Inventor Loft Issue

[Wardonator]

Hi hoping I can get some help with loft. I have a roofing profile that is 220 cover at the front and 400 cover at the back. I initially imported two autocad sketches at these covers on planes 1500 apart that wouldn't join even with a centreline. So I ended up re drawing the sketches on the two planes and a centre line. I have drawn them so I can alter the covers and the length by changing the rear plane dimension.

This worked for the basic shape except not the ribs in the pan. These go straight and disappear. (taper straight jpeg)(taper convex jpeg).

I also tried putting in a rail from the centre of the rib front and back and on each side to get the tapering shape. But this comes up with a self intersecting message.

I also need to make this taper as convex and concave. (400 convexed jpeg).

I have run out of ideas and hope someone can help. Part attached as taper straight.pdf please change extension back to .ipt as it wouldn't upload as an inventor file. I am using Inventor 2015.

Thanks.

Tyler

[Bunny]

Try mapping the center points of each rib. It worked for me.

Thanks.

[Wardonator]

Thanks mapping has worked.

I haven't done this before and it took a bit of messing around to get it to work as there isn't a lot of help out there about mapping.

Plenty of squares to a circle but nothing intricate.

Thanks for you help with this.