Re: [CAD_CAM_EDM_DRO] Ball Screw Options

I can give you a little insight on making your own very low backlash
nuts, as passed to me by Les Watts. Try
http://www.phillycast.com/products/inst-nut.pdf for further information.

Marv Frankel
Los Angeles

----- Original Message -----
From: "natchamp_87" <mark@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Thursday, November 14, 2002 8:38 PM
Subject: [CAD_CAM_EDM_DRO] Ball Screw Options


> Well, I've taken the plunge and purchased my mill for the CNC
> retrofit. I bought an older Bridgeport with an M head. It has a
> 9x32 work table and its perfect for me because I get the full 12" Y
> travel but the overall machine will fit in my garage much better than
> a full 9x42.
>
> Amoung other things, I'm trying to resolve is what I'm going to do
> for the ballscrews. I would really like input on what my options
> are. I've looked into the archives and am starting to get the angle
> of the dangle.
>
> 1) Is one option to install anti-backlash nuts on the existing stock
> screws? I've read about making/installing anti-backlass nuts but
> can't figure out if that applys only to ballscrews.
>
> 2) If I were to install new ballscrews and nuts what specs should I
> look for? Is 5 tpi the standard? How about the diameter?
>
> 3) If I do #2 above am I right in that I have 2 options, either buy a
> bolt in kit or buy the ballscrews and fabricate how the nuts attach
> to the table?
>
> 4) What do I have to do/consider for attaching the ends to my
> servo/stepper motors? Do I have to do any machining to them for this?
>
> I came across Nook Industries www.nookind.com. Has anyone used
> these? Are they the most cost effective ones? Is there such a thing
> as a cost effective bolt in? The only price I've seen is in McMaster
> Carr for @800 buckies. I sure wish I could do it for less. Any help
> greatly appreciated!
>
> Mark took the plunge
>
>
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...
> Moderator: jmelson@... timg@... [Moderator]
> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
sister site to the CCED group, as many of the same members are there, for OT
subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> bill
> List Mom
> List Owner
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>