Re: [CAD_CAM_EDM_DRO] Stepper vs. Servo

Hi Doug
what is the price of 200 oz/in and 300 oz/in stepper?
i want to purchesed amd make cnc milling. now i m estimating of this.
thanks
Shabbir
icq 115198417



****************At 04:27 AM 6/23/01 +0000, you wrote:

>Anyone build a gantry flame cutter?
>
>How do you deal with arcs and corners?
>
>Do you use constant feeds or varying feeds?
>
>I'm building a large gantry flame cutter. The work envelope is approx.
>65"x65".I've tried 5A camtronics drives and achieved 1000ipm rapids
>with 150oz/in nema 34 motors. Feeded moves below 100ipm become very
>cogy, and create excessive vibration. Tried gecko g201, and got
>1000ipm rapids and very smooth feeded moves down to 10ipm.
>
>I've got dozens of various nema 23,34 motors from 50oz/in to 450oz/in.
>Assuming I settle on an approprite sized motor, and can assume that
>lost steps will not be a problem.
>
>What would be the advantage of using servos and gecko 320/340s?
>
>Doug