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Case sorter
Posted: Sat Aug 21, 2010 9:34 am
by Tycho
I've had a project turning around in my head for quite a while now. Anybody know of a working automatic cartridge case sorting system? I need to get apart the .22 / .32 / .38 / 9mm cases, and the biggest challenge is sorting the 7.65 Para from the 9mm Para - they have the same bottom diameter, only the 7.65 has the shoulder and is slightly longer. That issue makes the "sieve approach" unusable, and even withouth the 9mm/7.65 problem, the .32 is close enough to them to jam the sieves. The industry seems not to have recognized this market so far, can't find a thing on the net... :-) The perfect solution would be something that turns the cases upside down and sorts them by bottom stamps, via video recognition, but I guess that's a bit too startreky... Any ideas, anybody?
Posted: Sat Aug 21, 2010 9:45 am
by Richard H
A vision sorting system is possible but you could probably buy new ammo for the rest of your life for what the system would cost you.
The next easiest would be mechanical system that used tracks that could separate by length, this is common in the automotive industry for bolt feeding. Another possibility might be sorting by weight.
None of these are cheap. We use to have a saying in the automotive industry "anything is possible if you have enough time and money" unfortunately both time and money were usually the limiting factors.
Posted: Mon Aug 23, 2010 5:03 pm
by Matt Clemens
Posted: Mon Aug 23, 2010 6:42 pm
by paulo
Simplicity and elegance wins most of the time!
From
http://www.brianenos.com/forums/index.p ... opic=44551
If you want to build yours
Caliber - Brass – range of rim size
.25 - .295 - .300
Sieve slot = .325
.32 - .350 – 357
.380 - .375-.382
9mm - .385-.392
Sieve slot = .407
.40 - .423 - .432
.38 / .357 - .429-.439
Sieve slot = .455
.45 / .45 gl - .471-.479
.44 sp / mag .504 - .512
Posted: Mon Aug 23, 2010 6:58 pm
by Richard H
You guys did actually read his post right? 7.65 para and 9mm para are the same diameter case hence why he said the sieve method won't work.
Posted: Mon Aug 23, 2010 7:11 pm
by paulo
but not the same length or shape
Posted: Mon Aug 23, 2010 7:40 pm
by Richard H
A sieve works by the minimum dimension, unless you use it like a shaker box and hop the short ones fall into an indentation then you skim the others off.