Measuring runout of a torus

[[Ro...]]

I am using Calypso 8 with a Duramax 5/5/5 with Vast XXT head. I don't have the Curve add on though, just standard Calypso, and I'm trying to measure the runout of a torus bead. I've tried using GD&T runout, radial runout, and axial runout and none of them allow me to select the torus. I tried making an intersection in hopes that I could use the outside edge of the torus, but that didnt work. I also tried recall to make a 3D line but that was another failure. Any suggestions on how I could do this?

[[Wo...]]

Maybe try to measure "Circle on a torus" in a few places and use runout of each of them? I think I've done it before.

[[Ri...]]

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This has always worked best for me.

[[Je...]]

Measure "Circle on a Torus" in at least 6 locations (60 degree separation).  Since you are using an XXT the initial point pickup will need a reverse over-scan for optimal accuracy (a second circle path that starts where the first ended and go back over the scan to pick up lost point data from stylus normalizing).  Depending on size (hard to scale from image), it may be beneficial to constrain the size for optimal fitting.

Do this in 6 places minimum with even distribution/spacing.

Create a Point > Recall > Select 1 circle. (creates center point)

Repeat for each circle scan path you created.  

Create a circle > Recall points > Select points you just created as center points for torus scans.

Apply the runout control to the circle construction you've just created.

There are ways you could do this with patterns and indexing as well but for ease of direction, I provided the generic manual steps.

Alternatively you can scan around the torus D1 in 4-5 places (full diameter scans at different points on torus) and then create intersection planes to create a circle from feature points in as many places as you prefer without adding cycle time.   Each approach has its benefits. 

 

One question comes to mind though:  Are you sure the torus requires a runout check?  This is not standard in most scenarios on a turned component as the end radii are usually clearancing and not sealing surfaces.

[[Ri...]]

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As usual, solid advice.

I thought the part resembled a Swagelok VCR Gland perhaps something like a "SS-4-VCR-P" (Or A‑Lok, Tylok, etc), I have literally made about half a million of these in my machining career, I do not recall a runout requirement before, but I do know that radius is a critical sealing surface (If it is a VCR Gland).