Re: Is Stepper Motor Size Relevent To Screw Size

Helo Aaron,

Thanks
for the suggestion. If I do that what would you think would be a
standard size motor I would use?

Thanks
Mike

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "industrialhobbies"
<admin@i...> wrote:

> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "surfbuilder2003"
> <mek0002@a...> wrote:
> > Hello, I am still researching everything and am now puzzled about
> > something. Do you get a bigger motor as your screw gets bigger?

Or

> > does it reach a certain point where you cant get a bigger motor

and

> > you have to start gearing it down? My table I am trying to build
> will
> > be 4' x 10'. Thanks for any info.
> >
> > Mike
>
> The biggest killer with increased screw length is rotational

inertia,

> ie something really long takes more power to stop and start. Plus
> supporting the screw becomes a problem.
>
> The 4' axis won't be a big problem but the 10'er will give you some
> issues under normal use.
>
> Suggestion:
> For the 10' axis fix the screw (rigidly secured on both ends) and

put

> the all the rotational and moving parts on the gantry. This way
> rotational inertia is minimized and you can go with a standard size
> motor.
>
> Thanks
>
> Aaron Moss
> WWW.IndustrialHobbies.com