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LabrosFr1-Visitor
1-Visitor
March 20, 2019
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Simulating a aluminum can manufacturing process with Sheetmetal

  • March 20, 2019
  • 8 replies
  • 4464 views

Hello,

So what I wanted to ask is how can I simulate the process of aluminum can manufacturing in Creo's Sheetmetal.

What I'm trying to do in the first step is create a disk that step by step will formulate the can.

 

So what I first do is planar a disk like so

https://imgur.com/a/cIZc6d7

 

But the when I try bending it inwards so that it takes the form of the cup creo doesn't let me have a circle as a bending line.

I tried the punching option but I can't get the result I want.

Is there a different approach to this?

I want to model the can like this so I can have the unbended disk as the first step.

The can process that I'm trying to replicate is show here https://youtu.be/hUhisi2FBuw?t=97

 

Thanks in advance guys!

Best answer by BenLoosli

Your first mistake is equating sheetmetal bending to sheetmetal deep die drawing. The can is done with deep die drawing.

Sheetmetal bending maintains the part thickness and is usually done with a press prake that bends in a straight line.

Sheetmetal deep die drawing starts with a blank and stretches the material into the die and make the walls a variable thickness. There are special formulas and software for calculating the size of the disk and thickness for a finished product.

 

Bottom line: You can NOT use the sheetmetal forming process in Creo to create a can from a disk.

8 replies

B
BenLoosli23-Emerald IIIAnswer
23-Emerald III
March 20, 2019

Your first mistake is equating sheetmetal bending to sheetmetal deep die drawing. The can is done with deep die drawing.

Sheetmetal bending maintains the part thickness and is usually done with a press prake that bends in a straight line.

Sheetmetal deep die drawing starts with a blank and stretches the material into the die and make the walls a variable thickness. There are special formulas and software for calculating the size of the disk and thickness for a finished product.

 

Bottom line: You can NOT use the sheetmetal forming process in Creo to create a can from a disk.

    Patriot_1776
    Patriot_177622-Sapphire II
    22-Sapphire II
    March 20, 2019

    'Morning Ben!  I agree.....BUT.....could you use the "die" function in Creo to mimic a deep-draw operation, then after you get the inner shape you wanted, revolve a cut to mimic the thinning of the walls?  To me, that would be a TON more work than if you just modeled the outside and shelled it (ignoring the different wall thicknesses given by any deep-draw operation).  I'm not a sheetmetal expert in any sense though, so I'm just guessing.

     

    I did 2 Coke bottles many years ago (20oz, and 2L, where I added a handle to both as a "what-if" study), and shelled it once I got the outside the way I wanted, and I mimicked the thickening by the neck as a result of the blow-molding process by revving a protrusion where it gradually thickened.  I just measured the bottle outside and cut it along the axis to get a rough Idea of the geometry at the neck.  I was really happy how it worked out.

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