RE: [CAD_CAM_EDM_DRO] Re: Ball screws for CNC plasma cutters

Biggest problem with using screws for a plasma rig would be getting the top
speeds you need. Seem to remember talking to my friend and feeds for thin
materials can be over 100 ipm. If the table is very big it could take some
pretty massive screws to eliminate whip. Rack and pinion or direct belt
drive seem like a better way to go for this purpose.

Tim
[Denver, CO]

> I'm just wondering...I've seen plasma cutters in use. It
> appears to me any
> attempts to hold
> REALLY CLOSE tolerances seems to be a lot of overkill. I've
> never seen a
> plasma cutting torch
> yet that will cut a really smooth edge, hence the lack of
> necessity for
> holding close tolerances.
>
> With this though in mind, i don't see why a person couldn't
> use threaded rod
> for the lead screw?
> Manufacturing an "antibacklash nut for this would be as
> simple as placing a
> heavy spring between
> a couple of hex nuts which are trapped to prevent rotation.
>
> I've even seen commercial nuts (used on acme screws) made this way.
>
> Smoke
>
> FAQ: http://www.ktmarketing.com/faq.html
>
>