Re: [CAD_CAM_EDM_DRO] Questions

----- Original Message -----
From: Larry Edington <ledington@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Sunday, December 15, 2002 6:00 PM
Subject: Re: [CAD_CAM_EDM_DRO] Questions


> Since you are building your own lathe from scratch, why not put a servo
> motor on it
> instead of messing around with gearing. You can get some nice PM DC motors
> surplus,
> add an encoder to it ( www.usdigital.com ), put a servo amp on it and you
> now can
> use that as either a standard speed control by just inputting a PWM pulse
> stream into
> the servo amp or attach a CNC controller rotary axis output to it for real
> threading
> control.
>
> If you can't find a motor that gives the torque you need for cutting you
can
> always gear
> the motor drive down using some gears or timing belts but still not have
to
> mess with
> change gears for threading.
>
> later,
> Larry E.
>
> ----- Original Message -----
> From: <Yesamazza@...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Sunday, December 15, 2002 9:27 AM
> Subject: [CAD_CAM_EDM_DRO] Questions
>
>
> > Hi
> > I am building a small lathe that I would like to be able to
thread.
> I
> > have not selected a spindle head/motor yet. I am planning to use
steppers
> > that are equipped with encoders for the XZ axis. The machine is on a
> limited
> > budget and I am guessing that a match is in the range of 1/2 hp for the
> > spindle. How involved is electronic gearing and can I use any motor to
> power
> > it if I use an encoder to keep track of its precise speed. I have not
yet
> > selected which of the many controller setups to use I am a bit confused
> > whats-What. Thanks Josh
> >
> >
> > [Non-text portions of this message have been removed]
> >
> >
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> >
> > OFF Topic POSTS: General Machining
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if
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> >
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OT
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> >
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> > bill
> > List Mom
> > List Owner
> >
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>
> Addresses:
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> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
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> Moderator: jmelson@... timg@... [Moderator]
> 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
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>