Re: [CAD_CAM_EDM_DRO] Re: Servo controllers for table top machines.

As Mariss mentions, servo motors like to turn faster than steppers.
Ideally you want belt reduction. The other alternative is to use a motor
with enough torque to directly drive the screw. This is often done on
industrial machines. Your machine will probably end up capable of silly
rapid speeds but you don't have to use all of the available speed.

A smaller motor will of course be cheaper then a big motor. However when
when you figure in the cost of the belts/pulleys and labour you will
probably find that overall a bigger motor will be cheaper.

Les

enytned1 wrote:

> "It trades speed you can't use for torque you can." What??????
>
> I was under the impression I could just bolt on the brush type servo
> motors directly to the ball screw end, similar to the way my stepper
> motors are connected currently.
> How do DC-servo motors with 500CPR encoders with Gecko 320drives
> compare to a micro stepping motor and driver in terms of
> repeatability, precision etc?
>
> The old techno controller I use was originally setup for full step
> mode I have changed this to half step mode and have seen an immediate
> improvement. How reliable are these controllers you mentioned? I
> know I can get a 4-axis upgrade from Techno for about $3500.00 but I'm
> not sure if I can convert it to run of Mach3?
>