On Sat, Nov 07, 2009 at 10:15:39PM +1100, Frank Tkalcevic wrote:
> I was thinking of installing a blank in the 4th axis vertically, then using
> a small ballnose endmill across the top of the pulley to shape each tooth.
> I'm not sure of the profile; if it is a simple semicircle, then it would be
> simple case of cutting across the pulley for each tooth, and maybe a clean
> up pass or two to get rid of the burs.
But then you have to make and attach two cheeks, to keep the belt on,
unless the cheeks are thicker than the pulley gullet radius, so there's
something left after the teeth are cut.
For the small number that I'd do, a narrow abrasive belt running around
the end of a finger the width of the belt, and somewhat thicker than the
gullet, could fit between the integral cheeks, to chamfer both gullet
lips in one go.
But abrasives should stay in another room, so that looks like hand work.
:-(
Erik
--
Do not do unto others as you would they should do unto you.
Their tastes may not be the same.
-- George Bernard Shaw
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