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Old 06-30-2012, 03:38 AM   #1
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Default Huaco's Grain mill project

UPDATE:
The nature of this thread has changed... it started as a motorized mill thread... but now it is more of a DIY grain mill build project. I'm sure I will motorize this mill somehow... Time will tell...


I stopped by an estate sale today and found an electric 1 horsepower motor. It still works. And... Best part... It was only $10! Looks like I have a grain mill project in my future!
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Old 06-30-2012, 07:44 PM   #2
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Got any pics?

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Old 06-30-2012, 10:07 PM   #3
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Nice! What type of motor is it...furnace motor? Gear reduction motor? 1HP should be able to chew through just about anything

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Old 06-30-2012, 10:18 PM   #4
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It is a GE motor. Not explosion proof but I silk just run a fan on it while milling. Will post pix later. Plan to reduce the rpm with shieves.
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Old 12-27-2012, 01:51 PM   #5
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I ran the numbers on trying to get that motor down to ~300 rpm and it was going to take a HUGE pully to get it done. I will make a polishing station out of that motor and look for another to power my mill. Speaking of mill... I have been working on it.

I was actually inspired by this thread.

So, a while ago, I picked out a piece of 1-3/4" diameter steel from the scrap bin. (yes, the boss said I could have it...) I talked to my machinist and we are going to work out a deal with homebrew and maybe some $ for the machining duties.

This is what I have come up with as far as design. The rollers are 1.75 diameter x 6". The adjustment knobs have an eccentric hole in them that mounts the bronze bearing and thus will allow the mill to be adjusted. I have some fine tuning left to do on the adjustment. It actually adjusts way too much right now.

Here it is in full view:


Here is a view sectioned longitudinally through the driven roller.

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Old 12-27-2012, 04:13 PM   #6
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I made a few small adjustments.
- Recessed the flange on the bearings to leave only a 0.020" gap between the side plates and the rollers.
- Adjusted the eccentrics so I get a 0.010" min gap and a 0.190" max gap.

This is still a heck of a lot of adjustment, but if i ever wanted to crack any other non-oily grain it would accommodate it.

Top view min adjustment of 0.010"


Top view max adjustment of 0.190"

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Old 12-28-2012, 01:37 PM   #7
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Huaco, no pictures are showing. I'd definitely like to see what you got going on!

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Old 12-28-2012, 02:16 PM   #8
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Quote:
Originally Posted by stamandster View Post
Huaco, no pictures are showing. I'd definitely like to see what you got going on!
These are hosted off drop box. Is your computer blocking drop box?
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Old 12-29-2012, 04:01 PM   #9
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Yeah it must've been because i see it now :-) Nice work!

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Old 01-02-2013, 01:25 PM   #10
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^^^
Thanks!

UPDATE:
My aluminum stock plates showed up the other day in the mail. I ordered them from "6061 DUDE" on Ebay. He sent me an extra chunk of the 3/4" flatbar for free! My Bronze bushings should be delivered today. I will work on finishing up the shop drawings for my machinists soon. Dang... this is going to be great having a mill!

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