Re: [CAD_CAM_EDM_DRO] Re: Inexpensive ACME (lead) screws

Greg;

Most any table can be modified to some extent or other, depending upon your
engenuity, of course, and these are no exception. One point I've noted about
them, is that the re-zero-able dials aren't, as long as you leave the bar they
call a spring in place. With what they use, you can't re-sero them with a ten
foot cheater pipe. Remove the bar, and replace it with something, like a small
piece of that springy banding they use for strapping down cargo to pallets, and
they work great. Thats on the $119 model, the slightly smaller cheaper one
might require different tweaking and tuning. On the bigger one, bearings would
probably be a good idea, too. They're a bit rough, but you can't make one for
the price, even though I intend to do that one day.

Bill

On Wed Jan 28 20:34:22 2004 Greg Maxwell wrote:

>Can these cheap tables be upgraded with new lead screws and anti-
>backlash nuts?
>
>Greg
>
>
>--- In CAD_CAM_EDM_DRO@yahoogroups.com, ccq@x wrote:
>> Not to mention that http://www.use-enco.com/ also has cheapie
>Chinese x-y
>> tables. If they're not up to your spec, they're still a good
>running start at
>> the problem.
>>
>> Bill
>>
>>
>> On Wed Jan 28 14:25:07 2004 Simon M. Arthur wrote:
>>
>> >MSC and Enco sell Acme threaded rod and nuts fairly cheap.
>> >
>> >Greg Maxwell wrote:
>> >
>> >>I am working on converting an existing manual panagraph engraver
>to a
>> >>CNC (2 axis) system. I have a good understanding of the
>software,
>> >>motors (probably use steppers for low cost), and their associated
>> >>motor drivers. However my problem is in the hardware. I have
>> >>searched a couple websites to get pricing on a x-y manual table
>that
>> >>will be controlled with the steppers but they want $1,000's for
>> >>these. I have contemplated buying the lead screws and pillar
>blocks
>> >>and building my own x-y table but the cost of the lead screws
>> >>($100's) seem to make this also overcostly. Is there any surplus
>> >>dealers that can sell lead screws (and bearings) for reasonable
>costs
>> >>(i.e. $20-$50)? I have searched ebay for parts but they only
>have
>> >>1pcs. I need to match the x & y turn ratios so I don't have to
>deal
>> >>with interpolation issues.
>> >>
>> >>Please let me know.
>> >>
>> >>Thanks,
>> >>
>> >>Greg
>> >>
>> >>
>> >>
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>> --
>> --------------------------------------------------------------------
>--------
>> RKBA! ***** Blessings On Thee, Oh Israel!
>***** 4-19!
>> ----------------+----------+--------------------------+-------------
>--------
>> An _EFFECTIVE_ | Insured | All matter is vibration. | Let he who
>hath no
>> weapon in every | by COLT; | -- Max Planck | weapon sell
>his
>> hand = Freedom | DIAL | In the beginning was the | garment and
>buy a
>> on every side! | 1911-A1. | word. -- The Bible | sword.--
>Jesus Christ
>> ----------------+----------+--------------------------+-------------
>--------
>>
>> Constitutional Government is dead; LONG LIVE THE
>CONSTITUTION!!!!!
>>
>> --------------------------------------------------------------------
>--------
>
>
>
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>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
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>List Owner
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--
----------------------------------------------------------------------------
RKBA! ***** Blessings On Thee, Oh Israel! ***** 4-19!
----------------+----------+--------------------------+---------------------
An _EFFECTIVE_ | Insured | All matter is vibration. | Let he who hath no
weapon in every | by COLT; | -- Max Planck | weapon sell his
hand = Freedom | DIAL | In the beginning was the | garment and buy a
on every side! | 1911-A1. | word. -- The Bible | sword.--Jesus Christ
----------------+----------+--------------------------+---------------------

Constitutional Government is dead; LONG LIVE THE CONSTITUTION!!!!!

----------------------------------------------------------------------------