Re: greetings

--- In CAD_CAM_EDM_DRO@egroups.com, Ray <rehenry@u...> wrote:

> >
> > Message: 16
> > Date: Mon, 18 Sep 2000 04:08:11 -0000
> > From: "Alvaro Fogassa" <fogassa@p...>
> > Subject: Re: greetings
> <snipped>
> >
> > Ray,will that be a zero backlash ballscrews?I just finished the

retro

> > on mine and had the same idea on a "kit" to retrofit the

minimill.the

> > good thing about using ballscrews is that ones can use smaller
> > motors.I'm using size23 motors rated at 80oz direct drive.
>
> Let's talk cooperation. Perhaps we should take some of the details

off

> list although we don't plan on being proprietary with this

project.

>
> We plan on using some oversiize nuts for the McMaster Carr 5/8.

This

> gets backlash ~0.001 which the EMC and I suspect most other

controllers can

> handle without getting quirky.
>
> The motor info is good news. What kinds of control and amps are

you using

> and what rapid speed do you get with them?
>
> Ray

I'm using zero backlash nuts and screws from technoisel on xyz 16mm
X5mm pitch (aprox.5/8"X.200").camtronics driver(2amp)running
at .5amps/fase on x and y and 200oz motor on z axis running at 1amp.
I can't hold the table with my hands when it's moving at 100"/min.
It can do 300ipm on a single axis but it's so fast that I'm afraid
running this way.(run out of travel very fast.)
i don't have the gas shock hooked up yet,so every time i turn the
controller off I tight up the locks,otherwise the headstock speeds up
down by itself.
the y x and z tables needs to be machined to clear the nuts.
it would run really nice with a gecko microsteper.I'm planning to
upgrade it to servo controllers from gecko.