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The latest hillbilly contraption..

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  • The latest hillbilly contraption..

    Hey guys! Finally got the golf ball esculator out of the shop (pics after we get it up and installed later in the year).
    A mining company approached me to build them an extra heavy duty core splitter. They cut the drill cores into lengths then break them down the middle with these machines. They can then tell what's in the rock that may interest them.
    The regular core splitters are light duty with a 12 ton jack. Most are made with 1/4" thick angle iron. This brute is made with 3"X3"X3/8" angle... 1 3/8"X 3" cross beams and heavy plate die holders. The jack is a 20 tonner. I've talked them into trying an air jack but haven't got the mount made for that yet.
    I also built a roller bearing guide setup for the sliding knife holder.

    The dies... top and bottom. The core lies in the bottom "V" groove then is split in half with the top knife. Also shows the roller guide setup.

    Some pretty heavy stuff

    But, but.. you can't machine stuff like this on a mill drill...can you?

    Russ
    I have tools I don't even know I own...

  • #2
    Looking good,should have built two thou,it's nearly a small bending break
    I just need one more tool,just one!

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    • #3
      Darin.. LOL! Funny you should mention that. They like this one so much...they are now talking about having me build another, wider one that uses two sets of dies lined up side by each.
      Getting a healthy chunk of change for this one. The bigger one will be even bigger $$$ of course
      I have tools I don't even know I own...

      Comment


      • #4
        lined up side by each.
        My father is the only other person I have heard use that phrase.

        Does your core splitter have a safety mechanism? Looks like an excellent limb remover.

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        • #5
          Tony... I'm not finished it quite yet. It will have flip up guards that cover the cores and blades. The core material (ok...rocks)can shoot out at a pretty high velocity and needs to be contained.
          I have tools I don't even know I own...

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          • #6
            Use some 1/2" Lexan so they can see what's happening. They will have some at one of the glass shops in town that repairs ROPS canopies.

            What color are you painting it?
            Free software for calculating bolt circles and similar: Click Here

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            • #7
              We used a similar compressive tester to take concrete cylinders to their yield point, or further if your hand wasn't fast enough to release the pressure before the 6" cylinder exploded. A lexan guard would probably not be a good idea, as our door was 1/4" steel and it had some dents in it. It was always getting pounded, so visibility would be short lived.
              The hydraulic ram was registering about 6 to 7 thousand psi on that six inch cylinder, before the cylinder broke, so it does take some hp to make one break "rocks". 28 day old cylinders often went above the capacity of the machine, but we just released them unbroken, since we just needed to be sure they were strong enough.
              David from jax
              A serious accident is one that money can't fix.

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              • #8
                Lexan has greater impact resistance than steel for the same thickness. Instead of shattering or tearing it deforms. Lexan with Marguard finish is highly scratch resistant too. I've been working with 1/2" Lexan lately and there is no way that some rock will break through Lexan sheet that thick. That's why it is used in the ROPS (Roll Over Protection System) canopies on heavy equipment.

                Note added: Don't underestimate plastics. Delrin also has greater impact resistance than steel.
                Last edited by Evan; 02-13-2008, 10:08 AM.
                Free software for calculating bolt circles and similar: Click Here

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                • #9
                  Looks good - as usual. I built a shop press with a similar configuration. I've noticed that the return springs raise hell when a tight bearing breaks loose. Don't know quite what they're doing but today looks like a good day to put some steel between them and my face.

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                  • #10
                    Install some automotive shocks.
                    Free software for calculating bolt circles and similar: Click Here

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                    • #11
                      I was walking away from a punch press when something whined by.. a 1/4 bolt, spit out and stuck in the 3/4 plywood wall.

                      Just something else to worry about as I use my 50 ton press.
                      Excuse me, I farted.

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                      • #12
                        Torker, looks real good. I'd say they'll be happy. One thing about the coil springs, you might want to run some steel cable through them like on a garage door spring so if the end breaks it won't slap somebody in the head. In this day and time, you got to do what you can to cover your butt.
                        Jonathan P.

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                        • #13
                          When I first looked at the title I could have sworn it said Hillbilly Contraceptive. This may do the trick for that as well!

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                          • #14
                            Hardly a hillbilly contraption in my opinion. I think it looks very well made.

                            Did you have to use anything especially hard for the die portion? I figure the rock samples are going to be pretty abraisive. Is that holder replacable (other than removal with a smoke wrench)?

                            Edit-- one other thing might help make it even more "finished"-- a couple of lifting eyes. Handles might be an alternative, but I am guessing its a ball buster!

                            Paul
                            Paul Carpenter
                            Mapleton, IL

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                            • #15
                              but I am guessing its a ball buster!
                              That didn't stop them putting lifting handles on my Land Rover. It only weighs a bit over 2000 lbs.
                              Free software for calculating bolt circles and similar: Click Here

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