RE: [CAD_CAM_EDM_DRO] Re: Dyna-Myte 2400

The problem with the method in the link is that the original motors were
100 steps per rev and used the 10/1 ratio gears. The motor was able to
turn up at very high speed. If you build a motor mount like the one in
the picture from the below link then use a standard 2/1 ratio stepper
your speed will be half as fast as the original but will have more
power. I have a 2400 that I did a similar conversion on and am not
happy with the speed. When I get a little time I plan to replace the
steppers with a servo motor so I can get 30 IPM+.
Otherwise, mechanically those are great little machines much better than
the maxnc/taig or sherlines.
Dan

-----Original Message-----
From: aintknowwayzzsa <yonsi@...> [mailto:yonsi@...]
Sent: Friday, February 28, 2003 5:07 PM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Re: Dyna-Myte 2400


Details of a Dyna-Myte conversion can be found at www.route-a-
bout.com under the "how it started" link. Rick West designed the
motor mounts, his email is on the bottom of the main page.

timing belts and pulleys are the way to go. The original gears
are much to weak for a nema23 motor.


--- In CAD_CAM_EDM_DRO@yahoogroups.com, "William Scalione"
<wscalione@n...> wrote:

> I have an old Dyna-Myte 2400 CNC mill that has had the motors and

all

> electronics removed from it. It seems to be a pretty nice machine,

although

> somewhat small. Has anyone done a retrofit of one of these? I plan

on using

> servos and Gecko 320 or 340 drives. I believe the screws were

driven by the

> stepper motors through some sort of a gear arrangement, but since I

don't

> have the original parts, I don't know. Looks pretty straight

forward to

> build some motor mounts and drive the screws with timing belts and

pulleys,

> but I thought I'd ask in case someone knows some gotchas with these
> machines, or if someone has motor mounts allready designed they

would be

> willing to share.
>
> Bill

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