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Subject: 
Re: new (to me) use for worms
Newsgroups: 
lugnet.build
Date: 
Fri, 18 Jun 1999 20:10:32 GMT
Viewed: 
611 times
  
Terry K wrote:

Interesting idea.
But in thinking about it (without actually prototyping), I have a problem. You
propose to use the worm on the drive axle, right?  And the idea is that the
worm can slide a little bit to and fro to adjust for the axles movement in the
suspension?
But what interfaces with the worm to turn it?  If you use a normal round gear,
it would not turn the worm, just push it one way or the other along the axle.
Maybe another worm gear alongside it to provide motive power?  But that would
not allow the axle to swing without losing contact between the worms.

If I'm understanding the workings, what is being suggested is to use the
worm as a slip coupling (which just happens to have a worm screw). If
you look at a cars drive shaft, you will see that it is in two parts so
that it can change length. Terrible ASCII graphic of car drive shaft:

   +- this axle is fixed
   |
   v             -------------+
=========================     |||||| this axle can slip in and out
                 -------------+

What is proposed to use the worm gear:


                        the worm -+
  +- this axle is                 |
  |  fixed                        V
  V                     ////////////
============================    =================== this axle can slip
in and out
                        ////////////

--
Frank Filz

-----------------------------
Work: mailto:ffilz@us.ibm.com
Home: mailto:ffilz@mindspring.com



Message has 1 Reply:
  Re: new (to me) use for worms
 
(...) Yes. (...) I did not know that. I've accepted over time that a number of things in car suspensions must work simply by having room to wiggle a bit, but that this particulalr problem is avoided *that* simply explains a lot. (Wait till you see (...) (25 years ago, 18-Jun-99, to lugnet.build)

Message is in Reply To:
  Re: new (to me) use for worms
 
(...) Interesting idea. But in thinking about it (without actually prototyping), I have a problem. You propose to use the worm on the drive axle, right? And the idea is that the worm can slide a little bit to and fro to adjust for the axles movement (...) (25 years ago, 18-Jun-99, to lugnet.build)

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