1-Visitor

Question

Formed Sheetmetal Corner (Rounded Solid)

Forum|Forum|9 years ago
July 8, 2016
5 replies
5319 views

I did this years ago in Wildfire and sheetmetal did not know how to flatten it, but it was good enough. The part was originally a solid model (shown below) and am attempting to create filled corners in sheetmetal because the part is made that way. See the pic below for solid model corner.

Solid Part Corner.JPG Solid Part Corner Dwg.JPG

I have tried various ways in sheetmetal to fill the corner in and currently only a sweep fills in the corner, but only as a surface. When choosing Solid (sweep as wall) sheetmetal is incapable of creating the geometry. I am going to continue trying, but hoping someone has figured out how to do this?

Sheetmetal Corner.JPG Sheetmetal Corner as Solid.JPG

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General

P

Pieface

Author

1-Visitor

I went to Failed Geom and the following displays so I think I have a clue?

Sheetmetal Corner Failed Geom.JPG

S

StephenW

23-Emerald III

This is something Creo sheetmetal can't handle. Creo sheetmetal only does straight, non-intersecting bends when it comes to bending and unbending.

The math for those bends is straightforward.

Once you get to intersecting bends, you get deformation that is not simple math. You would then need tooling (forms and dies) that gives you the desired shape.

T

TomD.inPDX

17-Peridot

Creo doesn't do corners well. And if you try to fix them, it doesn't do fold/unfold well.

So you have to pick your poison. Do you want good geometry or do you need flat pattern capabilities.

Otherwise, you can always convert your part back to solid model and work with it at your content.

I only need flat pattern from time to time.

D

Darek

1-Visitor

please, see attached file for some idea.

Check deformation control tab in unbend feature

Creo 3.0 commercial

1_prt0002-prt-5.zip

P

Pieface

Author

1-Visitor

Thanks everyone for replying. Thank you Darek for the model. Funny to see how it treated the two right side corners. I am where I am and still am going to attempt to solidify the corners and hope it will flatten

Yes Antonius I do need the flat pattern, not only the flat pattern but they want the stages of the processed part. That is being done with bends/unbends using a family table.

S

StephenW

23-Emerald III

We had a similar discussion not too long ago. Re: Creo Sheetmetal - Joggle Tangent Lines

There is a nice video of making a part very similar in one of the responses.

With regular press brakes, you really can't get to that part. The straight bends are easy and can be fully calculated by creo (if you have the right k or y values) but the deformed corners are gonna get you. It's a much more involved process than what creo can calculate. There is wrinkling and stretching and thining that creo can account for in the math.