Re: [CAD_CAM_EDM_DRO] Re: Servos and Controller boards

Hi,

I dont know the exact specs of the motors, all three are Maxon one is
RE035-071-34EAD200A swiss made LC8, if that means anything?

Another is maxon again, with the code 2332.968-56 236-200, the last one is
worn and i cant read the code on the side.
Not much help i know.

All three have small gear boxes one the end and two have shaft encoders.

I have seen a kit from Quasar electronics which lets you drive servos using
potentiameters, which might be usefull as a source of powered crossfeed for
a small lathe?!.

Nick

----- Original Message -----
From: "caudlet" <info@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Sunday, April 11, 2004 10:03 PM
Subject: [CAD_CAM_EDM_DRO] Re: Servos and Controller boards


> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "Nick Ibbitson"
> <pulseweld@d...> wrote:
> > Hi all,
> >
> > sorry if this is stupid question but can you build your own servo
> > controllers?, i mean is a there a circuit that can be home built.
> > I have a stepper motor system and am more than happy with it but
> have been
> > given several small-ish servos and it would be a shame not to use
> them, they
> > have shaft encoders already on them.
> >
> > Thanks
> >
> > Nick
>
> I don't think I would attempt to design, layout and build a servo
> motor controller. Because of the closed loop design there is a lot
> more to it than just twisting a motor with DC. How small-ish are the
> motors? Servos produce more torque for their size than steppers. Do
> you have any voltage or current specs?
>
> If these are brushed servo's Fred posted a link for his SV500 cards
> that will handle up to 5A motors and they are $65 each on quantities
> of 3. I don't think you can "stick" build them for much less than
> that even if you work for free.
>
> Here is part of Fred's post:
>
> <P>The DeskCNC Servo Drivers are the least expensive step and
> direction
> servo drivers:
>
> http://cadcamcadcam.com/index.asp?PageAction=VIEWPROD&ProdID=11
>
> They will drive brushed DC servo motors with encoders. The torque
> will vary with gear/belt reduction, but with the right motors will
> easily deliver 100 plus oz-in.</P)
>
>
>
>
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