Best way to connect parts smoothly

msohaibPLAF8
Contributor

Best way to connect parts smoothly

msohaibPLAF8
Contributor
Contributor

How can I create a seamless transition between these two parts shown in the image? Any advice on the best approach for achieving this would be greatly appreciated!

Part design.PNG

Thanks!

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Alexander_Chernikov
Mentor
Mentor

Are these two different parts or one part?

It is advisable to attach a part/assembly file and a sketch of what kind of transition you need to obtain.

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ampster40
Advisor
Advisor

with nothing else to go from, Insert constraint with an offset.

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johnsonshiue
Community Manager
Community Manager

Hi! I believe you will need to use Loft command to create the transitional geometry.

Many thanks!



Johnson Shiue (johnson.shiue@autodesk.com)
Software Test Engineer
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msohaibPLAF8
Contributor
Contributor

Thanks for your quick assistance. It's supposed to be one part with a smooth transition.

Specifically, I want to connect the diameter of the smaller tube to the bigger diameter of the other side. I intended to 3d print this adapter to connect air tubes of different diameter. 

 

I have attached a sketch, giving a rough idea of how the transition would like from a side view. 

part design 1.PNG

 

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msohaibPLAF8
Contributor
Contributor

Thanks for your help.

However, loft command gives a cone like connection. And it would be suitable to have a more curved connection as in the screenshot below.

part design 1.PNG

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dave.cutting
Advocate
Advocate

You could use the revolve command to utilise the profiles that you sketched.

Dave Cutting

andrewiv
Advisor
Advisor
Accepted solution

You can still use loft, but you will have to change the condition of your edges.  In the picture I changed Edges1 to a smooth (G2) condition.  You could also use tangent.

andrewiv_0-1713963424334.png

 

Andrew In’t Veld
Designer / CAD Administrator

Logos_Atum
Advisor
Advisor

Hi, 

I just had the time to have a quick look. That can easily be achieved using the loft command for sure:

 

Screenshot 2024-04-24 145244.png
Start with the sideway sketch you supplied. Make sure the height of the connecting sides equal the diameter of the flanges you need to connect. Add two more sketches onto two planes sectioning your sideway sketch. Use the "loft" command and connect the two circles. Then add the curves of your plain side view as sketch rails. You can vary the rails quite a bit. Make sure you´re not selecting a closed sketch, but the two curves that are to join the diameters. If you need more rails, you can add them along on additional planes that you can offset by a few degrees each for example and you´ll get a less "round" result in a way.

Screenshot 2024-04-24 145607.png

 I hope this helps.

 

 

 

 

 

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msohaibPLAF8
Contributor
Contributor

Thanks!

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SBix26
Consultant
Consultant

The sections are circular so Revolve is a simple and very robust solution.  Loft faces are not nearly as precise or well-controlled as Revolve faces would be. 


Sam B

Inventor Pro 2025 | Windows 11 Home 23H2
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