RE: [CAD_CAM_EDM_DRO] Re: making an ali flexible coupler
Posted by
Miroslav Pejic
on 2003-11-10 22:51:12 UTC
Hi Don,
Your explanation is quite good, but I have a little problems with
english. So, please, send some pictures about Ford's coupling
Peja
-----Original Message-----
From: Don Rogers [mailto:Don@...]
Sent: Tuesday, November 11, 2003 3:32 AM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Re: making an ali flexible coupler
tolerate a small amount of mis-alignment, but will wear out rather quickly
if there is more than an thousandths or two of vertical or horizontal miss
alignment, or more than a few minutes of angular mis-alignment. They can
transfer heavy loads though and do provide an vibration isolation between
shafts. The spider coupling is designed to be a single direction coupling,
so there is a lot of backlash in them. All in all, they are not a good
choice for a CNC coupling.
An easier home made coupling might be patterned off a old (1960s) Ford
steering column to steering box coupling. It was a hub that was attached
to the shaft, and had a very flat U shaped yoke with a flat surface
perpendicular to the shaft. These two halves were attached 90 degrees
apart on a rubber/fiber disk. It allowed for quite a bit of angular miss
alignment as well as some vertical or horizontal miss alignment, and
lasted for many years (unless you were in the mid-west and the floor boards
of your truck cab were rusting out). It also gave a very smooth and
undetectable backlash feel to the steering. I don't have a drawing but
could do a back of a napkin one if you wanted to see it.
Don
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Your explanation is quite good, but I have a little problems with
english. So, please, send some pictures about Ford's coupling
Peja
-----Original Message-----
From: Don Rogers [mailto:Don@...]
Sent: Tuesday, November 11, 2003 3:32 AM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: [CAD_CAM_EDM_DRO] Re: making an ali flexible coupler
>The rubber spider that's inserted between the twoThe spider coupling does not take kindly to mis-alignment. It will
>coupling halves allows for misalignment.
tolerate a small amount of mis-alignment, but will wear out rather quickly
if there is more than an thousandths or two of vertical or horizontal miss
alignment, or more than a few minutes of angular mis-alignment. They can
transfer heavy loads though and do provide an vibration isolation between
shafts. The spider coupling is designed to be a single direction coupling,
so there is a lot of backlash in them. All in all, they are not a good
choice for a CNC coupling.
An easier home made coupling might be patterned off a old (1960s) Ford
steering column to steering box coupling. It was a hub that was attached
to the shaft, and had a very flat U shaped yoke with a flat surface
perpendicular to the shaft. These two halves were attached 90 degrees
apart on a rubber/fiber disk. It allowed for quite a bit of angular miss
alignment as well as some vertical or horizontal miss alignment, and
lasted for many years (unless you were in the mid-west and the floor boards
of your truck cab were rusting out). It also gave a very smooth and
undetectable backlash feel to the steering. I don't have a drawing but
could do a back of a napkin one if you wanted to see it.
Don
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/
Discussion Thread
Graham Stabler
2003-11-10 06:19:19 UTC
making an ali flexible coupler
dcdziner
2003-11-10 06:56:02 UTC
Re: [CAD_CAM_EDM_DRO] making an ali flexible coupler
Graham Stabler
2003-11-10 08:42:19 UTC
Re: making an ali flexible coupler
Dan
2003-11-10 09:01:06 UTC
Re: [CAD_CAM_EDM_DRO] Re: making an ali flexible coupler
Harvey White
2003-11-10 09:05:32 UTC
Re: [CAD_CAM_EDM_DRO] Re: making an ali flexible coupler
Jon Elson
2003-11-10 09:36:52 UTC
Re: [CAD_CAM_EDM_DRO] making an ali flexible coupler
Graham Stabler
2003-11-10 10:55:34 UTC
Re: making an ali flexible coupler
Don Rogers
2003-11-10 18:34:49 UTC
Re: making an ali flexible coupler
John Haddy
2003-11-10 18:46:35 UTC
RE: [CAD_CAM_EDM_DRO] Re: making an ali flexible coupler
John Haddy
2003-11-10 18:53:45 UTC
RE: [CAD_CAM_EDM_DRO] Re: making an ali flexible coupler
piggy
2003-11-10 21:05:58 UTC
Re: [CAD_CAM_EDM_DRO] Re: making an ali flexible coupler
Jon Elson
2003-11-10 21:51:51 UTC
Re: [CAD_CAM_EDM_DRO] Re: making an ali flexible coupler
Miroslav Pejic
2003-11-10 22:51:12 UTC
RE: [CAD_CAM_EDM_DRO] Re: making an ali flexible coupler
Don Rogers
2003-11-11 11:26:38 UTC
Re:making an ali flexible coupler
Graham Stabler
2003-11-11 17:11:39 UTC
Re: making an ali flexible coupler