Re: [CAD_CAM_EDM_DRO] Re: mill drill conversion

I highly recommend ditching the belt on that conversion and using direct
drive. You might be happy with 100 IPM now, but why not have faster
rapids ? 2500 pounds of push is way overkill on a mill drill. 1000
pounds would be lots.

Kim

On Wed, 2003-09-10 at 10:49, Jon Elson wrote:
> jroark31 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.
> >
> If the 430 Oz-In is continuous, that will be more than enough. Even if that
> is the peak torque, it will likely be enough. 100 IPM requires 500 RPM
> on the screw, so a 3:1 belt ratio would still allow you to reach that speed.
> With 3:1 reduction, you get 430 * 3 = 1290 Oz-In at the screw. That
> is 80.6 Lb-In. That will produce 2535 Lbs of linear force at the machine
> slide! You say you need MORE than a TON?!!!
>
> Jon
>
>
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