Re: ball screw or belt drive?

Name??? It's Jeff,

I am trying to design a something without alot of slop, key word
trying. I'm not looking to have perfection, just close enough for what
I'm trying to accomplish with it.

Is a ACME screw considered a ball-screw? or does ACME make a ball-screw?

I'm still trying to figure out what size steppers to use on my XYZ
table. I don't want to underpower/overpower my choices. I found some
125oz/in Size #34 @ 200 s/r for $25, they are used.

I was thinking of using timing belts for the X-Y axis and a ball-screw
for the Z axis. Still doing a price comparision between the two.

I will look into the rolled ball screw at the company you mention.

Thanks.

--- In CAD_CAM_EDM_DRO@y..., JanRwl@A... wrote:

> zbadone: You have a NAME?
>
> Think BALL-SCREWS! For the smallish WW machine you describe, ACME with
> Turcite preloaded nuts might do, if you use at least #23 bipolar
steppers, or
> #34. But I'd go with 3/4" dia. ball-screws with at least 0.2"/turn
pitch, if
> not 0.5"/turn!
>
> You do NOT have to use clean-room-ground screws! Rolled ball-screws
will do.
> See Ball Screws & Actuators (company) in San Jose, CA. (sorry, no
further
> address).
>
> Lotsa luck. Jan Rowland, Troll