Stamping Copper 2

[RustyH]

Good Evening,

I am looking to design and make a machining that can stamp out a 5mm hole in 3mm think copper.
I was wondering how I would go about calculating the force needed to do this.

Also, does anyone think that this would be possible pneumatically with an air piston running off an air compressor?

Many thanks
Rusty

 

[EdStainless]

Try this

https://www.kencopress.com/

Be willing to pay good money for the toolset.
A cheep one will only cause pain and frustration.

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P.E. Metallurgy, consulting work welcomed

 

[IRstuff]

Some possible alternative approaches to drill out burrs
> Pilot hole first, then drill from side 1 partially, and then from side 2 to finish
> clamp between sacrificial plates or templates
> changing drill speed/rate
> manually apply oil

TTFN (ta ta for now)
I can do absolutely anything. I'm an expert!

https://www.youtube.com/watch?v=BKorP55Aqvg

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[Brian Malone]

If your processing time can allow for slightly slower throughput, consider using a center-cutting end mill rather than a twist drill. The finished hole size will be very clean and end mills produce very little backside burr if the cutter is sharp and the proper spindle speed and feed rate are used. For cutting copper no coolant/oil is needed.

 

[mfgenggear]

I agree with brian malone,
using a punch may not produce round or undamaged holes, and expect tool wear of the punch. half of the hole will not have a smooth surface due to it will break and not shear