On 7/31/2011 8:39 AM, Rod wrote:
>
>
>
> --- In gingery_machines@yahoogroups.com
> <mailto:gingery_machines%40yahoogroups.com>, Ron Thompson <ron@...> wrote:
> >
> > On 7/31/2011 12:43 AM, Rod wrote:
> > >
> > >
> > > It's the tail wagging the dog. My need is for tapered elliptical
> > > mandrels to form bezel and prong settings. After years of searching
> > > and no joy, this is my latest attempt.
> > > <http://www.youtube.com/watch?v=xAoM-CRZBNY>
> > > Feel free to make comments, suggestions and improvements and by all
> > > means make one for your shop.
> > >
> > > Rod
> > >
> > That seems like the long way around the block, to me. CNC can cut
> > anything you can draw. A few stepper motors, drivers, and Mach3...
> >
> > --
> >
> >
> > Ron Thompson
> > On the Beautiful Florida Space Coast, right beside the Kennedy Space
> Center, USA
> >
> > There are two kinds of posts on newsgroups.
> > 1. This is what I have done...
> > 2. This is what I think...
> > Be aware of the difference!
> >
> > http://www.ourcadguy.com/
> >
> > http://www.plansandprojects.com My hobby pages are here:
> > http://www.plansandprojects.com/My%20Machines/
> >
> > Visit the castinghobby FAQ:
> > http://castinghobbyfaq.bareboogerhost.com/
> >
> >
> >
>
> Ron
>
> The three considerations that put the kibosh on CNC are cost, space
> requirements for a machine that's not a toy, and the learning curve.
>
> That being said, my preference is for servos because they are much
> less likely to lose a step. Our ANA Express has servos and runs much
> faster than other cutters we've had that had steppers. My POS Sherline
> mill has steppers and is seldom used.
>
> If you have any specifics about a lathe that has a CNC controlled
> compound for the tool holder, please enlighten me. My search for such
> a device turned up empty.
>
> Thanks
>
> Rod
>
>
Sure. It's called a mill. I bought a Taig cnc ready, and a gecko G-540
control box w/steppers already wired for just under $1800. I added an
old desktop "closet queen" computer for $50. I already had a license for
Mach3, but that's about $175 last time I looked. 2 grand, all in, and it
fits on a desktop.
Alternatively, you can add live tooling to a lathe.
But you don't even need that for a special built machine, like you have
here. Add the steppers to what you have instead of the specially
machined parts. Call your spindle a 4th axis and add an index pick up so
Mach will know where it is, and put the live tooling on an X-Y table. A
couple of $50 steppers and a couple of Gecko G-251 driver @ ~$60 each. A
$25 breakout board, $40 power supply, and an old computer...
Scads more capability for about the same amount of work. Turn a diamond?
No problem. Or anything else you can draw or define. How about making it
cut a 3D cameo?
I do like your creativity!
--
Ron Thompson
On the Beautiful Florida Space Coast, right beside the Kennedy Space Center, USA
There are two kinds of posts on newsgroups.
1. This is what I have done...
2. This is what I think...
Be aware of the difference!
http://www.ourcadguy.com/
http://www.plansandprojects.com My hobby pages are here:
http://www.plansandprojects.com/My%20Machines/
Visit the castinghobby FAQ:
http://castinghobbyfaq.bareboogerhost.com/
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