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I went a little nuts with the layout fluid but hey,
this is the first time I've ever used it. I really like how easy it is to
scribe lines, and they show up so clearly. |
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One wheel hole cut. I clamped both the
top and bottom plates together before cutting and machining them so they
are exactly the same. The old top and bottom plates were never very close
to each other dimensionally. |
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Two holes cut and the wheels even fit in place,
yippy... |
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I used a 1/8" end mill to cut out these squares.
I suppose it have been a little easier to cut out the squares with a jig
saw then clean up the edges on the mill. Then again, you haven't seen my
jig saw... |
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A nicely cut bottom plate with burrs filed off.
Glad I didn't get rid of the files after I got the milling machine. I still
use them a lot! |
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And a top plate that is EXACTLY the same as the
bottom! |
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The front wheels mounted to the bottom plate. It
took so little time to make these new pillow blocks that I didn't even get
any pictures of their fabrication. ;-) |
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I set the hinged front end between the plates to
make sure everything was going to fit. I've got a little tweaking here and
there but for the most part the pieces fit together nicely. |
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The hinge in place. |
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I'm learning to dial in every piece I cut on the
mill. You don't want to waste some material just because you forgot to make
sure everything was square. |
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Cutting the front half of the new hinged
wedge. It takes forever to take off any substantial amount of material when
cutting steel. Cutting this half of the wedge took about 12 milling hours.
And that's only 1018 cold rolled steel. |
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Front half of the wedge is only half cut. Ugh. |
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The two hinge pieces, the front half, with 10 degree
angle, is only half cut. |
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These 15 one inch long AL pieces will become the
actual hinge with a 3/16" stainless steel rod though them for the pin. |
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Finally finished the front half of the hinged wedge.
Totally mill time, about 24 hours. |
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Here, cutting the back half of the hinged wedge. |
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Still cutting the back half of the hinge. That step
is so I can mount this piece to the 3/16" Al armor. That's right, the
step is 3/16". |
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Just a little test fit. None of the hinge pieces
are actually mounted. |
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And we have one half of a hinge. |
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Drum roll please. Ladies and gentleman, I give you
a hinged wedge. |
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And look at that, it actually hinges..... |
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Since I had such a hard time controlling Some Parts
at last Novembers BattleBots, one step I'm taking is getting more rubber
on the ground. To do that in the front I'm double up the wheels. On the
right are the old wheels and on the left the new double wheels. If you're
following the latest Malvolio rebuild you'll notice that doubling up is
getting popular in the Raybotics camp... |
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Since there seemed to be too much wasted space between
the wheels I machined the little hub of the wheels on the mating side. Saved
about 1/4" in wasted space. Hey, like a dog, sometimes you do it just
because you can. ;-) |
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Since I now have the capacity to make the pillow
blocks for Some Parts with far greater accuracy then when I did them with
a hacksaw and a file I decided to make new ones for the next itteration.
Here are the aluminum blanks. Storing my raw materials near my water spigot
has left some oxidation. No problem, comes right off. |
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Blanks mounted in the angle vise. |
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Making sure the blanks and vise are square to the
milling head. |
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Freshly flattened pillowblock ends milled to 10
degrees. The face mill, similar to a fly cutter, really throws off some
chips. I had to take my Jeep out of the garage to keep the chips off it...
They hurt when they hit your arms and face too. |
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Nice flat pillowblock ends. |
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Four completed pillow blocks, minus hole of course.
These took me about three hours to cut and mill. It took me about a week
to finish four the first time. |
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When you don't have any fancy schmancy cutting tools
you use what you got. I set up a 10 degree cut in my miter box and got busy
with the hack saw. I cut a little long because this method doesn't give
a perfectly straight cut. |
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I then manually milled the piece to size with a
nice flat bastard. |
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Here are three of the first four pillow blocks.
I need eight total. |
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This is sort of the layout for these pieces. Obviously
the wedge will be attached to the top and bottom of these pillow blocks. |
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And one completed assembly. This is a front assembly,
probably left. |
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Same assembly, different angle, better lighting.
The front axles will be driven off the rear axles similar to how I did Malvolio,
via belts. A 4WD lightweight wedge ought to have some good pushing power. |