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

Henrik Olsson wrote:

> Hi list,
> How do you calculate the linear force that a particular motor/leadscrew
> combination will provide? For example, if I use a 400oz/in motor
> direct-coupled to a ballscrew with 4mm pitch what would the actual force be?

Relatively simple. Motor is 400 oz at 1 inch radius, or 400 / 16 = 25 Lb-in
The 4 mm pitch screw is the same as a drum with a circumference of 4 mm,
with a string around it, so 4 mm = .15748", or a radius of .15748 / 2 Pi =
.025". (A lot of mechanical advantage here.)

So, 25 Lb-In / .025" = 1000 Lbs!

Jon