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wing rib "joggle"

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DerrickM

Mechanical
Aug 27, 2009
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ok, i have yet another problem (i get them ALOT). im currently drawing a wing rib, and i need to put joggles in the outer flanges to allow .032 in. clearance for the horizontal stiffeners. (a joggle is just a little dog-leg in the flange that rivets to the wing to allow clearance for the wing skin to lay flat across the stiffers, just to clarify) im fairly new(ish) to sheetmetal, and i have not a clue how to attack this. any help? there needs to be 6 joggles 1.25 in long to the first setback on the dog-leg. ill post additinal info a little later as needed.

pulsating combustion rules!
 
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SolidWorks help search on "jog" does a decent job of walking you through the process. There are a couple ways to generate them.

-Dustin
Professional Engineer
Certified SolidWorks Professional
Certified COSMOSWorks Designer Specialist
Certified SolidWorks Advanced Sheet Metal Specialist
 
tried it, problem is its not on a planar face. it also has to disform the sheet perpendicular to it.ive been toying around with form tools to see if i can make them work, but to no advail.

pulsating combustion rules!
 
Derrick -

I've had the same problem with sheet metal parts. Curved edge flanges are cool, but to try and combine with either A: jogs, or B: variable bend angle - SolidWorks doesn't seem to have the capability.
As you pointed out....the sheetmetal has to deform adjacent to the jog - which raises the complexity of creating a flat pattern up a notch.
You can model your rib as a solid - without any sheetmetal features - if your intent is to simply create a model. But to be able to create a rib with jogs in the flanges and then create a flat pattern....my guess is you'll have to look into Catia's Aerospace Sheetmetal Module. now we're talkin' some real CAD bucks!
Steve R.
 
ive been messin around with the form tools, i think if i can get that to work ok, i can just creat another config that has the jogs, and just use the part without jogs for the flat pattern. but if im lucky, it might flat pattern with the form tool. if i cant get that to work, il just have to model it as a solid for the stress analysis.


heres what i did get from the form tool so far...

pulsating combustion rules!
 
 http://files.engineering.com/getfile.aspx?folder=86d3931d-0803-42f8-8e7f-3e47d85596ed&file=highlighted_faces.jpg
on the first one with the two highlighted faces, those are suppost to be tangent. im still playing with the part...


pulsating combustion rules!
 
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