Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work.

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Default What press force is needed ?

On Sat, 6 Feb 2010 05:54:14 +0000 (UTC), Andre Majorel
wrote:

Thanks for the hint, Ned. How do you know what press force is
needed for a given job ? Specifically, punching holes about
1 cm² in 1 mm steel or 3 mm aluminium.


Force = sheared area x shear strength of the material x punch
geometry fudge factor

http://www.precisionsheetmetal.com/home/forces.htm

--
Ned Simmons
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