Re: [CAD_CAM_EDM_DRO] Ball screw pitch question please

Hi Steve

Almost all of the controller software packages have no problem with
differing ballscrew pitches or gear reductions--it's just a matter of
entering the number of steps per inch or mm.

Bob

----- Original Message -----
From: "sf7108" <sf7108@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Wednesday, April 13, 2005 9:15 AM
Subject: [CAD_CAM_EDM_DRO] Ball screw pitch question please


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> Hello all,I have been lurking for a while and now I have a question
> that I hope someone has a answer to my concern.I have been building a
> bench top CNC from whatever I can machine plus parts from e-bay and
> parts I find.Basic concept of what I have is Thomson rails and ball
> screw on Z axis with .2 pitch per rev,and on X&Y,the same Thomson
> rails,but with .5 pitch per rev.How will the controller(which I don't
> have yet,nor have any idea of what to choose including motors)
> understand the pitch differance's so that it can operate properly.I'm
> still trying to put a spindle together at the moment,so all I have
> now is manual axies until I select my servo's or steppers.It's
> roughly 16" X,8" Y,9" Z travel machine.I hope I haven't shot myself
> in the foot by not getting common pitch screws:(
>
> Regards,Steve
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