Re: [CAD_CAM_EDM_DRO] Re: RE Mariss servo Motors
Posted by
marble here
on 2000-11-22 20:33:34 UTC
Thank you Mariss I will do it in the am at work and
let you know how it goes .I gather that your drivers
will work on these servos right .
--- Mariss Freimanis <geckohall@...> wrote:
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let you know how it goes .I gather that your drivers
will work on these servos right .
--- Mariss Freimanis <geckohall@...> wrote:
> Hi,__________________________________________________
>
> John, if you don't mind doing a little math and some
> careful
> measurements, here's how you can characterize your
> motor.
>
> What you are looking for is your motor's stall
> torque.
>
> 1) Measure the armature resistance.
> 2) Measure the no-load speed at rated voltage
> (30VDC)
> 3) Use the following equation:
>
> T = (1352 times V squared)/(2R times S)
>
> Where:
>
> T=Stall torque in in-oz
> V=Power supply voltage
> R=Motor armature resistance in ohms
> S=Motor's no-load speed in RPM
>
> The accuracy of the results depends on how
> accurately you measure the
> armature resistance (most important) and how
> accurately the no-load
> speed is measured.
>
> As they say in car commercials regarding miles/gal
> "your results may
> vary"
>
> Mariss
>
>
>
> --- In CAD_CAM_EDM_DRO@egroups.com, "John
> Brauweiler" <marble_h@y...>
> wrote:
> > Last week I told all about the calcomp I got, well
> it is almost
> apart
> > what I need now is to find out the OZ rating on it
> .Would anyone
> > knowwhere I can get some infomation on a Hathaway
> Servo Motor . I
> > sent an e-mail to Hathaway and received no
> reply,They are 30 volt
> > servos . I do know that the servos will take 15lbs
> of pulling force
> > before the overload kicked out on the Calcomp I
> used a pull scale
> to
> > see when the servo's would kick ,Yes I know not a
> good way of
> > checking but what the heck right .Almost like the
> sand and cup
> > Thanks group
> >
> > John
>
>
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