Re: [CAD_CAM_EDM_DRO] Small Machine CNC

Hi Jeff,

Sounds like an interesting little machine! Can you post pix on the
files list? I and I'm sure many others would like to see what you've
done!

And I must agree with you, "Next one is going to be bigger and faster"
! I'm looking now for a "big brother" to my old Sears/Sherline mill.

Alan KM6VV



Jeff Demand wrote:

>
> I'm adding my contribution to the small machine list. CAD_CAM_DRO_EDM has
> been one of my major sources of information and I would like to thank every
> one for sharing their knowledge and aspirations.
>
> My machine is a Unimat SL mill/lathe conversion. Modifications include
> thrust bearings and homemade anti backlash nuts (a variation on the hot
> dog-hamburger style) on X and Y stock 1mm pitch lead screws. The Z axis
> has a worm gear operating the original quill mechanism, with gravity
> handling the backlash. Motors are an assortment of $5 surplus 23's,
> measured torque of 50 - 70 ounce inch. The controller is a L/R bipolar
> built from plans included with Dancam and a 36v supply, also good as a
> small space heater :-) A homemade worm gear cut with a tap and a motor from
> a floppy provide a rotary axis controled with a 297/298 controller.
> Using Cncpro it manages rapids of 300 mm/m for the table and 200 mm/m for
> Z. I use Amapi and Rhino with StlWork for 3D work and what little 2D I do
> is handled with Ace converter. I mill wax for investment casting jewellery
> models, with the lathe variation doing some metal work using the cnc as
> power feed and DRO. Over all I'm happy with the results, but the next one
> is going to be bigger and faster.
>
> Jeff Demand
> http://www.aztec-net.com/~jdemand