Re: [CAD_CAM_EDM_DRO] Max stepper speed (Sherline)

XYLOTEX DRIVE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

I cannot stress this enough. The performance increase over the Camtronics
driver is AMAZING.

I have no idea what type of 180 oz-in steppers I have since Dan at
Camtronics was nice enough to remove all labeling. Presumably so that I, or
anyone else, could not purchase them directly from his source. They are too
short to be triple stack, I am guessing.

Daniel J. Statman, Statman Designs
www.statmandesigns.com
dan.statman@...

----- Original Message -----
From: "forumtvm" <forumtvm@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Saturday, March 08, 2003 10:49 AM
Subject: [CAD_CAM_EDM_DRO] Max stepper speed (Sherline)


> "IMService" <imserv@v...> wrote:
> Check out this chart:
> >http://www.empiremagnetics.com/global_pages/torque_charts/calc_st_tor
> q_U21.htm
> >
> > They have graphed the torque curves for a stepper motor at various
> > supply voltages. Note on the top chart (2 amp motor), curve #2.
> At 5 rps (revolutions per second)
> > the torque drops from over 50 to around 17.
>
> "Daniel J. Statman" <titanium@c...> in Sherline group wrote: "I am
> using TurboCNC with a 75 MHz Pentium 1 computer running DOS. I have a
> 26VDC power supply connected to a Xylotex drive running NEMA 23 180
> oz-in stepper motors (200 step per revolution) running in 1/8th step
> microstepping mode."
>
> I am using the Sherline 9.7 kg-cm (134 oz-in) stepper, camtronics 2A
> driver, 36VDC supply, and steppers stalling badly at 16-18 ipm, and
> greedy for more.
>
> Hope Statman is reading this post. Is the 180 oz-in stepper a triple
> stack? A 180 oz-in stepper is only a 34% improvement over my 134 oz-
> in, which proportionately will be 24 ipm, so there must be something
> I can do to improve the performance.
>
> What can I do to get the Statman kind of performance?
>
> Peter
>
>
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