Re: [CAD_CAM_EDM_DRO] Long X axis Method of travel.

Peja,

The problem that I had was with racking of the Gantry. This can be overcome
by proper design.

For machines 4' by 4' or smaller, I recommend my design using a moving table
with a fixed (bolted down) bridge.

Bob Campbell
http://www.campbelldesigns.com
Breakout Boards
VisualMill 5.0 basic

----- Original Message -----
From: "Miroslav Pejic" <peja@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Thursday, November 13, 2003 8:20 AM
Subject: RE: [CAD_CAM_EDM_DRO] Long X axis Method of travel.


> Hi Bob,
> What problems can give lead screw down the center under the table?
> Please explain.
> Peja
>
> -----Original Message-----
> From: Robert Campbell [mailto:bob@...]
> Sent: Thursday, November 13, 2003 4:44 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: Re: [CAD_CAM_EDM_DRO] Long X axis Method of travel.
>
>
> Dex,
>
> Rack and Pinion driven from both sides seems to be popular.
>
> A lead screw down the center under the table can give you problems if it
is
> not designed properly.
>
> I have some new 639 oz/in stepper motors for sale that may be of interest.
>
> Bob Campbell
> http://www.campbelldesigns.com
> Breakout Boards
> VisualMill 5.0 basic
> ----- Original Message -----
> From: "dex367" <dexlabboy@...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Thursday, November 13, 2003 7:17 AM
> Subject: [CAD_CAM_EDM_DRO] Long X axis Method of travel.
>
>
> > I am in the preliminary process of designing a 4 axis machine using
> > open loop stepper motors and a PC. It will be used to route wood. The
> > X axis needs to be 96 inches long. That about 2.4 meters.
> >
> > What would be a good method to drive this long lenght?
> >
> > 1. Tooth Belt Drive
> > 2. Rack and Pinion
> > 3. Lead Screw
> > 4. Other?
> >
> > Dex
> >
> >
> >
> > Addresses:
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> Addresses:
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> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
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> 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/
>
>
> 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
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> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
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> 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/
>