Re: [CAD_CAM_EDM_DRO] Re: Nema 23 Brakes for servo or stepper motors

A few weeks ago I built a 3 axis servo system for a guy with one of the
Techno Isel routers. We decided that removing the brake and replacing it
with a 2/1 ratio timing belt drive would be simpler. If you planned to use
G320 servo amps and you wired up the err/res so that any axis that faulted
would cause all three to fault could also cause the Z axis to backspin and
drop the rotating spindle onto the table. The 2/1 ratio should prevent the
backspin.
Dan Mauch
low cost stepper and servo motors.
cases for Gecko drives
kits and assembled 3-4 axis drives
www.camtronics-cnc.com
www.seanet.com/~dmauch

----- Original Message -----
From: "enytned1" <alexkcpr@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Thursday, October 26, 2006 4:38 AM
Subject: [CAD_CAM_EDM_DRO] Re: Nema 23 Brakes for servo or stepper motors


> Screw pitch is 5mm. This is on a Techno isel router. The brake is
> engaged when the power is turned off to the machine to prevent the
> head from droping all the way down.
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