trying to figure out what’s going on.
Have a good one,