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pshepherdson12-Amethyst
12-Amethyst
October 29, 2014
Question

sheet metal mitered corner

  • October 29, 2014
  • 2 replies
  • 10811 views

Hi All,

I know I'm missing something. What is the best way to get these flages to be a nice meeting (say a 0.010" gap) mitered corner?

I've adde a flat, trapezoid to one flange, then the same to the other. But I'm left with a gap I cannot really modify. Can't extend any edges (the 'extend' command is usually always greyed out..)

I've startted the part as a solid, then conversion to S/M, then shelled, then added the bends & rips as required. I'm tryign to add these extra flanges (flats). Should I have created this feature in the solid before the conversion? (making an indent in the face of the solid, then adding the rip lines when converting, to get my mitered corner?)

Should I make regular rectangular flats , then unbend, then remove the corners, then do a bend back?

I guess I'm expecting something rather easy, some hidden 'miter corner flange command!


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2 replies

G
gšvigelj1-Visitor
1-Visitor
October 30, 2014

For this part I would use "double shell" method. First shell is made in solid part, second shell is for conversion to sheet metal. First shell thickness defines flange size. Conversion feature is used for edge rips and rip connects.

When creating flat wall you have at corner of the bend line a white box which can be used for extending and shortening.

Extend feature is a bit strange, to use it you must first change selection filter (on the lower right corner of main window) from Smart to Geometry. Then you select the edge you want to extend and the feature is available.

box.png

M
magnus.salomons15-Moonstone
15-Moonstone
October 30, 2014

I prefer using the Flange Wall feature in Sheetmetal as this can be used with a Surface Loop.

Create a Planar bottom. Select one edge then while pressing Shift key click on bottom surface to select Surface Loop.

Shtmtl+Flange+Surface+Loop.jpg

In Flange command select User Defined from drop down list and Sketch as below.

Shtmtl+Flange+User+Defined+Sketch.jpg

You gan adjust edge corner gap as in pic under Edge Treatment. Select all edges using Shift key before changing. If you select Blind there will be no gap.

Shtmtl+Flange+Edge+Treatment.jpg

Shtmtl+Flange+Edge+Treatment+with+Gap.jpg

P
pshepherdson12-AmethystAuthor
12-Amethyst
October 30, 2014

Thanks Magnus,

Am just tryign this, but I've noticed that Creo craps out when the angles aren't 90°. In my particular case, this methods works until the 3rd edge. it's not 90° to its neighbor, more like 150°.. It looks like the bend radii run into each other & don't play nice..

So, back to solid, shell, conversion, and then add my flanges & miters by hand.. that works. this, no.

M
magnus.salomons15-Moonstone
15-Moonstone
October 31, 2014

Not sure what you mean with "craps out". To me it seems that the differences are pretty minor but it just might be my view. Here's a comparison between the two options. Grey model is Shell Conversion and Red model is Flange Wall.

Shtmtl+Flange+Edge+Treatment+distorsion.jpg

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