Re: [CAD_CAM_EDM_DRO] Re: BP Power supply

Hi Keith,

If you want high speeds and are buying motors and drives I would
seriously recommend servos rather than steppers. Steppers are OK for
small jobs but not ideal for a big machine like a Bridgeport. I only
used steppers on mine because they were already fitted and I can't
justify the cost of changing the motors.

I can't understand why you are only getting 20IPM. My machine with
original steppers and Geckos at 75V will quite happily rapid at 100IPM.
Are you sure you aren't getting either noise problems or pulsing
problems from your computer? Have you tried another computer and/or
different software package e.g TurboCNC?

Try feeding the step pulses into a pair of headphones. You should hear a
smooth whistle that changes pitch as the speed changes. If you hear
clicks, buzzes or crackles in the whistle you have software pulsing
problems.

Les


Keith Clark wrote:

>
> The sad thing is all this for me is that I bought new stepper motors
> this week at about $1800.00 and they do exactly the same thing the
> old motors did with maximum rates of only 20 ipm. Seems to be the
> Gecko drivers and I may have to break down and spend another $1000
> on Anaheim Automation microdrives.
>
> If you want the scans of the motor wirings just email me at
> clarkfamily5@..... (remove the last 2 periods) and I will send
> it to you.
>
> I hope this is of some help to you!
>
> Keith Clark
>