Re: [CAD_CAM_EDM_DRO] What kind of motor should I use?

3hp..... square totally enclosed housing with external fan under larger top cover.
Nice and quiet. Maybe the noisy one has something out of kilter ??

For the cost, one can throw away a lot of conventional routers. The problem is
that just when you find a really good unit and have a bracket made, they will for
sure go and discontinue it !
American HF spindles ?? To my knowledge a lot more than Perske !

There is a company here in Wisconsin, down in Racine I think. Big Money.

Look at the M8 reference at Datron: http://www.datrondynamics.com/

The spindle link shows what they use. Probably a $10K spindle. I Wonder who makes
them so we could check out their dumpsters! :-)

I've watched some of these Datrons Run. Incredible stability for a machine that
"looks" like it is made from extrusions. Watching one hack out big passes of
aluminum at a show just blew me away.

Chris L

JanRwl@... wrote:

> In a message dated 03-Feb-02 15:42:15 Central Standard Time,
> datac@... (Chris) writes:
>
> > You had a LOUD Perske ??<< HORRIBLY-so! (a BIG 'un: 3.5 HP)
>
> > The two (note correct use of word [!!!] ) I stood behind were very quiet. <<
> > There are two "groups" of Perske spindle-
> > motors, one with an external fan (sirens!) and TENV kind. The ones YOU
> stood behind: Fans?
>
> As you pointed out, they > get expensive because the Inverter costs so
> > much more than the spindle.
> > We could use a few newcomers *to the affordable spindle field *too! <<
> > Scho' nuff! Listen-UP, 'Merikun mfgrs!!!
>
> > Some of the German stuff does not seem to have any resellers over here.<<
> Yeah, Perske has a reseller in NJ. Been 15 years, so I'd have to look in
> file to see who/where.
>
> I wonder what kind of $$$$ they can buy stuff like that for over there?<<
> Even HIGHER, I think, due to the German VAT and Lohnsteuer. >>
> Maybe one of the European Group
> members > could set up someone in the states *to market spindles at a lesser
> > rate.....<< Lossa luck!
>
> Did I read somewhere in this group that "regular 3-phase tool-motors" can be
> used at higher frequencies [with care] to produce high-RPM spindles? Seems
> dangerous and dubious. Can an expert "in here" on that comment? The ONLY
> experience I have with HF motors is with a 95 watt "aircraft instrument
> motor" running on 115 VAC 400 Hz. (which I get from a self-designed/cobbled
> stationary inverter that "simulates" sine-wave 400 Hz/115 VAC). That is for
> a PCB drill, and it works just fine (12,000 RPM, not 24,000!!!) But, took
> some fancy machining to install a collet and larger ABEC-7 spindle-bearing in
> place of original "plain shaft", etc.)
>
> P.S: The Perske stuff DID seem like well-did hardware, but even still, the
> pricing was what I'd guess would be half- to as-much-again as any American
> mfgr. would want for "same thing". Comments? American HF spindle makers?
>
> Sincere ignernce, Jan Rowland, old troll
>
> [Non-text portions of this message have been removed]
>
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