Re: [CAD_CAM_EDM_DRO] Mixing ballscrew types?

Hi, a 5mm lead screw is still 5 pitch, and .25 to a rev is 4 pitch. Most
controls really want to know how many steps(or counts from encoder on
servo)per inch. one of my systems uses 20 pitch for z axis and a 4 pitch for
y and 5 pitch for x. I havent had any problems with that set-up. (small 3
axis mill). cul brian f.

----- Original Message -----
From: "bdrmachine" <bdrmachine@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Saturday, December 20, 2003 9:30 PM
Subject: [CAD_CAM_EDM_DRO] Mixing ballscrew types?


> I started to convert my old 14 x 40 lathe to cnc. I have two
> surplus (new) ballscrews. The one I have installed on the Y axis is
> a 17mm Dia, (5mm / rev) thread, the one I would like to use for the
> X axis is a 2.5in Dia, (.25 in /rev) thread. Is there any problem
> using a inch and metric screw in the same machine using EMC? Will a
> (1070 Oz in) stepper be large enough to direct drive my Y axis? How
> about a (1200 Oz in) for the X axis?
>
> Thanks
> Brian
>
>
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