RE: [CAD_CAM_EDM_DRO] Re: I need more power

It would seem to me that a 3:1 reduction for any decent stepper motor should
give you all the power you would need. What is the torque rating of the
motor you are using? My guess would be that with a 400 to 600 oz/in motor
you would have plenty of power, that is 1200 to 1800 oz/in given the belt
reduction. What are you drilling with this thing anyway? What size drill
bits are you using? An Oriental Motors PK299-01A is rated at 611 oz/in or
you could move up to a PK2913-01A which is rated at 916 oz/in which would
give you 1833 or 2748 oz/in respectfully. I would think that either of
these would handle a drill press quite nicely.

John Guenther
'Ye Olde Pen Maker'
Sterling, Virginia

> -----Original Message-----
> From: turbulatordude <davemucha@...> [mailto:davemucha@...]
> Sent: Friday, February 07, 2003 13:31 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] Re: I need more power
>
>
> Hi MArv,
>
> I just pulled the thing apart to get teh numbers for new bearings.
>
> check the photos section - daves stuff - drill1 and drill2 and drill3
> the Large L is what it would look like if I put on a pretty big
> timing pulley.
>
> since the unit is just loosly assembled for the picutres you should
> get the idea, just please don't aske mt to tightent the belt !
>
> It seems the large L gear will fit : ) but I might need a little
> clearance for the parts !
>
> Dave
>
>
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, Marv Frankel <dcdziner@p...>
> wrote:
> > Dave,
> > It might be easier to visualize, if you could post a
> picture or two,
> > of the present installation, or attach them to a direct email to me.
> >
> > Marv Frankel
> > Los Angeles
> > dcdziner@p...
> >
> > ----- Original Message -----
> > From: <davemucha@j...>
> > To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> > Sent: Friday, February 07, 2003 7:57 AM
> > Subject: [CAD_CAM_EDM_DRO] I need more power
> >
> >
> > > Hi guys,
> > >
> > > I'v got a NEMA34 single stack on a drill press feed.
> > > the stepper has a 24 tooth XL drive gear and the drill have a 72
> XL
> > > tooth driven gear.
> > >
> > > I'd like to increase power considderably.
> > >
> > > I am thinking that my most obvious choices are;
> > > get a bigger stepper,
> > > add a jackshaft and another timing belt set
> > > switch to a gear motor
> > > add a worm gear.
> > > change down feed to a ball screw or something.
> > >
> > > I've been looking at gear heads for Oriental motors, but they seem
> > > like they are for AC motors, not steppers.
> > >
> > > I am limited on space, could use a NEMA34 triple stack. I am
> > > wondering if I would then need to switch out from the XL belts?
> > > (my 50 tooth L gear is HUGE ! so that is not real attractive)
> > >
> > > any suggestions ?
> > >
> > >
> > >
> > >
> > >
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> OFF Topic POSTS: General Machining
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> 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
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