Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew

Besides...cables will stretch over time.

Smoke
-----Original Message-----
From: Jon Anderson <janders@...>
To: CAD_CAM_EDM_DRO@egroups.com <CAD_CAM_EDM_DRO@egroups.com>
Date: Friday, December 01, 2000 2:30 PM
Subject: Re: [CAD_CAM_EDM_DRO] Re: Looking for short ballscrew

>Greg Nuspel wrote:
>>
>> What if you used a servo motor on the fine feed wheel input, but ran
>> a cable to a clamp on the quill. This cable then runs over a drum
>> attached to an encoder. Now you have no backlash in your system.
>
>Wrong. Backlash still present, there's just some feedback as to where it
>is. Well, I'm running Ahha, no encoder feedback.
>I like trying odd things now and then, but when it comes to putting
>bread on the table and keeping a roof over my family's heads, I'll stick
>with proven technology.
>In typical fashion, I embarked upon a plan without thinking it through
>completely. It only took a few minutes of real measuring to see that the
>hardware I had wouldn't work like I thought, and a few more moments to
>realize the whole approach wasn't as cost effective as the off the shelf
>quill drive.
>
>Jon
>
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