How do I construct/model a rolled plate in Onshape.

Colm_Rev

brucebartlett

No way to flatten this yet. It has been requested many times to be included as part of sheet metal. This is a common requirement and needs to be included. I'd also like to see some form of surface/freeform flattering as well.

I did notice @john_mcclary had done some flattering with using the measure Feature Script to build a new flat sketch. There may even be a flattering Feature Script if someone can lead us in the right direction. 

john_mcclary

I used the featurescript Measure Distance Extended https://cad.onshape.com/documents/77baa8153589a7fc5f289829/w/cffd0f2a7077380d5378a885/e/d3174bf5315e6aafcb889367

Which lets you make a measurement and then stores it in a variable:


From there I made a sketch "using" as much information from existing sketches. And as many constraints as possible.



Then I used the MD feature to set the length of the part
and also to set the spacing of the slots.


The result ls close enough for my needs. But doesn't account for metal stretching or anything. But that's why I use 2" slots when I roll form
Hope this helps

hobie_smith

Hello,
can you maybe make a video of the individual steps?

I can not do this.

Greetings Hobie

konstantin_shiriazdanov

@hobie_smith resently rolled sheet metal functionality was introdused, so you can directly obtain a flat pattern, if your part was made as sheet metal

john_mcclary

@hobie_smith I made a mock up of how to do both the new way using sheet-metal (See Blue part) and the older way which was manually flattening (see yellow part)

I didn't add any holes to the side wall, but you can copy this and play around with it. Just roll back to the beginning and you can see how I do this step by step.

If you still want a video, I'll be happy to do one, but it may be a few days away before I can get to that.

let me know!

Edit: Helps if I include a link to the document...  
https://cad.onshape.com/documents/28050bca2b1ddeb0acbab720/w/72369ffa7faabbf84de28ab1/e/eb89dcc51a42945fad1bb5b1

hobie_smith

Great thank you. I will work through the steps and test them.

Thumbs up for the quick answers.

For Gramatik errors is the Google translator's fault

MBartlett21

@hobie_smith

When you create a Sheet Metal Model, choose "Thicken" at the top, then choose the face of the import that you want to use.

lance_robinson

I am able to do a can, but not a cone. Any workaround?

john_mcclary

cone does note appear to be supported yet

I was about to add a improvement request for lofted sheet-metal, cone is pretty much the same command anyways

Vote for it here:
https://forum.onshape.com/discussion/9297/loft-sheet-metal/p1?new=1