Ribs at an angle, on curved surface

[kenneth_paulsen]

I am trying to add ribs to these curved surfaces (solid). I want to make the ribs 5 mm tall and follow the curves in the model, however I can only get Inventor to make ribs start at the sketch plane. How would I go about achieving ribs that will follow the surface and only extend 5 mm out in X direction?  
Making the ribs at a 45 degree angle relative to the model Z is required. 

[NigelHay]

Not entirely sure what you want here but I've attached my suggestion (Inv2024).

[kenneth_paulsen]

Yes, sorry about my unclear question. 

Using a sweep as you suggested might be sufficient in my case. 

Here I used a 2D-sketch and projected it to the surface. Then made a plane normal at the end point and drew my rib shape, before sweeping along the projected path. Thanks for the tip @NigelHay! 

[johnsonshiue]

Hi! By using Surface Modeling techniques, this model can be done much more easily. Please take a look at the attached file.

Many thanks!

[kenneth_paulsen]

Hi @johnsonshiue, 

I see what you did, however the ribs are now not 5 mm tall along their entire length. The height of the rib relative to the base surface is higher the further towards Y and Z you get in this picture. 

[kacper.suchomski]

Offset surface & Trim / Splitt.

[Joe_CAD · Accepted solution]

Hi, 

I used a different procedure and so I figured I'd share it.

See attached Inv2024 file. 

The rib pattern is driven by d44 and d53 in sketch 2.

[kenneth_paulsen]

This seems like a good solution @Joe_CAD !