Unbend square tube for lasercutting

[johan bax]

Hello All,

I'm trying to unbend a square tube in creo 2.0.
What did i do:
- scetch a line for the sweep and create a sweep
- switch to sheetmetal using a shell
- cut the tube for bending
when i try to unbend at this point Creo simply crashes.
- i add some corner relief
when i try to unbend at this point the feature works, creo show the unbended tube. but when i finish the unbend feature the troubleshooter tells me Highlighted surfaces cannot be unbent. Recommended actions: Try ripping out the surfaces.
And this is where i get stuck.

View attachment 6709

Can anyone help me with this? I'm new to using sheetmetal with tubes

Regards,

Johan

 

[srieger]

You cannot unbend a tube. Creo Sheetmetal only understands open sheetmetal. The bend properties are also not the same for a tube vs. sheetmetal. You may be able to use Pro/Piping but last I remember it doesn't do anything except round tubing. You may be better off calculating the unbent state and making either a family member or another part. Another option is a Tweek feature but you still need to calculate it and it actually works better to bend vs. unbend.

 

[design-engine]

got to have a small flat edge..... or maybe what you want is a rip. Here is a video showing a sqare tube ripped then flattened. Video is using Creo 1.0 from a few years ago.

https://www.youtube.com/watch?v=2cCowEnnmfo < fast forward to about 2:25