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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: 
1823 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 (...) (27 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 (...) (27 years ago, 18-Jun-99, to lugnet.build)

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