3-D Splines tangent mate in Solid Works

[Don84]

I am trying to put a tangent mate on a 3-D slot in Solid works.

The slotted part is a tube. Initially, the slot comes out straight and then curves by a quarter helical turn. I created the feature with 2 cuts, i.e. a straight cut & a helical swept cut. The corners can be filletted to get a single surface on the slot.

Normally to achieve a tangent mate, a fitted spline is required in the sketch. This works fine when the slot is 2-D, i.e. a single cut. But it wont work with a 3-D feature.

To get around this, I generated a 3-D spline in a 3-D sketch. But I can not extrude a 3-D slot with a 3-D sketch in the direction I want.

Does anyone have any ideas ? Thanks..

 

[cloa]

Don't double post. Click the Inappropriate post?
Why you'd even consider posting here is beyond sense!