Open Source Ecology Ironworker II, 10 Mar 2012

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From YouTube: Piranha Ironworker linkage

Description

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A

Briona show us the the linkage mechanism, so this turned on. Why don't you turn it on and show how it moves up and down so what's up and down?

A

Okay and the way that this happens here, so this is the part that actually pulls down on it, and this is attached to another linkage.

B

There's these things they have a pin down below the two any two. This linkage is this odd kind of triangular shape, which.

A

B

To this cylinder right here, yeah.

A

It's a long cylinder here attaching good.

B

Point right there down.

A

There and so there's this triangular shaped linkage and what like two pinhole, two pins, that that's.

B

What these pins hold there's another pin down here that attaches is a linkage, and that just holds it to the machine. Okay,.

A

B

There's nothing welded, which is really nice, because if any of this messes up you can replace it I mean.

A

B

Is an expensive part I had it cut for me is fifty five dollars for one of these, and so, but that's not that expensive. If it breaks, you can replace it for.

A

One of what one.

B

Of these funny shape will play tray, yeah.

A

B

A

This is the main linkage arms that we saw in other video yeah.

B

Some vertical linkages: I.

A

B

Of named everything, it's one of the beautiful, beautiful things about be your prototypers. You can name whatever you want. Okay,.

A

That's the vertical linkage- and this is the pivot linkage here better.

B

I feel this is the main pin. This is the upper arm. Main pin is just what this big arm pivots about. So maybe.

A

B

B

Because it holds the pin that attaches to the linkage.

A

Yeah, so in our version we've got the angle shear and the.

B

A

Version, mm-hmm, okay, you want to tell me a little bit. So what all are the blades that are required in this machine? So we've got the shear blade.

B

There's one blade that mounts up here: they all mount with these Allen's, so I'm getting islands that are this size sitting here and turn.

A

It on and let's let's see it because it's down down position so.

A

So you've got this upper blade. No.

B

There's there's two up: there's one upper blade here: that's this one and then this is the bar shear here. So that's separate I'm, not including the bars here with this model, but there's room to mount it. So I.

A

Made it a little.

B

Longer this table is longer so that you can okay.

A

Well here so we've got the bottom blade of this year. Yeah.

B

A

It's only what like to in, like one.

B

And a half inch.

A

There's some points.

B

All back 3/4 uh-huh.

A

And then the upper blade this one so there's two blades there.

B

Yeah and they're the exact same thing, and you can use all four sides of this because it's perfectly symmetrical, so you can, if this side dull is you can take it out and rotate it and use another side. Mm-Hmm.

A

Sorry actually getting the blades from when this is Roger Olson this he should be.

B

No, he sent me he's having one that was the lower angle, blade.

B

But that's that right there there's two: those.

A

Ladies, so, how thick is that.

A

Okay and you you've got the same style and yours.

B

A

It's in two pieces just like here, one side, another okay, excellent and then.

B

It can pivot kind of hard. We don't really use the angle much cuz this angles here. It's the clamp, doesn't work very good. So it's kind of funny.

A

Hustle and your design, this also pivots yeah.

B

It doesn't nest you and now make sure the cuts, clean and sharp and all that mm-hmm.

A

And then on our backside, we don't have anything right.

B

B

This arm going to this point here and then nothing here, that's about six, eight inches of material, but.

B

If you want to retrofit it in the future, you would need over eight hundred dollars. They have three machine. This whole piece to be able to retrofit, whereas I'm keeping it as is, and you don't want me to pay the extra it's only maybe like 50 bucks extra in the beginning to add capability of retrofit. How.

A

By allowing for that's what do you cut out that that's spot for it in the first place,.

B

I kept this in my design so that this comes out, I haven't designed a table or anything, but basically there's just those there. So if you want you can what you would need to do to retrofit. So you need to mount a table here with supports because there's a lot of force operating at this point and then just machine the machine. This.

B

They can have them laser-cut this, so it's more accurate, so you will have to do so much machinery later on. If you want to rush up it.

A

B

Yeah, you need to buy the blades tap some holes in the bottom for mounting it, along with like down in here. You're gonna need to figure out something here. You're gonna need a machine away. These arms see these arms. It's shaped like this. You can see it's machined away, that half inch or so you need a machine that away. So you can mount those as well as tap a hole, so you can mount them.

B

A

And then a hole, punch element. Are you allowing for, like this interchange like this here, no yeah.

B

Yeah and that's the only way to do it really, because um the way our punch system works, you're gonna have to remove it if you're punching really big material, because it won't go all the way up, the only thing materials basically to remove it. The punch has a piece: it's just gonna have a hole, drilled right here.

B

If you have two linkages with like a bolt that attaches it and then down below there's a kind of the big thing that presses: it's got a shot where you mount the the punch net and can just push down, there's a stripper on it and there's a guy that's gonna, attach to here with.

A

B

Bolts, just attaching in there the guy is gonna, hold it in place, so it doesn't wobble, and so that goes perfectly of the guy. So.

A

This this kind of piece for this.

B

Is for breaking for.

A

Breaking we'll have that capacity with ours.

B

Properly and then any piranha tool you can put on it, you will have to be considerate of the capacities like you can probably put on a hundred twenty ten stuff, but I don't know that it would work to its full capacity if you're putting that on here, because this is gonna be a ninety. Okay,.

A

B

One thing I should probably say to is how I'm making it ninety ten, basically I'm, using designed very similar to this I beefed up these arms made of thicker made this stuff wider, did a few basic calculations to ensure everything's gonna be thick enough and then linkage and stuff. That's the same, but they're using a four inch cylinder operating at 2,600 times, 2,600 psi.

B

So what I did is I took that out put in a five inch cylinder, which gives you much more tonnage and operating at three thousand psi, which gives you pretty much 1.8 times more power, which means you know instead of a this is a 50 time machine 50 times 1.8 equals 90. So.

A

B

That's how I get the capacity all.

A

Right excellent.