Mitering Intersecting Flanges

[kyle.brett1]

Hey Team, 

Desperately looking for some help here, feel like I have explored every avenue. I am new to Fusion so trust that isn't the case. 

I am trying to mitre these three intersecting flanges within the Sheetmetal workspace ; I've tried the unfolding method, the chamfering method and am at a loss. 

Any and all help is much appreciated  

[Warmingup1953]

You can go via Surface modelling but it is rather laborious! FWIW here is my go at it:

[kyle.brett1]

Thanks heaps for that mate! May be a little more work but the end result is awesome. Never would have considered that as an option. 

Hope this helps anyone with the same problem in the future. Would be interested to know if there are any other ways of tackling this problem too if you could think of any.

Cheers

[johnsonshiue]

Hi! At the moment, the particular geometry is quite challenging to create in Fusion Sheet Metal. The miters need to be created manually. There isn't a one-click solution to do that. Either you need to unfold the two flanges partially and cut middle flange accordingly. Or you will need to use surface model techniques to create the flanges and miters. Please take a look at the attached two designs.

Many thanks!

[JamesMannFusion]

Another method that I normally use is less than perfect in it's result but is quite easy to implement and will get a useable profile. Is just a straight extrude cut where we would want the miter. I use a plane created by the two edges to make sure the sketch is in the correct place and project the top edges of the sheet (see picture below).

The issue with this method is your edges are no longer square, but as long as the flat pattern is created on the top side (or same as the sketch -extrude side) of the part then the laser cut profile should be correct.

  

[JamesMannFusion]

Realised in my case above, that I haven't actually made any clearance if those faces were brought back to being square. So an offset from the projected geometry is needed on the extrude cut.

[TheCADWhisperer]

@JamesMannFusion 

Are there any unresolved issues highlighted in your timeline?

[JamesMannFusion]

@TheCADWhisperer 
Yeah, the original creation of the final flange intersects on itself so throws an error but it does still compute correctly.