Question regarding Perpendicularity

[[Ra...]]

How can I best explain this result to my boss ?

2 Circles on a cone forming a 3dline using recall

datum plane is below the cone

Thank you .

2.jpg1.jpg

[[Ja...]]

I think you explained it here pretty well.

[[Ja...]]

You might get better results if you take some random single points on the cone, create an alignment using that cone a spatial, and then measure your two circles using that alignment.

[[Er...]]

I get more accurate results on Perpendicularity when I measure with lines instead of circles.

I use True Position to communicate Perpendicularity variations. With Additional Position Result and Axis End Points turned on. It gives them numbers they can use to evaluate the Perpendicularity.

[[Ra...]]

Could someone explain the calculation behind this graph please.

5.jpg

[[Ri...]]

Trying to display 3d graphs in 2d space is difficult and sometimes useless.

Either way, it is showing you that the line is tilting away (not square) from the datum.

Like someone else said, showing the Position at the top and bottom will also help show this as you should see the top pushed to the positive direction, and the bottom pushed to the negative direction.

[[To...]]

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The red circles represent a .200 dia cylinder of the tolerance zone perpendicular to the datum feature. The black line is the nominal line. The blue line is the actual line. The line must fall completely within the .200 dia cylinder, which it does. The dotted cylinder is the size (.178 Dia) of the actual cylinder that the blue line fits within.