Re: [CAD_CAM_EDM_DRO] home-brew CNC lathe

When I try access it, getting a message"page not found"
Can you please repost the link?
Alex

----- Original Message -----
From: <JanRwl@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Wednesday, May 14, 2003 5:49 PM
Subject: Re: [CAD_CAM_EDM_DRO] home-brew CNC lathe


> In a message dated 5/14/2003 4:20:27 PM Central Standard Time,
> forumtvm@... writes:
>
> > http://photos.groups.yahoo.com/group/cad_cam_edm_dro/lst?.dir=/Home-
> > brew+CNC+lathe&.src=gr&.view=
> >
>
> I took the photos, and I admit, I am NOT a trained studio-portraitist! I
am
> not sure WHICH lead-screw you mean, the "X axis" or the "Z axis". So, I
will
> explain both:
>
> Due to the bad "posing" of the photo with the dust-guard door closed, you
> can't see the "Z-screw", but it leads from that handwheel on the far-right
> into the headstock, where the "Z stepper" is face-mounted on the
> inside-surface of the headstock's left face (1.5" thick 6061-T6).
>
> The "X lead-screw" is directly fastened to the shaft of the motor on the
> far-rear end of the saddle, and this is totally hidden by the tail-stock
> body. However, you can JUST see the outline of the TOP of this motor in
the
> third snapshot in this group, right behind the left end of the tail-stock
> body. That outline is the nearly-white, bright area, so intensely lit by
the
> working-lights above it.
>
> BOTH are Superior Electric bipolar KML092F07 steppers, driven by a Slo-Syn
> SS2000DP4 dual-driver-with-power-supply "box". Opto-isolator inputs.
Works
> fine, but VERY expensive. Were I to do this same machine again, I'd use
> Gecko G210 drives and my OWN power-supply!
>
> The lead-screws are 4 mm/rev. ACME with preloaded Turcite nuts by BSA.
>
> Questions?
>
> The little PCB drill in picture 1 of that group can drill a board so fast
> that I can be DONE with all the holes faster than attempting it by hand,
even
> when I include the time to measure and "type-in" the X-Y coordinates!
>
> Now, THAT uses surplus Size-23 motors and home-brew drivers made with a
> now-difficult-to-find 29HGA41 (or whatever) IC once made by Sigma, later
> G.I., but who knows, now! I haven't bought one in years. Long story!
>
>
> [Non-text portions of this message have been removed]
>
>
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