Circle End Points

[[Ed...]]

Hello everyone,
I think this is stupid question for most of you, but....
How can I find the end points for circle? Like in attached photo? Maximum coordinates in every direction?
And for example if I want to find the point 20° from maximum point from +X ???

Capture.PNG.png

[[Mi...]]

Sounds like you'd be using 3D lines originating at the centre of the circle (either with formulas or a secondary alignment), angled to whatever angle you want. Then intersect the 3D line with the Circle.

[[Ri...]]

Here's a quick approach that I came up with.

Measure the circle - then create an alignment where the circle is the X,Y Origin. You can then measure or recall feature points into a Curve of that circle. From there, use a Min/Max Coordinate inside of that alignment. With the Curve, you can select which axis to take the measurement.

Let me know how that works out for you.

[[Ri...]]

Please sign in to view this quote.

This wouldn't really net the actual point though. Just a theoretical point based on a perfect circle.

[[Ed...]]

Please sign in to view this quote.

Unfortunately I do not have Curve option 🙁
I did it before like Michael Schultze wrote, but I'm not sure that it is the best way also

[[Ow...]]

Several different ways to skin a cat 😉 .
I've never used this method with single points but, it might work. There are several other options other than angle range.

[[Mi...]]

Please sign in to view this quote.

Okay learning experience for me.

Why not?

The intersection construction will intersect with the calculated perfect circle based on whatever evaluation method is selected(LSQ, OTE, etc) and not the measured points?

I thought it would go by the filtered measured points.

I've used Owens method to correlate diameters to a 2-point measurement device, it works.

[[Ri...]]

Please sign in to view this quote.

The Associated Feature that is generated has perfect form. As your form error goes up, a lot of your actual points do not lie on the surface of the Associated Feature (in the case of an LSQ they will be evenly distributed below and above the Associated Feature). When you create an intersection, you are intersecting an Associated Feature with an Associated Feature.

So if you have a lot of form error, you will see differences between the actual point and the intersection point.

Now if your form error is small, it doesn't really matter.

[[Ed...]]

Please sign in to view this quote.

Yup, this works, this works like separate segment evaluation, but in this way I can`t get any information about end points 🙁
I`m looking for something to get simple point on actual form.

Ekrānuzņēmums 2023-01-21 093416.jpg

[[Is...]]

Please sign in to view this quote.

I think that’s the solution that you are looking for, just select a point instead of a circle element and be sure than the Angle range cover at least one point of the step that you have in your Scanning strategy.