Problem with rotation around rotational axis

[[Ti...]]

Hello everyone,

This is my first post, so please let me know if I've forgotten anything!

I'm currently running this program on our Spectrum with RDS and have noticed that Calypso does not display the measuring probe symmetrically to the X-axis when it is swiveled, i.e., it is not parallel to the machine coordinate system in X. The first two images were taken at the same moment, but there is a rotation of the probe on the screen of approx. 20°, which is not present on the actual machine. The contour is traced on the machine parallel to the X-axis.
When I took a closer look, I also noticed that the circular segment, which should theoretically follow the green contour (first image), is also rotated relative to the component axis. The orange path is followed. This is consistent across all/multiple circular probing operations of the program.
The base system for this can be seen in the third image with the plane rotation empty, which means it should be defined as the machine axis (+X). I chose this because the component is rotationally symmetrical and can thus be defined more easily (without probing the vise/chuck it is in).

Why are the circular segments not probed symmetrically to the X-axis when rotated? Where does the rotation of the probe come from? I think these things are related, but I don't understand the cause.

[[ni...]]

Have you any rotation in the "Sonder" button ?

[[Ti...]]

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Thanks for the reply, no that is empty.

[[ni...]]

you could try to do the base system in manuel; and see after what the CMM do in automatic.

[[Qu...]]

This happened to me whenever the program doesn't have a planar rotation and especially when using cone and cylinder. It rotate the model out of of its original direction and misalign it with the machine coordinate. 

If you have a planner seat, try checking if the model still align with the machine.

 

My only fix is to remade the program since it is faster than fixing each feature again.

Edited Thursday at 06:08 PM

[[Ma...]]

You can either make an alignment from another program - i like to have one program from granite and something to tell machine - this is X axis and this is Y axis.

Then you can load this alignment into your program. Now use theoretical 3d line with features alignment from this loaded one. It will lock your rotation and you don't have to scan anything additional to lock it.

I don't think that using theoretical 3d line with base alignment will solve this rotation, but sometimes it's helping.