Re: Linear motors

We use a linear servo motor on one of our machines here primarily
for very accurate and fast acceleration and deceleration control.
They are very expensive.

> Message: 5
> Date: Mon, 07 Oct 2002 23:42:08 -0600
> From: Doug Fortune <pentam@...>
> Subject: Re: Linear Motors Reasonable for Home Shop?
>
> jonp154 wrote:
>>
>> I'm new to CNC and stepper motors. I'm building my first CNC machine
>> (a single axis SEDM from Camtronic's plan). Are there any advantages
>> of using a linear motor vs. a stepper motor? Are linear motors and
>> the controls reasonable for a new CNC builder? Thanks a bunch.
>
> I think linear motors are more or less unrolled stepper motors,
> and a bipolar motor controller should be sufficient to drive it
> (and therefore also all of the various parallel port gcode interpreter
> software should also be usable). This assumes Step&Direction type
> drivers and software...
>
> The advantage is huge speeds and accelerations. The disadvantage
> (perhaps) is lack of mechanical leverage (such as using a pulley system).
> Also a disadvantage is the cost, but I'm sure thats coming down
> slowly but surely.... if you find a deal be sure and let us know, OK?
>
> Doug Fortune
> http://www.cncKITS.com