Re: [CAD_CAM_EDM_DRO] Kavo spindle inverter

Hi Bob,
thanks for replying, I can't get any specs for the inverter other that an
operators manual, and after reading the manual I think the inverter is rated
for 40 volt motors because it faults out when connected to the motor. The
inverter could be faulty, I'm unable to find a conclusive way of testing it.
regards,
Denis

On Tuesday 30 November 2004 01:58, Bob Muse wrote:
> Hi Dennis
>
> I am assuming that your spindle is three phase. A few years back I had an
> idea to use an automobile alternator (less the diode bridge) to generate
> the power for a high speed spindle. I was going to drive it with a
> variable speed DC drive and motor which should give the spindle variable
> speed. I ran some tests with the alternator driven by the spindle on one
> of my mills. As I recall the frequency was working out fine but the
> voltage, which would be regulated by alternator field current, was short of
> the 160 volt that I needed. This would not be the case for your
> application. I realize it's not as clean a solution as a solid state high
> frequency inverter, but it would be inexpensive.
>
> What are the specs on the Kavo type 4444 inverter that you have? Thanks
>
> Regards,
> Bob
>
>
>
>
>
>
> ----- Original Message -----
> From: "Denis Casserly" <denisc@...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Monday, November 29, 2004 2:44 PM
> Subject: [CAD_CAM_EDM_DRO] Kavo spindle inverter
>
> > Would anyone know of an inverter circuit that i could cobble together for
>
> a
>
> > 50000 rpm Kavo spindle model # 4050, it's specs are 24Volt, 100 watts, 83
>
> to
>
> > 833 hz, field windings are delta and .5 ohms DC each and it is an
>
> induction
>
> > motor as opposed to permanent magnet. I have a Kavo type 4444 inverter
> > but it's not a good match for this spindle if anyone is interested in
> > buying
>
> it.
>
> > Thanks, Denis
> >
> >
> > Addresses:
> > FAQ: http://www.ktmarketing.com/faq.html
> > FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> > Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
> >
> > Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> > Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> > List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...,
>
> timg@...
>
> > Moderator: pentam@... indigo_red@... davemucha@...
>
> [Moderators]
>
> > URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
> >
> > OFF Topic POSTS: General Machining
> > If you wish to post on unlimited OT subjects goto:
>
> aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
> you have trouble.
>
> > http://www.metalworking.com/news_servers.html
> >
> > http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
>
> sister site to the CCED group, as many of the same members are there, for
> OT subjects, that are not allowed on the CCED list.
>
> > NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
>
> DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
>
> > bill
> > List Mom
> > List Owner
> >
> >
> > Yahoo! Groups Links
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...,
> timg@... Moderator: pentam@... indigo_red@...
> davemucha@... [Moderators] URL to this group:
> http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
> aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
> you have trouble. http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
> sister site to the CCED group, as many of the same members are there, for
> OT subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
> DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........ bill
> List Mom
> List Owner
>
>
> Yahoo! Groups Links
>
>
>