Re: [CAD_CAM_EDM_DRO] Motor torque to linear force conversion?

Chris,
Thanks alot! I get it now.
/Henrik Olsson.

----- Original Message -----
> Think of the screw as a pulley with radius = lead/6.28 or about .64mm
> Your 400 oz*in is 400 ounces at the surface of a pulley with 1 inch radius
> Do the proportion: force*radius = force*radius
> 400oz * 25.4mm / .64mm = 15875 oz
> 15875 oz * .028 kg/oz = 444.5 kg, which is not a force unit, but
> 4356 N is. (Or in the units of my culture, we're talking ~1000 lbs)
>
> (Another way of thinking of it: a 1 in pitch screw exerts a linear
> force 2pi times its oz*inch torque. This screw has a lead 6.35 times
> that. So the force is 400oz * 6.28 * 6.35 = 15951 oounces (yes, there
> were roundoff errors in the first calculation)
>
> Chris