A wormwheel tooth form is generated from a hob with trapezoidal shaped teeth, which I don't think would be reproduced by simply bending the worm into a circular shape.

See this video of how they are actually made http://pounceatron.dreamhosters.com/shop/hob/hobbing-gear.mp4

I can't think how you would faithfully recreate this in MoI or any other CAD come to that without quite a bit of work.

 

Martin (2).