Re: Bishop Wisecarver linear slides

Lloyd:

To predict the maximum force, use the Hp and rpm to determine the
torque in inch-lbs:

torque = (63000 * hp) / rpm

Then divide by the radius of action at the cut (eg: for turning a
1" bar, it'd be about .5")

max downforce in lbs = torque / radius

You can use the hp from the motor, but for more realistic numbers
you can use the approximations for machining power based on the rate
of metal removal. I don't remember them off the top, except that
aluminum is about 1hp to remove a cubic inch per minute. Machinery's
Handbook has them IIRC.

So you pick a feed, material, and speed (rpm) - work with pi a bit
to find volume per minute removal, and then go from there to hp and
then force. It's pretty accurate up to a few hp and at conventional
machining rates.

Dave Kowalczyk
Everett WA
Author of TurboCNC --> http://www.dakeng.com/turbo.html

> ----- Original Message -----
> From: "Lloyd Leung" <lloyd@l...>

So my question is how force is being exerted to

> > the ways? Does anyone know how I can calculate this force?
> >