how to calculate acceleration

Hi,
Is there any formula that I can use to calculate acceleration of CNC
machine?

fortino

----- Original Message -----
From: "John Craddock" <John.Craddock@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Saturday, May 10, 2003 5:31 PM
Subject: RE: [CAD_CAM_EDM_DRO] Re: Conversion Of Mill to CNC (LONG)


> Mariss
> Are you sure you don't divide by the efficiency? Formula below gives
smaller motor for less efficient lead screw.
> John C
> -----Original Message-----
> From: Mariss Freimanis [mailto:mariss92705@...]
> Sent: Saturday, 10 May 2003 10:28 AM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] Re: Conversion Of Mill to CNC (LONG)
>
>
> (2) in-oz = (2.55 * Lbs * eff) / TPI where TPI is turns per inch and
> eff is the screw efficiency. Use .3 for a really crummy ACME screw
> and .95 for a really fine ball screw.
>
>
>
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