Re: [CAD_CAM_EDM_DRO] Re: Gecko + Servos + Taig Mill

Dan

If you don't post the picture to the files area would you please send it
direct.

Thanks, Jeff jdemand@...

At 07:07 AM 03/26/2001 -0800, you wrote:

>One of the big reasons that makes a sherline/taig nice is the .050 pitch
>leadscrew. You get enormous mechanical advantage with the stock leadscrews.
>On the sherline mill I added a servo motor with 200 CPR encoder and
>directly coupled the motor shaft to the leadscrew. I measured the speed of
>the table at 72 IPM which is really to fast for a sherline. The reason I say
>that is because at 72 IPM the motor was running at 1440 RPM. The Sherline
>doesn't use radial bearing in their end plates however the motor that I plan
>to add to my products list will have ballbearings on the driven end. With
>direct drive I measured the axial force at over 25lbs.
> At this force you would have deflection of the Z axis so cutting speeds
>would have to obviously be less unless cutting a very soft material.
>If there is interest I can take a picture of the sheline with the servo
>motor mount setup and email it off line to those interested.
>Dan