Re: servo vs stepper

Hi Jeff,

Sounds like you've got it covered fine! and 131 IMP is plenty fast, for
my use!

I'm interested in a set of ball screws and bearings, if you are going to
offer them. What are the prices? Or your source?

Alan KM6VV


jeffdavis516 wrote:

>
> That is exactly what I thought as well. I'm not an electronic
> engineer so what does it mean "Continuous" and "Peak"? It sounds to
> me that the motor can change it's torque when needed (up to 430 oz/in)
>
> All I know is I don't have any problem running my Drill Mill. Have
> you looked at my movie on my web site?? In the last part of the
> movie my Mill is running that finish cut at 131 IPM!!!
>
> I machine at standard feed rates that are calculated by my cutter and
> the RPM of the spindle. I can't get real fast cutting feedrates
> because the Drill-Mill does not have a fast running spindle. Don't
> most CNC mills run the spindle at 5000 to 10000 RPM??? I know that I
> have pushed the feedrate too much and broken a 3/8 EM and the motors
> did not stall at all.
>
> Jeff Davis
> http://www.homecnc.info
>
> --- In CAD_CAM_EDM_DRO@y..., Alan Marconett KM6VV <KM6VV@a...> wrote:
> > Hi Jeff,
> >
> > Thanks. I would have thought you'd need more HP or continuous
> torque
> > then that. 1700 RPM and 50 oz/in continuous torque. What feed and
> > rapids are you getting? If I've read the label on my daisy-wheel
> > printer motors correctly, I can get about 85 oz/in torque, and I
> think a
> > similar RPM. So they're STILL a possible for a Mill/Drill
> conversion.
> > Anyone interested in my Minerta servos? I'd trade for some Gecko
> > G320/340's!
> >
> > Also I might be interested in a set of ball screws and bearings, if
> you
> > are going to offer them. I've got quite a way to go to be able to
> start
> > a retrofit. I'd like to get a set of Gecko's next.
> >
> > Alan KM6VV