Re: calculation of motor torque

You do realize that 30 cm/s is FAST in the area of 700 IPM.

30 cm/s = 1800 cm/minute

1800 cm per min / 1 cm per turn = 1800 RPM Which is a little
high for steppers.


1800 cm per min / 2 cm per turn = 900 RPM Which is ok for
steppers.

Someone else asked about acceleration, so I won't touch that, but
what is the length of your lead screw? If it's really long it will
cause you more problems than the mass your trying to move.

Thanks
Aaron Moss
www.IndusrtialHobbies.com

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Boris Mara¾
<boris.maraz@s...> wrote:

> Hello!
>
> Somebody have formula to calculate approximately how much torque

must have stepper motor to drive the router with 10mm/turn (or
20mm/turn) lead screw and to get speed around 30cm/second and the
weight of moving arch over table will be around 15kg. Is it possible
to do this with steppers or I must use servo motors.

>
> Thanks for your answers!
>
> Boris
>
>
> [Non-text portions of this message have been removed]