Sheet Metal Problem

[sbriar1]

solidworks 2008
This is a combustion chamber for a model jet engine.
I am drawing the outer tube for this assembly.
I can flatten the part and get the basic holes in the part, I then used the form tools (when flattened) to get the holes and vents that need formed.
The problem is when I bend it back solidworks says it only supports simple holes when bending back. (something like that)
Any ideas?
Solidworks also says the form tools do not work on cylinders only flats.
Is it possible to draw this in solidworks and still view it in the flat state.

Thanks,
Steve

 

[CorBlimeyLimey]

You will have to 'cheat' and use configs to show the "formed in flat" and "formed in round" conditions. The "formed in round" version will have to be created using normal (non-sheet metal) feature/surface techniques.

 

[sbriar1]

will I do this in the flat state or in the bended state, when I do this will it show the formed holes in the flat state?
I am kind of puzzled why solidworks does not support the form tools in the flat state, when I am building this part in the real word (in the shop) I need to use form tools when it is flat and then bend it to a cylinder.
Is there any way you can send me a sample of how you would do this.
I tried attaching my file but it is to big.
Thanks,
Steve

 

[sbriar1]

the more I think about it I understand what you mean, I can use the form tool in the flat state just so I can get a drawing

 

[TheTick]

What SW sheet metal does not capture is the deformation that happens around bends and holes that go across bends.

 

[sbriar1]

so are we saying that solidworks can not make this part.
this is a first for me, I have been able to model any thing in solidworks, I thought it had no limitations until now.

 

[steinmini]

There are other limitations as well, I found some. In such cases, there is no other solution but to "cheat".
SW is a hi-tech software and in most cases to produce a part designed in SW one needs hi-tech machining. To overcome the lacking ways/features, you'll simply have to cheat and make multiple configurations/parts/files. The funny part is that a skilled worker can make such a final piece with a few simple hand tools.

 

[CorBlimeyLimey]

SW has plenty of limitations, especially in sheet metal. SW is a very good "all round" mechanical design tool, but is considered mid-range in its capabilities. It cannot match the high-end (Catia, NX, etc) & other more specialised (and much more expensive) products.

 

[rgrayclamps]

Hi, sbriar1:

This model seems doable in SW. Try to make a flat sheet metal part. Add cut features. Add forming features with FORM tools. Then, roll the sheet metal into finished parts with FLEX tools.

Good Luck!

Alex

 

[CorBlimeyLimey]

The Flex option is a good alternative, but you will still have to use configs to control the suppression state of the Flex feature. It will not be recognised and flattenable within the SM mode.