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OK guys, help me out on this one.
I want to machine an oil groove
inside a 1/2 id bushing that is 3/4 long using a 1/4" dia ball cutter, ie
carbide burr. The factory is jerking me around on price and delivery so I
figure for $1.85 each, x 100 bushing, I can do this myself. (This damn
pride gets me in more trouble)
Anyway, I essentially want two
elipses thru the bushing, that will meet at the center point on one wall.
Now how do I describle the ellipse to keep a steady .010 deep groove around the
inside of the busing hole, while traveling a total of .50 in Z, +/- .250 from
bushing center. I have done an ellipse in xy plane, but never in all three
at once.
This is a standard oil groove
for bushing, called a figure 8 oil groove by some, but I just don't have 3 weeks
to wait for them to do it either.
Any and all help is greatly
appreciated.
Thanks
Jon
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