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unbend a designed part model & convert to sheetmetal


unbend a designed part model & convert to sheetmetal



I need some steps for unbend a part model and create flattpattern for this.

i try to reconstruct radius but i'dont know if is the right way to unbend because the part dont convert to sheetmetal

How can i identify radius without same thiskness features of the part ?


Please some advices 


Thank you for support


The 3D model you posted is a STEP file, Creo is not going to create a flat pattern of this in sheet metal mode. I would use the step file as a template in part mode to create a sketch of the bent profile extruded to the part blank width and then thicken that to a constant thickness. You can then convert this part to sheet metal and add all of the cutouts again using the step as a reference. You need to insure that you do not create references to any step model geometry so that your part will regenerate when you delete the step import feature from your native Creo model.

Actually, if the STEP geometry of uniform thickness, then it should be possible to switch to sheetmetal mode, establish the driving surface and then use the conversion feature to reconstruct the bends, rips and reliefs, and then also the flat-pattern:






This conversion is possible, though I needed to do some preparation before the sheetmetal conversion.

Namely, there are 3 places where the wall thickness needs to be restored to the uniform thickness:


I've done this by deleting the chamfer faces with the remove tool:



Depending on your needs, you can also remove the rounded bend surfaces from the geometry and then redefine them during the conversion.  This is not necessary for flat-pattern to be developed, but is handy if you want to change the bend radius:



I was not aware that Creo would flatten an import feature. I am thinking this was an enhancement in some release that I missed. There are enhancements mentioned in the Creo 5 release notes specifically mentioning legacy CAD data. Definitely enhanced from Pro/E release 12....