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Loft to Curved Surface?

17 REPLIES 17
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Message 1 of 18
ljapsey
1843 Views, 17 Replies

Loft to Curved Surface?

Like some other have stated here, I'm loft retarded. What I did here was loft to a tangent work plane, then did a sketch on the top surface and extruded the shape that I want. There has to be a better & easier way. Any suggestions?

Thanks, Larry
System Specs:
Dell Optiplex 745
Pentium D, 3.0 Ghz, 4 GB of Ram
Windows XP Pro SP2
Autodesk Inventor Suite 2009, Service Pack 2
Graphics Card - NVIDIA GeForce 8400 GS
Graphics Driver - 6.14.0011.6947
SpaceTraveler, Driver Verizon 6.5.6
Thanks, Larry
System Specs:
Dell Optiplex 745
Pentium D, 3.0 Ghz, 4 GB of Ram
Windows XP Pro SP2
Autodesk Inventor Suite 2011
Graphics Card - NVIDIA GeForce 8400 GS
Graphics Driver - 6.14.11.9745
SpaceTraveler, Driver Verizon 6.7.13
17 REPLIES 17
Message 2 of 18
jakefowler
in reply to: ljapsey

Hi Larry,

I'm not entirely sure if I have interpreted the picture correctly, but would a face-face fillet acheive your desired result? (see attached image). Perhaps I am seeing the picture wrong, in which case, would it be possible to post your IPT to the discussion thread?

Thanks!
Jake Fowler
QA Engineer
Autodesk Shape Manager


Jake Fowler
Principal Experience Designer
Fusion 360
Autodesk

Message 3 of 18
ljapsey
in reply to: ljapsey

Thanks for the info, but I couldn't get it to work. Here is a quick sample. I was more curious if there was a way to extend the loft to the curved surface, instead of tangent to it. Thanks for you help. Larry
Thanks, Larry
System Specs:
Dell Optiplex 745
Pentium D, 3.0 Ghz, 4 GB of Ram
Windows XP Pro SP2
Autodesk Inventor Suite 2011
Graphics Card - NVIDIA GeForce 8400 GS
Graphics Driver - 6.14.11.9745
SpaceTraveler, Driver Verizon 6.7.13
Message 4 of 18
JDMather
in reply to: ljapsey

Looks like it would be trivially easy with a Split, but without a history tree....

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Message 5 of 18
ljapsey
in reply to: ljapsey

Alright....JD! Here's one with a tree.
Thanks, Larry
System Specs:
Dell Optiplex 745
Pentium D, 3.0 Ghz, 4 GB of Ram
Windows XP Pro SP2
Autodesk Inventor Suite 2011
Graphics Card - NVIDIA GeForce 8400 GS
Graphics Driver - 6.14.11.9745
SpaceTraveler, Driver Verizon 6.7.13
Message 6 of 18
JDMather
in reply to: ljapsey

Don't see how those are supposed to be the same problem, but maybe something like this is what you are after?

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Message 7 of 18
ljapsey
in reply to: ljapsey

JD,

I do have two problems, well 3 now...:)

- Is there a way or a better way to loft to a curved surface?
- Which led to the creation of a face fillet, that I couldn't get to work
- By trying the split option, it wouldn't extend
- As stated, I created a sketch on the top surface and extruded the shape, worked..but looking for better/correct way.
- Don't have 2010 installed yet


Thanks, Larry
System Specs:
Dell Optiplex 745
Pentium D, 3.0 Ghz, 4 GB of Ram
Windows XP Pro SP2
Autodesk Inventor Suite 2009, Service Pack 2
Graphics Card - NVIDIA GeForce 8400 GS
Graphics Driver - 6.14.0011.6947
SpaceTraveler, Driver Verizon 6.5.6
Thanks, Larry
System Specs:
Dell Optiplex 745
Pentium D, 3.0 Ghz, 4 GB of Ram
Windows XP Pro SP2
Autodesk Inventor Suite 2011
Graphics Card - NVIDIA GeForce 8400 GS
Graphics Driver - 6.14.11.9745
SpaceTraveler, Driver Verizon 6.7.13
Message 8 of 18
ljapsey
in reply to: ljapsey

Well...after some more playing around. I still couldn't get the result that I wanted, by doing it a different way. I could get the face fillet to work, but only if the loft was linear. In my example, the loft is angled to the circular face and it fails every time.
Larry
Thanks, Larry
System Specs:
Dell Optiplex 745
Pentium D, 3.0 Ghz, 4 GB of Ram
Windows XP Pro SP2
Autodesk Inventor Suite 2011
Graphics Card - NVIDIA GeForce 8400 GS
Graphics Driver - 6.14.11.9745
SpaceTraveler, Driver Verizon 6.7.13
Message 9 of 18
JDMather
in reply to: ljapsey

I don't have 2009, but I could probably walk you through the process once I figure out what you are after. Check the attached step file.

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Message 10 of 18
ljapsey
in reply to: ljapsey

JD,
Thanks, that is exactly what I'm after...just getting the loft to connect to the cylindrical surface, like in your step file. When I try it, this is what I get. I know I just need to learn the proper steps. I'm pushing for the 2010 upgrade, but I can't load it...until I'm told it's ok!
Thanks, Larry
System Specs:
Dell Optiplex 745
Pentium D, 3.0 Ghz, 4 GB of Ram
Windows XP Pro SP2
Autodesk Inventor Suite 2011
Graphics Card - NVIDIA GeForce 8400 GS
Graphics Driver - 6.14.11.9745
SpaceTraveler, Driver Verizon 6.7.13
Message 11 of 18
JDMather
in reply to: ljapsey

>this is what I get

What happened to the box?
What happened to the feature tree?
Is this the file you intended to attach?

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Message 12 of 18
ljapsey
in reply to: ljapsey

JD,

Sorry about the mix up....I did pick the wrong file!
Thanks, Larry
System Specs:
Dell Optiplex 745
Pentium D, 3.0 Ghz, 4 GB of Ram
Windows XP Pro SP2
Autodesk Inventor Suite 2011
Graphics Card - NVIDIA GeForce 8400 GS
Graphics Driver - 6.14.11.9745
SpaceTraveler, Driver Verizon 6.7.13
Message 13 of 18
JDMather
in reply to: ljapsey

Delete the Split (don't know what you were trying to do with that?)

Delete the Loft (but not the sketches).

Edit Sketch5 and change the projected geometry to construction type and close up the top and bottom as in attached.

Split and use the rectangle sketch in Sketch5 to split the cylindrical surface.

Loft from Sketch3 to the split face of the cylinder.


Oh, and change the projected edges in Sketch3 to construction as well. In fact, they aren't even needed.
Don't tell me you have Autoproject on Sketch Create turned on? You might want to read this document http://home.pct.edu/~jmather/AU2007/MA105-1L%20Mather.pdf

Edited by: JDMather on Nov 11, 2009 11:24 AM

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Message 14 of 18
ljapsey
in reply to: ljapsey

JD,

Thank You!

No, I don't have the autoproject on. I also have read the document. The part I was missing was...spliting the surface by the box, I understand why now. I've never had to use either 'split' nor 'loft' in over 3 yrs of working with Inventor. Sad, yes...but true. I'm still learning everyday. Thanks for you help!

Larry
Thanks, Larry
System Specs:
Dell Optiplex 745
Pentium D, 3.0 Ghz, 4 GB of Ram
Windows XP Pro SP2
Autodesk Inventor Suite 2011
Graphics Card - NVIDIA GeForce 8400 GS
Graphics Driver - 6.14.11.9745
SpaceTraveler, Driver Verizon 6.7.13
Message 15 of 18
JDMather
in reply to: ljapsey

>No, I don't have the autoproject on. I also have read the document.

I would have constrained to the origin - not the sides of the previous extrusion feature. More robust technique if you have to go back and change things. (Particularly since you used a midpoint of projected geometry - that's living dangerously.)

How are you going to manufacture that geometry?

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Message 16 of 18
ljapsey
in reply to: ljapsey

JD,

This is in the concept design stage. If all goes correctly or if it's approved. A casting/mold will be created. That is awhile down the road though. Thanks again!


Larry
Thanks, Larry
System Specs:
Dell Optiplex 745
Pentium D, 3.0 Ghz, 4 GB of Ram
Windows XP Pro SP2
Autodesk Inventor Suite 2011
Graphics Card - NVIDIA GeForce 8400 GS
Graphics Driver - 6.14.11.9745
SpaceTraveler, Driver Verizon 6.7.13
Message 17 of 18
tvernonbaker
in reply to: JDMather

First, thank you. Your answer above was helpful.

 

I have a similar problem, except that I'd like to create a single loft to tangent curved surfaceS! Can you please help me?

 

I have two tangent, curved, surfaces (two tangent cylinders of different radii). Inventor shows a line where the curves intersect and treats the surfaces on either side of that line created by the split (following the steps you layed out above) as seperate surfaces. I can only select a single surface for the loft, when I would like to basically merge those surfaces.

 

Please see the attached part file. This is just an example for the sake of simplicity and doesn't follow any good design conventions, but it illustrates my problem. 

Message 18 of 18
JDMather
in reply to: tvernonbaker

One example.


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