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mikekhoo
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Join Date: Nov 2006
Location: Singapore
Posts: 12

Forming of round emboss

09/03/2007 12:03 AM

Is the above forming of a round emboss feasible to manufacture?

The material formed is commonly used galvanised steel.

Is there any design rule or general guideline when creating such forming?

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The Jacket
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Join Date: Mar 2007
Location: Essex, UK
Posts: 27
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#1

Re: Forming of round emboss

09/03/2007 5:15 AM

embosses in sheet metal should be a maximum of 3x material thickness with a maximum side wall angle of 45 degrees.

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dkwarner
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Location: Placerville, CA (38° 45N, 120° 47'W)
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#2

Re: Forming of round emboss

09/03/2007 11:48 PM

I agree with the jacket; you have too steep an angle on the sidewall. Unless your sheet metal is extremely well annealed, and is of a material that does NOT work-harden significantly during drawing, it will shear/tear before you get anywhere near the desired depth. You need to increase the large diameter to at least 30, preferably 40mm.

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BlueAussieBoy
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#3

Re: Forming of round emboss

09/03/2007 11:59 PM

Even if you try to do it using deep drawing techniques the galvanising will be cracked and need re-dipping. This will probably cause some warping of the sheet metal unless the overall dimensions are not much bigger than the embossing you are proposing.

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