CAD CAM EDM DRO - Yahoo Group Archive

RE: [CAD_CAM_EDM_DRO] Bridgeport mill ballscrew conversion

Posted by R Rogers
on 2005-04-18 22:19:12 UTC
Sure they are. That is per foot and its a tolerance not a guarantee to be out that much. I need to get out some ground standards and check these that I have. I'm thinking there isn't going to be much of an error. If they touted .001" error tolerance per foot, nobody would buy the ground screws that they sell also. Alot of companies market things that way. Even if they are out that much over a foot. Divide that by 12 and thats how much they'll be out in an inch, if the accumaltive error is consistent throughout 12". .00025" error in an inch is more than any Bridgeport could hope to hold anyway with cutter deflection etc. They are good screws for a Bridgeport.

Ron

"George Taylor, IV" <gtaylor@...> wrote:

>Ron,

>I was looking at the Rockford conversion. Their spec is
>.003 for the (rolled?) screws. Is this acceptable for
>precision work like linear interpolation and thread milling?

>George



-----Original Message-----
From: CAD_CAM_EDM_DRO@yahoogroups.com
[mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of R Rogers
Sent: Sunday, April 17, 2005 6:32 PM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: Re: [CAD_CAM_EDM_DRO] Bridgeport mill ballscrew conversion


Yes, Rockford ballscrew kit. Takes about two hours to swap out and they
are a very nice ballscrew assembly. About $650. Has everything one needs
for the upgrade.
Ron

john_glynn57 wrote:


Has anyone upgraded an old Bridgeport milling machine with a leadscrew
to a ballscrew drive and if so what strategy did you use.





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@...,
timg@...
Moderator: pentam@... indigo_red@... davemucha@...
[Moderators]
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


Yahoo! Groups Links









[Non-text portions of this message have been removed]



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@...,
timg@...
Moderator: pentam@... indigo_red@... davemucha@...
[Moderators]
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


Yahoo! Groups Links












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@..., timg@...
Moderator: pentam@... indigo_red@... davemucha@... [Moderators]
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


Yahoo! Groups Links









[Non-text portions of this message have been removed]

Discussion Thread

john_glynn57 2005-04-17 15:16:25 UTC Bridgeport mill ballscrew conversion R Rogers 2005-04-17 15:32:12 UTC Re: [CAD_CAM_EDM_DRO] Bridgeport mill ballscrew conversion Jon Elson 2005-04-17 20:06:06 UTC Re: [CAD_CAM_EDM_DRO] Bridgeport mill ballscrew conversion George Taylor, IV 2005-04-18 21:33:43 UTC RE: [CAD_CAM_EDM_DRO] Bridgeport mill ballscrew conversion R Rogers 2005-04-18 22:19:12 UTC RE: [CAD_CAM_EDM_DRO] Bridgeport mill ballscrew conversion George Taylor, IV 2005-04-19 18:16:36 UTC RE: [CAD_CAM_EDM_DRO] Bridgeport mill ballscrew conversion R Rogers 2005-04-19 18:35:25 UTC RE: [CAD_CAM_EDM_DRO] Bridgeport mill ballscrew conversion