[TheForge] Sprocket with the spline stripped out

[Larry and Pat Brown]

I would try to feel that I got paid $250 an hour for the repair.
That would make me real happy!
L Brown




At 08:54 PM 8/22/2004 -0700, you wrote:
>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