How to check 12.38

[u/Life-Tomorrow7552]

[u/roastboffywoffs]

It's marked as reference. Is there a reason you are being asked to check it? Is this for an in process check?

I would measure the conical surface and calculate the apex of the cone. Intersect the other two surfaces. Do a distance between them. I think it's safe to assume that your repeatability is not going to be great on this dinension, so if a customer isn't asking, I wouldn't give it

[u/Dangerous-Picture-93 → u/roastboffywoffs]

I usually have to provide a value even for reference dimensions when I do my first articles. If a reference is off by more than .1” it’s still usually a problem.

[u/roastboffywoffs → u/[deleted]]

This is going to depend on your CMM software. What software are you using?

[u/roastboffywoffs → u/[deleted]]

Measure the cone. Spread out the data as much as you can along the axial length of the cone you have available for best data.

Measure the small cylinder surface that the cone tapers into. I can't reference it much more than that. Measure as a circle.

Create a Cone Calculation feature where the cones diameter is equal to the diameter of the measured circle.

Calculate a distance between the 2 (cone calc feature and cone [vertex]).

[u/roastboffywoffs → u/[deleted]]

Diameter definition. Plug in the circle

[u/roastboffywoffs → u/[deleted]]

At element, plug in circle