Loft inside a curved object

Loft inside a curved object

Anonymous
Not applicable
2,246 Views
11 Replies
Message 1 of 12

Loft inside a curved object

Anonymous
Not applicable

I'm lofting two profiles together which are portions of the two top faces. When lofted, there is a gap due to the circle form of the object. Is there a way to push the highlighted edge to the curved wall? 

 

loft.jpg

Accepted solutions (1)
2,247 Views
11 Replies
Replies (11)
Message 2 of 12

davebYYPCU
Consultant
Consultant

You will need a pair of rails in the loft command, or

you can edit the profiles to penetrate the ring, or

you may be able to PushPull the face it gives, not sure of that.

 

Might help.....

Message 3 of 12

sanket223.patil
Collaborator
Collaborator

Hey , Actually one profile is bigger than other , as the bigger moves to smaller  there will be a sure a gap . If you need that model to be surely done , I have a working idea . I just did it now .   see the image I have send it . Extude it by side , and then after cut it from upper side , so you get , what you want .  see the step 1 and then 2 , it sure works .

Sanket Patil
Mechanical Engineering
Expert Elite
0 Likes
Message 4 of 12

sanket223.patil
Collaborator
Collaborator

Still need more explaination , I can send a screencast .

 

 

Sanket Patil
Mechanical Engineering
Expert Elite
Message 5 of 12

Anonymous
Not applicable

Yes please. Can you send a screencast?

Message 6 of 12

sanket223.patil
Collaborator
Collaborator

Yes Sure .

Sanket Patil
Mechanical Engineering
Expert Elite
0 Likes
Message 7 of 12

chrisplyler
Mentor
Mentor

 

I think the problem is that the Loft of course begins and ends with round Profiles, but without guidance will take the shortest round from point to point, so you end up with something like this, where the top and bottom are curved, but the edge down between them shortcuts straight between the points:

01.JPG

So instead, you've got to add in a Guide Rail on each side to control how that point-to-point edge gets made. Start a Sketch on your XZ Plane, Project>Intersection your top line and your bottom line, such that you get two purple points, and put a Line between those points to represent your slope. Stop that Sketch. Start another Sketch on the same Plane again, and Project>Project to Surface that slope line onto the inner face of the cylinder wall. Now you should have something like this:

02.JPG

Now you can use those two projected curves as Guide Rails in your Loft, like this:

03.JPG

But honestly, it would be easier just to Extrude a full cylinder shape and then slice it off.

Message 8 of 12

sanket223.patil
Collaborator
Collaborator

https://autode.sk/2mFkXSu

Sanket Patil
Mechanical Engineering
Expert Elite
0 Likes
Message 9 of 12

sanket223.patil
Collaborator
Collaborator
Accepted solution

 

 

 

Sanket Patil
Mechanical Engineering
Expert Elite
Message 10 of 12

TrippyLighting
Consultant
Consultant

Here's another version. This would be even simple if the symmetric option would allow to extrude to object.

I am not sure why it does not.

 

 


EESignature

Message 11 of 12

sanket223.patil
Collaborator
Collaborator

Wow , Yes It's a good Idea . 

Sanket Patil
Mechanical Engineering
Expert Elite
Message 12 of 12

TheCADWhisperer
Consultant
Consultant

Here are a couple of other variations on technique.

The replacement face does not have  to be planar.