[TheForge] Sprocket with the spline stripped out

[Jerry Frost]

Nicely done Darrell.

Frosty
------------------------
If it ain't forged
it ain't real.
Wrought iron is.
The FrostWorks

Meadow Lakes, AK.


----- Original Message -----
From: "Darrell" <darrell at machinemaster.com>
To: "Sponsored by ABANA" <theforge at mailman.qth.net>
Sent: Sunday, August 22, 2004 7:54 PM
Subject: [TheForge] Sprocket with the spline stripped out


> The spline stripped out of the drive sprocket on the roto tiller on my
> Mitsubishi tractor the other day. I searched the internet and called all
of
> the tractor parts places I could find. No joy any where. The best I could
> find is a place in Portland OR. that would make me one for about $500.00.
> So out to the shop. I built the inside of the hub up with 7018 doing a
> narrow weave pass, let cool, chip slag, rotate a new area to the bottom
and
> repeat until I had enough metal build up.
> Then I chucked it up in the lathe and bored the hub out to the minor
> diameter of the spline. I ground a tooth cutter out of an old file and put
> it in a tool holder on the lathe. There was just enough of the old spline
> pattern on the end of the hub to use as a start. I wrote s short program
for
> the lathe that would run the tool in the length of the hub, move away from
> the hub, retract out of the hub, move .003" more into the hub and repeat
> until I reached the depth needed for the spline. Rotate the spindle to the
> next point and run program again.
> It took about two hours but it worked and the field is roto tilled.
> Darrell
>
> http://www.machinemaster.com
>
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