Gage Diameter on Sphere

[[Ri...]]

Calypso 2016 v 6.12.x
Its simple when you create a Gage diameter on a Cone, how can a Gage Diameter be created on a Sphere?
See attached image.
I do not have PCM.

Gage Diameter on Sphere.jpg

[[Cl...]]

There's probably a couple of ways to achieve this, but plane with
offset, intersect sphere & plane. That's the first thing I thought of.

The difficult part is going to be accurately measuring that small sphere
segment.Two, or three circle segments, and constrain normal vector?

[[An...]]

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The circumferential geometry reduces the "small arc error".
See attached.

theoretical_circle_on_sphere_1.xlsx

[[Ri...]]

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That gives me a variable diameter.
I need a variable location and a fixed diameter.
I did find a "Circle on Sphere" macro in Calypso but I cannot get it to show results that match a simple comparator measurement.

Features
...Special Geometries
......Circle on Sphere

[[Ri...]]

Just spit balling here, but could you create a theoretical cylinder at that diameter, and intersect it with the sphere or will you get cosine error?

[[Da...]]

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I've used Theo Cyl. before, works great ! Might wanna use a formula to get the Cyl on the same centerline.

[[Ri...]]

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This is what we ended up going with and it works great.

[[Ri...]]

OK. Awesome. I think the cosine error is when you try to do that with a cone.

Had a part that required you to drop a a 20mm and a 22mm ball into the cone, and measure the height of the ball(s). Had to work the trig out on that one.

Calypso needs an assembly function like CAD software does. Lol.