Re: [CAD_CAM_EDM_DRO] Re: Re: Belt vs. Direct Drive

Jon,
sorry for a late reply - was so overwhelmed by the figures, took some
time to get back to normal.
I can see this as a viable business opportunity - to get half decent
machinery somewhere, retrofit it and sell for big buxes! For example
our local Busy-Bee has a Bridgeport -type floor mill on sale for $3200 Cdn.
I almost bought it. Can be retrofitted and resold at competitive price for
CNC.
Alex

----- Original Message -----
From: Jon Elson <elson@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Monday, January 06, 2003 2:15 AM
Subject: Re: [CAD_CAM_EDM_DRO] Re: Re: Belt vs. Direct Drive


>
>
> alex wrote:
>
> > Jon.
> >Yes, anti-backlash screw should make it very rigid - so probably I will
go
> >this root.
> >I checked your products and they seem to represent a great value for the
> >money.
> >Its amazing what people can have now for a few hundred dollars. I was
> >looking
> >at the recent KBC tool flier - Basic milling machine is $6,625 Cdn.
> >The same machine with 2 axis CNC - $25,000 Cdn. I think, using your
staff,
> >the same
> >conversion can be done within $10,000 Cdn. Not a bad saving!
> >
> >
> Unless you want high-resolution linear scales, I think you can do this
> for a LOT less than 10 K,
> even those smaller Cdn $! The ballscrews will be the most expensive
> part, probably. In US $,
> these run somewhere between $800 and 1200, I think. You should be able
> to find decent encoders
> for about $100 ea. with a little looking, sometimes much lower on eBay.
> Servo motors should
> be available surplus under $100 ea. Expect $250 or so for pulleys and
> sprockets. Gecko Drives
> are under $200 ea. My stepper driver board is $200. So, that comes to
> something like US $2600
> for a 3 axis conversion. Depending on how good a scrounger you are, you
> might even be able
> to do better.
>
> Jon
>
>
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