Re: Z axis force

>
> 100 volt servo, 2500 RPM. 64 VDC supply. 64% of 2500=1600. 1600/2.5

reduction =640 / by 10 revs per inch=64 ipm. What it does.

>

Sorry, i used 2500 rpm...you are right.

Wally




--- In CAD_CAM_EDM_DRO@yahoogroups.com, R Rogers <rogersmach@y...>
wrote:

>
>
> cnc_4_me <cnc4me@g...> wrote:
>
>
> With the .1 lead on your acme it is aprox = to a .2 lead ballscrew
> for force needed...And it didn't cost you anything...
>
> with your setup, acme screw and .1 lead, and a 1000lbs. It takes
> 31.85 in-lb to move the table, this does not include acceleration.
> And you have 25.6 lb-in x 2.5 reduction = 64 in-lb available.
>
> So yes. i can see were this would work, your only limiting factor

is

> acceleration, after that it would be RPM. With 2500 RPM servo
> and .1" lead and 2.5-1 belt. You should get 100 IPM rapid on your
> knee...
>
> 100 volt servo, 2500 RPM. 64 VDC supply. 64% of 2500=1600. 1600/2.5

reduction =640 / by 10 revs per inch=64 ipm. What it does.

>
> Wally
>
>
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, R Rogers
> wrote:
> >
> >
> > cnc_4_me wrote:
> >
> > I am getting posts mixed up...Tell me again, what machine do you
> have
> > and what weight are you saying knee is...
> >
> > Wally
> >
> >
> >
> > --- In CAD_CAM_EDM_DRO@yahoogroups.com, R Rogers
> > wrote:
> > > Its an acme screw on Z.
> > >
> > > cnc_4_me wrote:
> > >
> ////I'm running a 100 volt 13.7 continual amps servo rated at 40

lb -

> in
> torque rating with a 64 VDC supply. Using the above calcualtion,

I'm

> only
> getting 64% of the stated torque. Which is 25.6 lb-in. It drives

the

> Z at 60 ipm
> just as Ajax claimed a 40 lb-in motor would at full voltage.
> Calculations and
> theories aside, it works. Remember,the knee table and vise weigh
> approximately 800 lbs. then add a few hundred pounds force of a
> drillbit
> plunging steel. The little Gecko320 tolrates this, much to my
> amazement. ///Ron> >
>
> /// Also, The servo is 2500 RPM. 2500 X 64% = 1600 RPM divided by

10

> revs per
> inch on the Z axis = 160 divided by 2.5 belt reduction= 64 ipm.
> Exactly, what I
> can achieve. Ron///
>
>
>
>
>
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