Re: [CAD_CAM_EDM_DRO] Servo torque test question

Jon,
Did you ever measure the amperage/voltage of your servos under different load/speed conditions? What is the max. volts you run
your motors at? What is max. speed on your mill's x & y axes? Nice stuff on your web site!
Bob



Jon Elson wrote:

> Robert Allen & Marsha Camp wrote:
>
> >
> > Did you put servos on a Bridgeport?
>
> Yes.
>
> > What size, or mfg. & model no.? What was the gear ratio?
>
> I used GE 1/8 Hp (continuous rating) servo motors, with the 1/8 Hp measured
> at 1725 RPM, a very good match for what I was doing. The belt ratio was
> 2.5 : 1, and I left it there. This was the axis drive arrangement on an
> Excellon PC board drilling machine. I added DC tachometers and replaced
> the resolver with a shaft encoder. I had 2 of these axis drives.
>
> Oh, don't worry about the part number, these are 30+ year old motors, and
> GE would charge you $1500 at least, because they'd assume you needed
> it for an $80,000 PCB drill that went down!
>
> > Who's drive did you use?
>
> I designed and built my own servo amps, because I didn't know what was
> available out there. They work very well, but I could have saved a year,
> and bought Copley servo amps for what I paid in parts.
>
> See it at : http://ascc.artsci.wustl.edu/~jmelson/Machining.html
> in the CNC section.
>
> Jon
>
> Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the discussion of shop built systems, for CAD, CAM, EDM, and DRO.
>
> Addresses:
> Post message: CAD_CAM_EDM_DRO@egroups.com
> Subscribe: CAD_CAM_EDM_DRO-subscribe@egroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@egroups.com
> List owner: CAD_CAM_EDM_DRO-owner@egroups.com, wanliker@...
> Moderator: jmelson@... [Moderator]
> URL to this page: http://www.egroups.com/group/CAD_CAM_EDM_DRO
> FAQ: http://www.ktmarketing.com/faq.html
> bill,
> List Manager