profile of a cone

[[je...]]

Ive been trying to figure out how to apply Profile of a surface to this cone, see in attached photo highlighted in green datums in yellow

Also I would i check the .296 basic dimension. Ive tried all the distance tools but no luck even with 2nd alignment. Thanks for any help.

20221025_070011~2.jpg

[[Ma...]]

You don't check that .296 - with help of CAD you can get exact position for cone.
Or you can use trigonometry.

sin 52.5°= .296/x
x = .296/(sin 52.5°)
x = .3730998

If you will have intersection of A and B faces as ZERO - then use this:
diameter = 0, angle= 105°, length = calculated number, X = negative (calculated number + .037), axis = +X

[[To...]]

As Martin stated, you don't check "boxed" dimensions, also known at BASIC dimensions.

One method is to create a Free Form Surface if you have the Free Form Surfaces option. Using Free Form Surface allows you to select datum features A and B in a Surface Profile characteristic.

If you don't have the FFS option, some people suggest that you can create a Surface Profile characteristic using the cone as the feature, datum A feature as the Primary Datum, datum B feature as the Secondary and Tertiary Datum. I am not convinced this is totally corrrect.

Another method is to create a Geometry Best Fit Alignment using datum features A and B, allowing 6 degrees of freedom with outer tangential evaluation. Then, create a Surface Profile characteristic using the cone as the feature and the Geometry Best Fit Alignment for the datum structure. I am not 100% sure if I have described this properly. Maybe someone can revise, if needed.

[[je...]]

I understand not checking basic dimensions. I just wanted to check it to know what to way to move.

[[Ja...]]

If you want to know what way to move to make adjustments, from the print it looks like dimension #43 will be completed by same tool that will make that cone.

If that's the case then first, measure that #43 dimension and adjust for it so that dimension will be same as nominal.
Then, make a cone calculation feature to get height of a gage point at a specific diameter and check deviation and direction in height result.

(Maybe you already know this but to calculate both adjustments in one go, you need to play around with cone calculation feature so that it takes into account deviation of #43 dimension -- To do this first get nominal height (1) at that specific diameter and then get actual height (2) by changing diameter to specific diameter + deviation of #43 dim, the difference between 2 and 1 is your height adjustment combined with diameter adjustment from #43 dimension)

[[Th...]]

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I believe that when evaluating the surface profile without Freeform, you could also set the toleranced feature, i.e., the cone, as the tertiary datum feature in the surface profile characteristic.

[[To...]]

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I'm guessing it really doesn't matter what you use for the tertiary feature as all of the necessary degrees of freedom are already controlled by A and B.

[[Th...]]

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True here. I think it matters more when you have one or more degrees of freedom unconstrained, but I don't usually have an opportunity to apply it in this manner - mostly using bore patterns for positions and such.