Re: How do you figure steps/inch with a servo?

Jeff,

It's 800 times 5 times 2, or 8,000 steps per inch. 800 step pulses
move the motor 1 revolution, 2 revolutions of the motor turns your
screw once, it takes 5 revolutions of the screw to move 1".

Mariss

--- In CAD_CAM_EDM_DRO@y..., "jeffdavis516" <cadman@p...> wrote:
> Now that I have the Z axis working in my mill. I am trying to set
> the system so that if I tell the computer to move one inch, it will.
>
> I have servo's with 200 CPR encoders on them. I guess this give me
> 800 counts in quadrature (what ever that means). I have 5/8 .200
> pitch ball screws. and a 2:1 ratio pulley setup.
>
> Can anyone help me figure out the number I put in CNCPro for "steps
> per inch"? I know it must be close to 10,000 because that gets me
> close.
>
> Thanks
>
> Jeff