AnsweredAssumed Answered

Sheet Metal Unfold/Fold Bug

Question asked by Iain Hendry on Apr 7, 2015
Latest reply on Apr 7, 2015 by Ingvar Magnusson

SolidWorks 2015, SP 2.1

 

Background:  Making a bent Lexan guard for a machine.

 

Workflow:  Make Lexan panel as sheet metal (since it has a bend in it).  Unfold, make clearance cutouts for other equipment, Fold.  Here's what it should look like:

 

Correct Part.JPG

 

Bug:  Pushing Rebuild (Ctrl-Q) causes the Unfold to fail.  If I go edit the properties of the Fold (and the Unfold), it's lost the Bend:

 

Failed Part.JPG

 

 

I changed the K Factor at some point although I'm not sure if that has anything to with this.

 

Every time I push Ctrl-Q, this number increments by 1:

33.JPG34.JPG35.JPG

 

...So I assume the ID of the bend is being lost for whatever reason on a rebuild, which causes the Unfold and Fold to "forget" what the bend is.  Why would the bend increment like this?

 

You can simulate this for yourself by rolling back as I have done above and push Ctrl-Q.  You will see this number climb skyward.

 

(I prefer to model this way (Sheet Metal > Unfold > Make Cuts and Holes > Fold) because then the Hole Wizard correctly calls out the right number of holes in the flat pattern.  Also makes cuts that go across the bend line much simpler/more robust)

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