Re: [CAD_CAM_EDM_DRO] cheap high speed servo control

Graham,

Im not sure what accuracy and torque you are after, but couldn't you gear
the servo say 1:3 via pulleys?

Would this work?

See you.
Jason Cox

----- Original Message -----
From: Graham Stabler <eexgs@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Tuesday, August 13, 2002 8:18 PM
Subject: [CAD_CAM_EDM_DRO] cheap high speed servo control


> I am currently designing a coil winding machine for small hot air bonded
> bobbinless coils, one thing I would like is a servo motor as the spindle
> to allow good speed control as well as angular control at the start of
> winding. i.e. I want to be able to drive it quickly (up to 3000rpm) and
> then use it more like a stepper motor during wire attachment etc.
>
> The gecko drive units look good but would I be correct in assuming that
> the servo could not be run at speeds as high as 3000rpm? The max step
> rate is 250khz so I suppose it depends on the encoder.
>
> Are there any other fairly cheap drivers that might allow me to drive
> the motor both at high speed and in step mode? I will probably run the
> machine from a microprocessor which will be given winding constants (no.
> of turns etc) via a pc link.
>
> Sorry if this is as clear as mud.
>
> Graham Stabler
>
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