Re: Semi-good high speed spindle idea?

Maybe chuck a shaft with a belt driven chuck. Envision a ball bearing
center chucked in a stationary (non-rotating chuck) belt driven by
an additional motor.
Randy

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "vrsculptor"
<vrsculptor@h...> wrote:

>
> I would like a high speed spindle for small diameter tools for my
> mill which is limited to around 4K rpm. It would be nice if it did
> not alter my x/y position and not use up much of my 8" of spindle
> travel.
>
> A right angle spindle where the motor is parallel to the table

would

> be ideal. It could be set to the spindle center and shouldn't take
> up too much height. The problem is finding a decent high speed

right

> angle drive.
>
> I think a solution might be to cut up a cheap right angle die
> grinders. They are ball bearing, already have a gearbox, collet and
> are rated for 11K RPM. I haven't looked but I hope I could cut off
> the air motor and replace it with a pulley/belt attached to a high
> speed motor.
>
> Any thoughts, cautions or suggestions? I don't want ot sacrifice a
> die grinder if I'm barking up the wrong tree.
>
> Roger S
>
> PS: I don't have a large enough comressor to run my vulcan spindle
> grinder.
>