RE: [CAD_CAM_EDM_DRO] Re: Why is my feedrate slow with stepper motor

I found the hiccup in my data stream.

I'm using K-Kam-3 - windows based software. The software provides a
screen readout of position and plots the tool path in real time with
the output to the printer port. There is a setting to disable position
update. I tried it and my hiccup went away!. I'm now able to get
about 3.5 IPM before torque falls off and I loose steps. (Up from 1.5
IPM).

That Identified I can now work on increasing voltage in my L/R drive
circuit - plan to push to about 42 volts. This I can do quickly.

I'm on a limited budget so a chopper circuit and new motors (bi-polar)
will need to wait for a home made solution.

Thanks to all for the useful input.

Roger Nicholas
Akron OH



On Saturday, March 23, 2002 7:55 PM, Jon Elson
[SMTP:elson@...] wrote:

> lenskeeper2000 wrote:
>
> > I think the hitch in my data stream is what I need to clean up
> > first
> > as it could derail any other improvements. I put an old
> > ocilloscope
> > on the timing puls to the driver and can see the hitch - shows up
> > as
> > a reversal in the wave pattern every so often.
> >
> > would a faster computer help? I've tried 133 and 200 Mhz pc's but
> > maybe these are still to slow to overcome interrupt delays.
>
> I doubt it. It might get less significant, or move to higher speeds,
> but I
> would expect it is still there.
>
> Jon
>
>
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