Adapter Plate

[[To...]]

I am setting up some angled stylus systems.  I don't not have a Zeiss tool to set these angles.  I am using my CMM to measure the angles.  Which features on the adapter plate are the best for setting up a base alignment?  I am currently using the setup shown in pic.   Is there a better feature for ,the planar, i.e. the slot at 6 o'clock?

 

On a side note, I assumed the 3 pins would be precisely 120° apart but they are not.  However, a circle created from the 3 pins shows to be concentric to od.

 

 

Edited 4 hours ago

[[Ma...]]

Isn't this to set rotation on that shaft?

For measuring that angle i would use machine and scan a shpere with probe shaft to obtain a cylinder which can tell angle.

For your question: if you plan to rotate as my picture, then you should have adapter plate almost fixed - so use it as base alignment with all 3 cylinders.
If you want it precise:

• mesure 3 circles -> contruct a plane from them
• measure 2 lines per cylinder paralel with previously created plane
• combine to obtain firm alignment

Now measure your angles on future probe shafts.

[[To...]]

Please sign in to view this username.

 ????

[[Ke...]]

IDK... to be honest, 95% of the time I set the angles of the probe visually, with a printed out chart. 

[[To...]]

Please sign in to view this username.

  Does this also apply to rotations about the center axis?

 

Edited 3 hours ago

[[Ke...]]

Please sign in to view this quote.

Yes, indeed

[[Ma...]]

Please sign in to view this quote.

Well you wrote you are measuring those cylindrical pins against probe to get angle.

When i was doing angle i was loosening a screw to adjust angle around Z axis.
Then i was measuring with probe shaft the ref. sphere so from measured points i got cylinder - this way i got angle in Z axis and also tilt.

What was confusing for you? Definition how to measure adapter pins?

[[Mi...]]

I've used this and a sine vise to set all of my angles for years now and it works perfectly. Everything is within about .00015" perp and parallel.  If you have the opportunity to have one made, I can send you the .stp file? It would save a lot of time setting up stylus systems in the future but doesn't immediately address the issue at hand. 

[[Je...]]

Please sign in to view this username.

, nice job on using the CMM to measure your stylus system angles.

You should ditch the aluminum extensions, though.  The CFX extensions are a worthy upgrade.