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A
AIRMAN_DILLARD12-Amethyst
12-Amethyst
March 29, 2024
Question

CREO 10 SWEPT BLEND ON A CURVED SURFACE

  • March 29, 2024
  • 3 replies
  • 6510 views

CREO 10

 

CAN YOU COMPLETE A SWEPT BLEND (OR ANOTHER WAY IF THIS IS NOT THE CORRECT FEATURE) FROM A PLANER SKETCH TO A CURVED SKETCH, OR PROJECTED SKETCH ON A CURVED SURFACE?

 

HIGHLIGHTED IS THE PROJECTED SKETCH ON THE LARGE BODY, THE CURSER (SMALL RED LINE) IS THE OUTSIDE SKETCH OF THE DUCT.  FOR THE DUCT, I MADE THE BODY WITH A SWEPT BLEND.  HOWEVER, I NEED TO ADD AN OUTSIDE THICKNESS LAYER WHICH WILL STOP AND CONFORM TO THE OUTTER SURFACE PROFILE OF THE LARGE BODY.  SO BASICALLY, I NEED TO CREATE A LOCATION STOP/SUPPORT FOR THE DUCT (THIS IS REASON I NEED TO ADD EXTERIOR THICKNESS TO THE DUCT), THIS WILL ALLOW ME TO PRINT THIS SEPERATE (IN A DIFFERENT COLOR) AND ASSEMBLE IT TO THE LARGE BODY.  IT IS CRUCIAL FOR ITS LOCATION AFTER ASSEMBLY.

 

I CANNOT PERFORM ANOTHER SWEPT BLEND FOR THE EXTERIOR TO CREATE THE THICKNESS BECAUSE THE SWEEP WILL NOT STOP AT THE CURVED SURFACE.  WHAT ELSE CAN I TRY??

 

ANY HELP IS APPRECIATED.

3 replies

tbraxton
22-Sapphire II
tbraxton22-Sapphire II
22-Sapphire II
March 29, 2024

Are you able to offset the swept surface to the desired thickness? If so then you can offset the swept blend and then trim/merge the proximal and distal ends with surfaces to get a closed quilt that in theory would solidify. Basically, overbuild the geometry with surfaces and trim/merge to get the desired result.

 

You could also get this done with multibody solids and Boolean operations.

 

As with most geometry in Creo there are multiple solutions. Design intent should be a consideration in addition to accurate geometry.

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AIRMAN_DILLARD12-AmethystAuthor
12-Amethyst
March 29, 2024

HERE'S ANOTHER PICTURE, THE DUCT GOES THROUGH THE BODY A SHORT DISTANCE TO THE INSIDE, THIS NEEDS TO STAY AT THE OUTER DIMENSION TO FIT THROUGH THE OPENING.  WHAT I NEED IS TO THICKEN THE DUCT ON THE OUTSIDE OF THE LARGE BODY.  I NEED THE INCREASED THICKNESS OF THE DUCT TO STOP AT THE CURVED SURFACE OF THE ABUTMENT JOINT AT THE LARGE BODY.  I'VE TRIED RE-SWEEPING THE PROFILE AS A SURFACE AND THEN TRIMMING AND THICKENING BUT I JUST CAN'T GET TO WORK.

tbraxton
22-Sapphire II
tbraxton22-Sapphire II
22-Sapphire II
March 29, 2024

With this extension inside the large body, it would not change my suggestion above. As you build this geometry using surface modeling you should check that it can thicken to the required amount without failure. If you build it with solid geometry, then you could shell it to the required thickness while removing the proximal and distal face surfaces. The corner radii appear to be the limiting factor in terms of achieving the thickness offset. Without access to the geometry, I am speculating. I do not have Creo 10 installed, only up to 9 at the moment.

 

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    achirila5-Regular Member
    5-Regular Member
    April 3, 2024
    Hi @AIRMAN_DILLARD 
    It looks like you have some responses from some community members. If any of these replies helped you solve your question please mark the appropriate reply as the Accepted Solution. 
    Of course, if you have more to share on your issue, please let the Community know so other community members can continue to help you.
    tbraxton
    22-Sapphire II
    tbraxton22-Sapphire II
    22-Sapphire II
    April 4, 2024

    If I interpret the pictures correctly, then this is what you are targeting. I have enclosed a Creo 9 model using surface modeling and multibody get this geometry as seen below. This is to demonstrate a modeling approach that is feasible.

     

    tbraxton_0-1712248517128.png

    tbraxton_1-1712248570205.png

     

     

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    AIRMAN_DILLARD12-AmethystAuthor
    12-Amethyst
    April 16, 2024

    tbraxton,

     

    thank you for the sample model.  i could not get the sweep i started with to work, so i attempted your sample which is better.  however, i cannot get passed the solidify step.  what is the mkr2??  i do not know what you did at this point.  when i get to the shell feature, i can select sweep 1, but i cannot select offset 2.

     

    i also don't know what you used the other 2 lines for, if those are relevant.

     

    i'd appreciate your help again.

    A
    AIRMAN_DILLARD12-AmethystAuthor
    12-Amethyst
    April 17, 2024

    Again, thank you for your time and help.  For whatever reason, I just can't get this to work.  I get all the way to the last step "solidify" and it won't regenerate (I can't get it to remove the material from the "surface" that was generated for the sweep from the opening, flip the arrow and it will remove the outer perimeter surface but not from the opening).  I've double checked every option and step in your sample.  I will give it one more attempt.  I don't want to burn out my welcome, but if I can't get it, are you open to review my file?

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