I want to add a bend in my design to camber it. How can i do this?

[anguskeane]

I have a 3d solid model, and by design it is flat with some variations in heights and thicknesses. However we are required to pre-camber the product, such that when it is completed it will come out matching design.

 

Reporting to the model becomes tricky, as the model is incorrect to the intended starting product, but correct to the final product.

 

How can i add this camber? i want to kink it at the centreline, but have it "bent up" 14mm at the ends, without losing any dimensional accuracies. 

I have tried the "slice" command to split the body at the centre, and a 3d each part rotate along the x axis, but i want to know if there is a better way?

 

Unfortunately i cant post images.

[BIGAL]

As no images a bit of  guess have you tried extrude using PATH option ? The path can be an arc.

Edited November 29, 2022 by BIGAL

[anguskeane]

 

22 hours ago, BIGAL said:

As no images a bit of  guess have you tried extrude usig PATH option ? The path can be an arc.

 

Hi BigAl, 

Yeah apologies its a proprietary concern, but imagine you have a sheet of paper. I want to add a crease and bend such that either end is 14mm lower than design.

 

As this sheet of paper is actually a 3d object with varying thicknesses and structural elements, there is no single profile that i can extrude over the path. I can define the exact plane that would split the 2 halves to be bent, but thats about as far as i have gotten.
Cheers,
Gus

[BIGAL]

I think we will struggle offering advice with no image etc. You can set up 2 UCS and draw all your 3d objects they will be say extruded at 90 to current UCS. then make a joining piece, I don't do enough 3d but you can do 3d fillets may be able to create the arc part that way.

 

Google "fillet 3d solid autocad"

Edited November 29, 2022 by BIGAL

[ReMark]

So, you would like us to help you solve a crossword puzzle, in the dark, just by listening to you read us the clues?  Ain't going to happen.  Either post an image of what you have so far or a 2D profile.  Nobody here is going to steal your idea then turn around and sell it to the Chinese.  Heck, we don't even know what industry you work in.  Help us to help you. 

Edited November 29, 2022 by ReMark

[lrm]

As others have stated a picture would help.

 

If the "crease" (bend line) is straight  then use slice to cut the solid in two.  Use rotate3d with an axis defined by 2 points to rotate one of the halves by an angle that yields the 14mm offset.  Specify points on the neutral axis for the 2 points.  Fill in gaps formed by the rotation. 

[anguskeane]

 

On 29/11/2022 at 21:55, ReMark said:

So, you would like us to help you solve a crossword puzzle, in the dark, just by listening to you read us the clues?  Ain't going to happen.  Either post an image of what you have so far or a 2D profile.  Nobody here is going to steal your idea then turn around and sell it to the Chinese.  Heck, we don't even know what industry you work in.  Help us to help you. 

And as i have stated before, it is proprietary secure data, so i cannot post a picture. if you dont understand the question or example given then your discomfort does not need to be known by anyone.

 

On 30/11/2022 at 02:51, lrm said:

As others have stated a picture would help.

 

If the "crease" (bend line) is straight  then use slice to cut the solid in two.  Use rotate3d with an axis defined by 2 points to rotate one of the halves by an angle that yields the 14mm offset.  Specify points on the neutral axis for the 2 points.  Fill in gaps formed by the rotation. 

Thanks irm, ill give that a go. I think ill be able to put together a script to do this too. and yes, its a flat object with a straight crease line. you can think of it as a large pane of glass thats being supported along the centreline such that the 2 ends sit 14mm lower than the centreline. Now consider that pane of glass has varying thicknesses and shapes and patterns and structures on it that all need to follow that camber. So extruding the shape is not an option.

 

On 29/11/2022 at 14:54, BIGAL said:

I think we will struggle offering advice with no image etc. You can set up 2 UCS and draw all your 3d objects they will be say extruded at 90 to current UCS. then make a joining piece, I don't do enough 3d but you can do 3d fillets may be able to create the arc part that way.

 

Google "fillet 3d solid autocad"

Thanks BigAl, UCS seems like the way to go

[ReMark]

-Comment removed by ReMark-

Edited December 1, 2022 by ReMark