Jon you understand me totally. You knew I'd want to embrace the maximal
complexity and make the problem hard. So what I REALLY need is a tip-tilt 4th
stage, a .... 5 stage system. Am I out of signals on the parallel port? My
computer is off in the shop so I can't check right now, but I'll look into it.
Which raises a materials question then. Do people have much experience
machining cast iron? I understand steel sings under load and there's no way Al
can take the kind of loads a gear cutter would undergo. Would an Al 'skin' with
a steel 'skeleton' work out?
Anyone know a cheap source for tailstocks when I would run this thing in
strait rotary stage?
Andrew
>
> But, the lathe may not be the most ideal solution.
> Using gear cutters,
> they will turn in the horizontal plane. To cut
> helical gears, you need
> to have the axis of the A axis inclined relative to the
> horizontal.
> Universal dividing heads have a swivel that allows the axis
> to point up
> or down. Then, the tailstock can be raised or lowered
> to reach the end
> of the arbor. You tilt the A axis to match the helix
> angle. Of course,
> you could mount the lathe on spacer blocks to accomplish
> the same.
>
> Jon
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