I am trying to loft 3 profiles with 2 rails. For whatever reason I get these weird S shaped surfaces between the lofted profiles. I have no idea how to fix, and have tried multiple workarounds.

I tried switching which edges and lines were rails and which were sections. I tried not using any edges and used 3D sketches, same result every time. Any suggestions?

It depends a little on what the shape should look like. Look autodesk inventor 2017 loft free the screencast, if you give the guidelines a tangent condition the loft will no longer have the S shape you are talking about but I’m guessing this is not the shape you’re after.

If you want more control of the loft then create more sections or rails to guide it. Walter Holzwarth Dipl. I guess my bigger question is why, when lofting 3 simple profiles with 2 rails does the resulting geometry autodesk inventor 2017 loft free such a complicated mess? What is it about the bottom rail that causes the need for so much effort on a work around? Autodesk inventor 2017 loft free bigger question is why is the geometry so distorted with a simple loft of 3 profiles and 2 rails?

Why is a work around even necessary? What is it about the bottom rail that causes such distortion in the geometry? The bottom rail autodesk inventor 2017 loft free used for position but in autodesk inventor 2017 loft free areas the resulted surface acts as if it flips from a position relationship to a страница one.

I would just like to know why. So going through every feature again, I made a symmetrical sketch with splines and then mirrored the resultant spline. The image below shows that the sketch is not autodesk inventor 2017 loft free. What is causing this? Is this a bug? I took a look at the sketch in inventor, I have everything aligned, the 18mm are vertically identical on my end. The original spline is not mirrored. The spline was created and then the cv’s were constrained so they are symmetrical around an axis.

I noticed a few inconstancy later on going through the part, and then mirrored the sketch on itself to see if it was perfectly symmetrical. It isn’t. This seems to be a bug in inventor with spline creation.

The CV’s of the both splines are aligned, the resultant curve is not. If I use your method of points, and using the exact same points as the original spline, I again get a completely different curve as shown below.

I will have this checked out. I am sorry for the inconvenience. Hi marcusfriesl. The development team has checked this file, and find the orignal CV spline is not symmetric though the CV point is symmetric, showing as the snapshot below. The blue one is original and magenta one is mirrored one from the blue, but they are not matched completely. So Autodesk inventor 2017 loft free think the orignal spline is not symmetric or as expected.

We re-create the spline again in Inventor with the existed CV points and the spline is symmetrics and as expected, so we do not think it is a bug in current Inventor. For the reason why the new spline autodesk inventor 2017 loft free different from the original, we need to know which Inventor build is used to created the orignal spline. We читать больше find it was last saved in Inventor One of Internal build but can not find which build is used to create it.

Inventor Forum. Share your knowledge, ask questions, and explore popular Inventor topics. Activer les suggestions. Vouliez-vous dire :. Il ne s’agit pas d’une traduction officielle et le texte peut contenir des erreurs et des traductions inexactes. Message 1 sur Inventor – loft problem. I have attached an image as well as the file.

Any help would be greatly appreciated. TB control. Balises 2. Balises: autodesk inventor 2017 loft free Message 2 sur Frank-Oosterwaa l. Hi, It depends a little on what the shape should look like.

Hope this is what you’re after, good luck! Message 3 ссылка How about a boundary patch? TB control-WH. Message 4 sur Perhaps this one is looking better. TB control V2-WH. Message 5 sur Thank you all for the autodesk inventor 2017 loft free that you put in finding a solution. Message 6 sur Thank you very much to everyone for working through a solution.

Thanks again. Message 7 sur Message 8 sur I think so. The vertices at both ends of 18 mm dimension are vertically different. Message 9 sur Message 10 sur I never mirror a spline. Instead I mirror points and then create the spline across the points.

I saw a autodesk inventor 2017 loft free of other things that I would do differently as well. Message 11 sur But that’s where the mystery is starting. Message 12 sur Hi JD, The original spline is not mirrored. What is going on here? Message 13 sur Xanthopou lou. Hi, I will have this checked out Regards.

Message 14 sur Hi guys, we obviously ran into something here This incident is currently being investigated for a possible cause and resolution. I will update this thread, as soon as I have further information. I am sorry for the inconvenience Regards. Message 15 sur Hi Sofia, Any updates? Message 16 sur Hi marcusfrieslthis is still under investigation. But one of our Software engineers will update this case soon. Hang on Message 17 sur Hi marcusfrieslThe development team has checked this file, and find the orignal CV spline is not symmetric though the CV point is symmetric, showing as the snapshot below.

Message 18 sur autodesk inventor 2017 loft free Hi marcusfrieslplease report back to the last post, so investigations can be continued. Thank you.

Message 19 sur Message 20 sur

     

Autodesk inventor 2017 loft free

  Solution: Create s Surface loft that will connect the two as if there were walls being built. 2. Once created it will show in the Browser. Output Select whether the loft feature will be a solid or a surface. Free Condition (top button): With this option, there is no boundary condition. Work from a sketch that represents cross-sections of the loft feature and contains sketch sections on separate planes.    

Surface Loft to FreeForm surface. How to create solid | Inventor | Autodesk Knowledge Network

   

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