Re: [CAD_CAM_EDM_DRO] Brush DC servo not for contouring?

Jon..... I want to use the DC Brushless motor for my "Z" axis, it also has a
gearhead, I was hoping, since it is geared down, that it would help in
accuracy, and resistance, so the drive will not move when powered down.
Pitch of leadscrew is 8mm, 9" of travel.....

RC

----- Original Message -----
From: Jon Elson <elson@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Monday, April 08, 2002 11:16 PM
Subject: Re: [CAD_CAM_EDM_DRO] Brush DC servo not for contouring?


> kdoney_63021 wrote:
>
> > In a recent post to another news group I got the advice:
> >
> > "I presume you will want to countour with this machine,
> > possibly at fairly high feedrates. If so, stay away from DC
> > brush-type servos since most are limited to 2300 to 3500
> > RPM"
> >
> > Does this mean to contour I need high speed motors? To do general
> > high power milling and routing on a gantry, which type of motors
> > would be best.
>
> It depends on the motors, and the machine. Remember, the "pros"
> are running 1200 IPM, 10+ G's acceleration, 25+ Hp 25000 RPM
> spindles, etc.
>
> Depending on the drive mechanism, your motors may or not be required
> to turn at these rates. Tell us what drive you will use, and what
> maximum feedrate you expect to need. Then, we can advise.
>
> Jon
>
>
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