Re: [CAD_CAM_EDM_DRO] Modifying an X-Y table
Posted by
sam sokolik
on 2003-08-31 22:27:26 UTC
did it.
This was really to test some steppers
http://www.electronicsam.com/video/VIDEO1.mpeg
http://www.electronicsam.com/video/VIDEO2.mpeg
http://www.electronicsam.com/video/VIDEO3.mpeg
http://www.electronicsam.com/video/VIDEO4.mpeg
they are 800 and some in-oz - a little overkill. It was just cobbled togather as a proof of design. It has .020 of back lash which turbocnc worked with quite nicely.
These videos have been posted a few times by me. most people will reconize them.
I milled some 2 inch metal washers with it as well as milling some small signs. Hobby equipment has come a long way sense I had tried to do this 3 years ago.
Chuck Knight <chuckknight@...> wrote:
Well, today there was one of those neat tool sales they hold out in
rural area. Homier is a popular company for these, though today's was
Cummins Tools.
While I was there, I found a fun little toy. Its castings are a bit
rough, but it's a cross-slide drill press vise, essentially a 4x6 inch
X-Y table with a vise on top. Needless to say, my mind immediately
turned to its possibilities as a low cost CNC platform. And, for
$19.99, I couldn't turn it down! It should make a good complement to my
much larger (but potentially less accurate) wood router. Large wooden
parts, small but accurate metal parts? I could make almost anything! ;-)
Yes, you read it right, $19.99 is its full retail price! Dovetail
slides, and a built in facility for shimming it to minimize play...not
too shabby for the price. It seems reasonably well designed.
http://www.cumminstools.com/browse.cfm/4,92.htm
Well, like I said, it's a bit rough in person, but it has potential.
Acme lead screws and nuts, too -- but unfortunately there's some
backlash in the system. Enough that I want to do something about it.
So, here's my question.
Is it possible to modify *existing* nuts to display less backlash?
Perhaps by injecting some sort of polymer into them, or something? You
see, the nuts are part of the casting, as far as I can tell, so there's
no way to remove, modify, or replace them. And, since it's almost
definitely of Chinese origin, the ACME lead scrws are probably of metric
size, which is even harder to find here in the States. I'd rather use
the existing stuff, and just "improve" it, if it's at all possible.
Since it's got such limited travel, as is, I'd like to avoid *adding*
another nut, for example...that would cut down on the capacity of the
table, though that might be the easiest way to make the modification.
Anyone have any good ideas?
-- Chuck Knight
Addresses:
FAQ: http://www.ktmarketing.com/faq.html
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This was really to test some steppers
http://www.electronicsam.com/video/VIDEO1.mpeg
http://www.electronicsam.com/video/VIDEO2.mpeg
http://www.electronicsam.com/video/VIDEO3.mpeg
http://www.electronicsam.com/video/VIDEO4.mpeg
they are 800 and some in-oz - a little overkill. It was just cobbled togather as a proof of design. It has .020 of back lash which turbocnc worked with quite nicely.
These videos have been posted a few times by me. most people will reconize them.
I milled some 2 inch metal washers with it as well as milling some small signs. Hobby equipment has come a long way sense I had tried to do this 3 years ago.
Chuck Knight <chuckknight@...> wrote:
Well, today there was one of those neat tool sales they hold out in
rural area. Homier is a popular company for these, though today's was
Cummins Tools.
While I was there, I found a fun little toy. Its castings are a bit
rough, but it's a cross-slide drill press vise, essentially a 4x6 inch
X-Y table with a vise on top. Needless to say, my mind immediately
turned to its possibilities as a low cost CNC platform. And, for
$19.99, I couldn't turn it down! It should make a good complement to my
much larger (but potentially less accurate) wood router. Large wooden
parts, small but accurate metal parts? I could make almost anything! ;-)
Yes, you read it right, $19.99 is its full retail price! Dovetail
slides, and a built in facility for shimming it to minimize play...not
too shabby for the price. It seems reasonably well designed.
http://www.cumminstools.com/browse.cfm/4,92.htm
Well, like I said, it's a bit rough in person, but it has potential.
Acme lead screws and nuts, too -- but unfortunately there's some
backlash in the system. Enough that I want to do something about it.
So, here's my question.
Is it possible to modify *existing* nuts to display less backlash?
Perhaps by injecting some sort of polymer into them, or something? You
see, the nuts are part of the casting, as far as I can tell, so there's
no way to remove, modify, or replace them. And, since it's almost
definitely of Chinese origin, the ACME lead scrws are probably of metric
size, which is even harder to find here in the States. I'd rather use
the existing stuff, and just "improve" it, if it's at all possible.
Since it's got such limited travel, as is, I'd like to avoid *adding*
another nut, for example...that would cut down on the capacity of the
table, though that might be the easiest way to make the modification.
Anyone have any good ideas?
-- Chuck Knight
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@... [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
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
---------------------------------
Do you Yahoo!?
Yahoo! SiteBuilder - Free, easy-to-use web site design software
[Non-text portions of this message have been removed]
Discussion Thread
Chuck Knight
2003-08-31 00:31:52 UTC
Modifying an X-Y table
Peter L. Peres
2003-08-31 14:20:34 UTC
Re: [CAD_CAM_EDM_DRO] Modifying an X-Y table
Chuck Knight
2003-08-31 19:26:13 UTC
Re: [CAD_CAM_EDM_DRO] Modifying an X-Y table
Jeff Demand
2003-08-31 19:53:42 UTC
Re: Modifying an X-Y table
sam sokolik
2003-08-31 20:10:22 UTC
Re: [CAD_CAM_EDM_DRO] Modifying an X-Y table
ccq@x...
2003-08-31 21:48:16 UTC
Re: [CAD_CAM_EDM_DRO] Modifying an X-Y table
Chuck Knight
2003-08-31 21:54:42 UTC
Re: [CAD_CAM_EDM_DRO] Re: Modifying an X-Y table
sam sokolik
2003-08-31 22:27:26 UTC
Re: [CAD_CAM_EDM_DRO] Modifying an X-Y table
grantfair2001
2003-08-31 23:34:50 UTC
Re: Modifying an X-Y table
Robb Greathouse
2003-09-01 13:32:49 UTC
Re: [CAD_CAM_EDM_DRO] Re: Modifying an X-Y table
ballendo
2003-09-02 04:50:02 UTC
Re: Modifying an X-Y table
turbulatordude
2003-09-02 07:50:34 UTC
Re: Modifying an X-Y table - ACME
Chuck Knight
2003-09-02 19:16:19 UTC
Re: [CAD_CAM_EDM_DRO] Re: Modifying an X-Y table - ACME
turbulatordude
2003-09-02 20:37:48 UTC
Re: Modifying an X-Y table - ACME - for fun and learning
JanRwl@A...
2003-09-02 20:43:38 UTC
Re: [CAD_CAM_EDM_DRO] Re: Modifying an X-Y table - ACME - for fun and learning
m0nkey0ne
2003-09-03 01:26:21 UTC
Re: Modifying an X-Y table - ACME - for fun and learning
turbulatordude
2003-09-03 06:57:50 UTC
Re: Modifying an X-Y table - ACME - EPOXY
Peter L. Peres
2003-09-03 07:39:15 UTC
Re: [CAD_CAM_EDM_DRO] Re: Modifying an X-Y table
ccq@x...
2003-09-03 10:10:15 UTC
Re: [CAD_CAM_EDM_DRO] Re: Modifying an X-Y table - ACME - EPOXY
Chris Baugher
2003-09-03 11:27:07 UTC
Re: [CAD_CAM_EDM_DRO] Re: Modifying an X-Y table - ACME - EPOXY
Chuck Knight
2003-09-03 16:28:58 UTC
Re: [CAD_CAM_EDM_DRO] Re: Modifying an X-Y table - ACME - EPOXY
ballendo
2003-09-04 03:56:10 UTC
Re: Modifying an X-Y table - ACME - for fun and learning
ballendo
2003-09-04 04:01:45 UTC
Re: Modifying an X-Y table
turbulatordude
2003-09-04 06:11:52 UTC
Re: Modifying an X-Y table - ACME - for fun and learning
Chuck Knight
2003-09-04 10:14:42 UTC
Re: [CAD_CAM_EDM_DRO] Re: Modifying an X-Y table - ACME - for fun and learning
sam sokolik
2003-09-04 10:36:39 UTC
Re: [CAD_CAM_EDM_DRO] Re: Modifying an X-Y table - ACME - for fun and learning
turbulatordude
2003-09-04 16:17:44 UTC
Re: Modifying an X-Y table - ACME - for fun and learning
Tim Goldstein
2003-09-04 16:36:03 UTC
RE: [CAD_CAM_EDM_DRO] Re: Modifying an X-Y table - ACME - for fun and learning
JanRwl@A...
2003-09-04 20:57:03 UTC
Re: [CAD_CAM_EDM_DRO] Re: Modifying an X-Y table - ACME - for fun and learning
Chuck Knight
2003-09-04 22:50:27 UTC
Re: [CAD_CAM_EDM_DRO] Re: Modifying an X-Y table - ACME - for fun and learning
JanRwl@A...
2003-09-05 13:11:16 UTC
Re: [CAD_CAM_EDM_DRO] Re: Modifying an X-Y table - ACME - for fun and learning