Re: Driving a Bridgeport Knee

I was wondering if this was feasable also, if my machine wasn't
buried under a ton of stuff i would investigate further. While i do
not have any answers i do like hearing your ideas or anyone elses on
the subject. One thing i am affraid of with usaual methode of
driving the knee, is breaking the bevel gear with to much
horsepower...

Wally


--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Polaraligned"
<polaraligned@o...> wrote:

>
> I am thinking about driving the knee with a pulley just below the
> bearing on the Z-axis leadscrew. I would machine the leadscrew down
> to accept the pulley. The motor would be mounted on the side of the
> knee, and to get the timing belt out I would cut a rectangular slot

in

> the side of the knee.
>
> Advantages:
> Motor is out of the way.
> I can still use the handle to move the knee via the bevel gears.
> (can't leave the handle permanantly attached!)
>
> Disadvantages:
> Lose about 2 inches off the bottom of the knee travel
> Changing belts would be a real pain in the you know what.
> Permanantly alter the knee with hole (which does not bother me)
>
>
> I think the motor will have no problem with clearances.
> Does this sound good? or am I missing something.
>
> Scott