RE: [CAD_CAM_EDM_DRO] Re: I need some feedback on using wire rope for driving...

Why? I think it would work over whatever amount of travel you need, until the weight of the cable itself became a problem.

Are you thinking that the cable would work it's way from one end of the acme rod to the other? I don't think it would. I think it would stay in the center.

______________________________________
Andy Wander
-----Original Message-----
From: CAD_CAM_EDM_DRO@yahoogroups.com [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of Dave Halliday
Sent: Thursday, December 13, 2007 3:14 AM
To: CAD_CAM_EDM_DRO@yahoogroups.com
Subject: RE: [CAD_CAM_EDM_DRO] Re: I need some feedback on using wire rope for driving...

I am thinking that you would have to go through some extreme gyrations to
get this to work over more than a foot or two of spindle travel.

You can get Acme Threaded rod in large diameters but imagine the inertia of
a 15" by 2' bar of metal.
http://www.keystonethreaded.com/acme.htm

I would use thick-wall Schedule 80 PVC pipe with a belt reducing system to
the motor.


Dave - who is planning to use a rack and pinion for the plasma cutter

> -----Original Message-----
> From: CAD_CAM_EDM_DRO@yahoogroups.com
> [mailto:CAD_CAM_EDM_DRO@yahoogroups.com] On Behalf Of cnc002@...
> Sent: Wednesday, December 12, 2007 1:27 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: Re: [CAD_CAM_EDM_DRO] Re: I need some feedback on
> using wire rope for driving...
>
>
> In a message dated 12/12/2007 11:31:46 A.M. Eastern Standard Time,
> kpmartin@... writes:
>
> I think Dave's intent is to use the acme threaded rod as a
> winding drum
> using the threads as the guide groove. You would pick a
> cable diameter small
> enough to bottom out in the thread so you don't have to
> worry about how tightly
> the cable would wedge between the sloped walls of the thread.
> -Kevin Martin
>
>
>
> OK, that makes sense, I thought he was saying use the
> threaded rod in the
> normal fashion but using it as a winding drum would work. Sorry.
>
> Randy A,
>
>
>
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