Re: [CAD_CAM_EDM_DRO] Spindle motors

From my experience with 12 and 24V DC motors (mostly for robotics drive and
manipulator applications), cooling is going to be a big deal. Probably
you'd need a serious external fan, and a cooling jacket probably wouldn't be
excessive. By the way, what is the voltage rating on those motors? I
didn't see one listed.
Michael

On 8/28/07, David G. LeVine <dlevine@...> wrote:
>
> High speed spindles tend to be heavy and hard to program.
>
> The RC fraternity has some new "inrunner" (faster) and "outrunner"
> (more torque) RC motors which seem to help reduce this mass (which
> reduces the gantry loads which...)
>
> The controllers are like the one at
> http://www.align.com.tw/html/en/assembly/rce-bl75ge.htm which is a 54
> Gram controller which handles 1.8 KW (over 2 HP!) up to 190,000
> RPM. Of course there are bigger ones up to 125 Amps continuous...
> http://www.castlecreations.com/products/phoenix-125.html
>
> Now the motors are not quite as good, but this one appears to be good
> to 12,000 RPM and almost 2 HP continuous but weights less than a
> pound, 2" in diameter, 2 1/2" long. These DO require external
> cooling, on a model aircraft prop wash cools them.
>
> Or this one
>
> http://www.rctoys.com/rc-toys-and-parts/NM-1509-25F/RC-PARTS-BRUSHLESS-MOTORS-NEUMOTORS.html
> which is over 1 HP and rated for 60,000 RPM continuous.
>
> Make the spindle light and the gantry gets lighter and the slew is
> faster and...
>
> David G. LeVine
> Nashua, NH 03060
>
>
>


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