GD&T Angle Tolerance Stackup

[copyboy]

Imagine you are assembling a "pie" with 100 slices. The mating surfaces of both sides of the slice must be defined with high precision. This is easy to model but I haven't found an elegant way to geometrically tolerance the angled surfaces on the drawing. In the past we have used angles and toleranced chords at various elevations. To make it more interesting, sometimes the mating surfaces are flat sometimes curved! The tolerance should be related to the axis of the pie which passes through its center perpendicualr to the pie. Any ideas?

 

[silverado8405]

What if you toleranced your angles and then used profile of a surface to control the mating surfaces?

 

[Mech2003]

Set datum to first side of the slice, second datum to circle and give position tolerance for second side. You can add also straightness and flatness for second if nesseccary.