Re: [CAD_CAM_EDM_DRO] RF-45 Retrofit

In a message dated 08/18/2000 10:16:56 AM Hawaiian Standard Time,
tmay@... writes:

<< A question for Dan Falck or Roland Friestad about their retro-
fit's of the Rong Fu RF-45 mill.
I'm starting to make my ballscrew installation and I'm wondering
if you made any kind of bearing block to support the inside end of
the Y-axis screw, or left it free like the lead screw in the original
design? I would think ideally, supporting it would be best, but it
might be a lot of work and I don't know if it is worth the effort for
a short screw like this? I'm not even sure you could get enough
access to install the screw if it has a bearing on that end?
Thanks
Terry May >>

Terry,

I just measured my RF-45 and will not be supporting the out board end of
the Y axis screw. I may end milling the slot bigger in the base casting to
allow the ball nut a bit more clearance. Guarding against contamination will
be fun however. I will make an adapter to fit the existing y axis nut mount.
The x axis nut will be bolted into the existing pad.

PS Even if we were to run at 600 IPM, the distance on y is so small (8 or 9
inches?) it'd never get up to speed. X and Z will need the support.

Peter
THRD, Inc.