Inventor General Discussion

Inventor General Discussion

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johnnymcmaster1833
Posts: 4
Registered: ‎11-13-2013
Message 1 of 8 (411 Views)
Accepted Solution

Sheet metal Flat Layout Ellipses

411 Views, 7 Replies
11-13-2013 10:05 AM

Hey,

I have an issue with flat layouts, when a draw a round object such as a rolled punched plate it would be nice to have the flat layout show what the hole callout and spacing would be, however with the way i draw the model. the holes come out as an ellipse, attached is a document showing how i drew the model. Any help is appreciated, Thanks.

Here is one method.

As noted - cannot be round in both the flat pattern and the folded.

You will need to determine which condition is most important to you - then best solution can be proposed.

I tried your models and it worked well. I also do alot of cylinders out of punched plate, and after playing around with the unfold and refold commands, it seemed like that worked best for my needs so you can draw the shapes/patterns you want in the flat.

*Expert Elite*
JDMather
Posts: 26,907
Registered: ‎04-20-2006
Message 2 of 8 (405 Views)

Re: Sheet metal Flat Layout Ellipses

11-13-2013 10:10 AM in reply to: johnnymcmaster1833

You have modeled the part incorrectly.

 

If you manufactured it the same way you modeled it - the results would be the same as what you posted.

 

I'll be back in a minute with a correct solution.

Please mark this response as "Accept as Solution" if it answers your question.
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mcgyvr
Posts: 6,944
Registered: ‎12-01-2004
Message 3 of 8 (402 Views)

Re: Sheet metal Flat Layout Ellipses

11-13-2013 10:13 AM in reply to: johnnymcmaster1833

What are you expecting the flat pattern to look like?

Obviously a perfectly round circle punched in the flat pattern is not going to be a circle after roll forming and a circle drilled though when formed is not going to be a circle anymore after unfolded..

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JDMather
Posts: 26,907
Registered: ‎04-20-2006
Message 4 of 8 (395 Views)

Re: Sheet metal Flat Layout Ellipses

11-13-2013 10:18 AM in reply to: JDMather

Here is one method.

As noted - cannot be round in both the flat pattern and the folded.

You will need to determine which condition is most important to you - then best solution can be proposed.

Please mark this response as "Accept as Solution" if it answers your question.
-----------------------------------------------------------------------------------------
Autodesk Inventor 2014 Certified Professional
Autodesk AutoCAD 2013 Certified Professional
Certified SolidWorks Professional
Inventor Professional 2015 64-bit
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Member
johnnymcmaster1833
Posts: 4
Registered: ‎11-13-2013
Message 5 of 8 (379 Views)

Re: Sheet metal Flat Layout Ellipses

11-13-2013 10:58 AM in reply to: JDMather

Ok will check out your models, as i stated in my original post i want the holes to be in the flat, since that is how they will be manufactured, i am not able to draw on the model in the flat layout (at least it wont save it), i will look at your models to see if you came up to an awnser to my question, thanks.

*Expert Elite*
JDMather
Posts: 26,907
Registered: ‎04-20-2006
Message 6 of 8 (356 Views)

Re: Sheet metal Flat Layout Ellipses

11-13-2013 11:52 AM in reply to: johnnymcmaster1833

I will have to post one additional technique.

Please mark this response as "Accept as Solution" if it answers your question.
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Valued Mentor
graemev
Posts: 301
Registered: ‎11-03-2011
Message 7 of 8 (348 Views)

Re: Sheet metal Flat Layout Ellipses

11-13-2013 12:00 PM in reply to: JDMather

"... with the way i draw the model. the holes come out as an ellipse..."

 

That's because the way you modelled it, the holes ARE an ellipse when the sheet is flattened.  Perhaps you wanted to punch a flat sheet with a round punch and then roll (bend) it?  Alternately, make a leader text note?

Member
johnnymcmaster1833
Posts: 4
Registered: ‎11-13-2013
Message 8 of 8 (349 Views)

Re: Sheet metal Flat Layout Ellipses

11-13-2013 12:23 PM in reply to: johnnymcmaster1833

I tried your models and it worked well. I also do alot of cylinders out of punched plate, and after playing around with the unfold and refold commands, it seemed like that worked best for my needs so you can draw the shapes/patterns you want in the flat.

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