Torque Units-WAS Re: What makes a motor a s ervo? calculating power

LOL! Andy, you make me laugh. I hope you keep posting often!

Bloy

P.S I'm gettin' there too!

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Andy Wander <awander@v...>
wrote:

> When you get up in years, you start to repeat yourself-that's my

excuse, and

> I'm stickin' with it!
>
> Andy Wander
> Verrex Corporation
>
> -----Original Message-----
> From: Alan Marconett [mailto:KM6VV@a...]
> Sent: Wednesday, May 11, 2005 7:01 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: RE: [CAD_CAM_EDM_DRO] Torque Units-WAS Re: What

makes a

> motor a servo? calculating power
>
> HI Andy,
>
> Yeah, I think you've said that before! Then why not oz*in, or

oz.in? They

> aren't SUBTRACTED either!
>
> It took me a few years to get when they swapped it from in/oz, and

now you

> want me to change again? ;>)
>
> Alan KM6VV
> P.S. Well if that was the only mistake I ever made, I'd be happy!
>
>
> > -----Original Message-----
> > From: CAD_CAM_EDM_DRO@yahoogroups.com
> > [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of Andy Wander
> > Sent: Wednesday, May 11, 2005 12:12 PM
> > To: 'CAD_CAM_EDM_DRO@yahoogroups.com'
> > Subject: RE: [CAD_CAM_EDM_DRO] Torque Units-WAS Re: What makes a

motor a

> > servo? calculating power
> >
> > At the risk of being labeled as "picayune", I will repeat:
> >
> > It is NOT oz/in, it is OZ-IN or IN-OZ>
> >
> > They are MULTIPLIED, not DIVIDED!
> >
> > Had to get that off of my chest........
> >
> > Andy Wander
> > Verrex Corporation
> >
> > -----Original Message-----
> > From: Alan Marconett [mailto:KM6VV@a...]
> > Sent: Wednesday, May 11, 2005 2:48 PM
> > To: CAD_CAM_EDM_DRO@yahoogroups.com
> > Subject: RE: [CAD_CAM_EDM_DRO] Re: What makes a motor a servo?
> > calculating power
> >
> > Thanks Mariss,
> >
> > I didn't find it, but the stepper is probably 550 oz/in?
> >
> > Interesting, but not surprising that a servo is about 2X more

powerful for

> > its size/weight. I'd noticed that steppers seem to be bigger

for the same

> > power (building robots). More wattage in a smaller/lighter

package

> > because...?
> >
> > If I take half of 170 oz/in for the servo, then about 85 oz/in

servo

> > (possibly less) would be similar to a 550 oz/in stepper in

machines they

> > could drive (gearing needed for servo).
> >
> > Can I assume that the "300 Watts" printed on my servos is

continuous? I

> > don't have them in front of me, and I didn't find them on a

Google search.

> > Target machine is an RF-31 mill. The 1000 (or was it 2000) line

encoders

> > on
> > them are over kill, I'll have to reduce that. Or does one of

your new

> > servo
> > drivers do that for me?
> >
> > Thanks for the comparison.
> >
>
>
>
>
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