Re: [CAD_CAM_EDM_DRO] Re: mill drill conversion

We use the Camtronics servos on a mill drill sized mill with 5 TPI
direct drive ballscrews. They are very good. The only issue we have
with them is that they only run 900 RPM at 40V. We'll probably increase
the supply voltage to 80V to get more speed from them. Note that 900RPM
with a direct drive 5 TPI ball screw is still 180 IPM, theoretical. We
are seeing 150 IPM in use.

Kim

On Wed, 2003-09-10 at 13:21, Torsten wrote:
> >
> > I will be replacing the ACME screw with ball screws .2 lead. I
> > would really like to be able to cut wood and plastic at 60ipm max
> > and rapid around 100ipm. I would also like to cut Aluminum and
> Steel
> > (much slower). I currently have 3 servo motors peek torque of
> > 430oz_in 1700rpm I am using Gecko G320 drives. I am tempted to
> sell
> > my motors for 600oz_in motors 900rpm found on Camtronics web site.
> > I need some advice form someone who has practical experience.
> > Thanks for the help. I am in need of it.
>
>
> Dose not seam like a good trade to me.
> You could simply acount for more torque
> by modefication of your ratios.
> 430oz/in with 2:1 ratio would give you
> 860oz/in and a top of 850rpm.
> Seams close enough.
>
>
>
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Kim Lux <lux@...>