4th axis y offset issue

[Enrico_Hoover]

Hello!

I am having some issues with the 4-axis probing routines, I have tried both the axis and stock center 4-axis probing routines, and both routines aren’t finding the center of rotation OR the stock center.

I attached both sides of the workplace, it looks like the center is maybe 2mm off.

The encycam simulation shows that this shouldn’t be happening , I have remeasured the probe and tools a million times and still I have varying degrees of failed parts ( i suspect the z offset is off too).

I am on a pcnc 440 with a microarc 4 and am using the passive probe kit (PN 50355)

I’d like to think its a gcode problem with the routine in pathpilot and if i write the gcode myself then I wont have this issue but I dont know for sure.

Has anyone here had the same issue? I tried searching, but it seems like this combination of 4 axis use and probing has left me with an uncommon problem.

[Dr_Harold_Jones]

You gotta make sure your A is square and then make sure the stock is square.
What I would do though is rough it down to almost final thickness and then drill the center hole.
Then set origin from that on each side. Then manually set the center from those calculations. Then reference A,
Then A180 and probe the center. If that comes close to X, Y, 0 then it was setup. Run the program and it should be good. If not it was the program.
Also is that stainless because it looks like you might need a tail stock. Stuff moves around a lot in the A vice. The longer and harder the more it moves around, no matter how tight you get it.
When you put it in the vice mark the stock so you can tell if it’s moving while your running.