Help with doming imported DXF?

Help with doming imported DXF?

markwiggs
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Message 1 of 15

Help with doming imported DXF?

markwiggs
Contributor
Contributor

Hey I am in the process of trying to move over to Fusion 360.. but one thing that has got me and I cant seem to move past is:

I am trying to create a "dome" round over type of extrusion from and imported DXF... When I enter a radius great then about 1.2 I get and error my assumption is due to the large amount of lines in the DXF they are intersecting in some way?

I have achieved this and machined it out on other cad cam software but am stumped.. please help... see attached photos

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Message 2 of 15

TheCADWhisperer
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Consultant

My preference on simple geometry like that is to do it over correctly from scratch using lines and arcs.  I would use the imported geometry only for reference.

 

Can you attach the original dxf file here?

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Message 3 of 15

PhilProcarioJr
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@markwiggs

Do the dome part in blender using the inset tool..it will be a 2 min job as opposed to doing it in Fusion which will take forever.

Just my 2 cents.



Phil Procario Jr.
Owner, Laser & CNC Creations

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Message 4 of 15

markwiggs
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Thanks yes I think your right It will take me no time really to redraw it and I have noticed that my computers struggles to navigate around it at times...
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Message 5 of 15

markwiggs
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Here is the redrawn anchor still working on "doming" this over using the sculpt tool...

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Message 6 of 15

TheCADWhisperer
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Consultant

I don't understand the purpose of the dxf file?

Are you still trying to solve this problem?

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Message 7 of 15

markwiggs
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Hey Yes I am still looking to solve this, The dxf isn't the original you where asking for but as you suggested it was totally impractical to work with as it had hundreds of lines in it and completely bogged down Fusion..  I also tried downloading blendr and looking into that as an option but got completely lost, also im on a mac..

so in my own research I found this:

http://forums.autodesk.com/t5/inventor-general-discussion/extrude-to-dome/td-p/5135642

Which is pretty much what i want to do but I downloaded all the models in the thread and for the life of me I could not see how these where made as there was no design history captured or explanation!!!!

or is it more along these lines:  https://www.youtube.com/watch?v=OphzbTt4rKo

 

This is so simply right? I feel like a complete rookie here!! what am i missing here...

 

Any help would be desperately appreciated...

 

Thanks

 

 

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Message 8 of 15

WHolzwarth
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Here's an attempt with Inventor 2016.

Walter

 

Anchor.jpg

 

Walter Holzwarth

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Message 9 of 15

TrippyLighting
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Consultant

I would probably attempt the with this Surface revolves and lofts.

I would assume tat the model provided in the screenshot by @WHolzwarth was created with solids and then some creative filleting, but I don't like the surfaces that creates on the arms and the pointy area on the bottom.

If no one beats me to it I might make a screencast of sorts. 


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Message 10 of 15

WHolzwarth
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Better than this would be a F360 file or a STEP.

Walter Holzwarth

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Message 11 of 15

TrippyLighting
Consultant
Consultant

So I've tried my luck and here's one ay to do this with a number of revolves and solid lofts.

 

The thing with "doming" a 2D outline is that the 2D outline does not indicate at all what the finished 3D object is going to look like. Assuming that outline can just be "domed" while that can be done if this is created in the sculpt environment is likely going to result in a rather ugly 3D object.

 

A few words on the DXF. None of the things that look like they are tangent actually are, so one either ends up with ugly transitions or a good bit of cleanup work has to be done.

 

Screen Shot 2016-07-09 at 3.02.17 PM.png 

 

 


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Message 12 of 15

WHolzwarth
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That's looking very good, and I must admit, that my workflow was not very straightforward.

But I think, your way of doing is possible in Inventor, too.

 

Walter

 

 

Walter Holzwarth

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Message 13 of 15

TrippyLighting
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He He. Well, mine is not straight forward either. That's why the f3d file has the V9 as part of the name. I had to tinker around with it a few times and backed myself into a corner several times so it was more efficient to start over. Thats what I mean when I say that simply "doming" the part is not going to work.


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Message 14 of 15

davebYYPCU
Consultant
Consultant

Kudos given Trippy, 

will review the file, gather the trick of the trade, big thanks for sharing, and your effort.

 

Appreciate this Forum and its members so much.

Message 15 of 15

markwiggs
Contributor
Contributor
oh wow I am so blown away by this!! thank you so much Trippy for your efforts here.. Im going to go through that file in detail and as daveb said and learn the tricks of the trade... 🙂 its actually also encouraging to hear that someone with your experience didnt find this that straight forward.. ( v9 ) 🙂 its all a learning process for me at the moment.., again thank you...