Re: [CAD_CAM_EDM_DRO] Re: Re: Re: CNC router Z axis travel

The first solution requires a custom lead sxrew...the screw must have a
right hand thread on one end and a left hand screw on the other end.

The second solution uses a hollow ball screw (these are available...i didn'r
say they were cheap) with and adapter mounted on one end. the adapter is
driven by a motor mounted 90 degress to the axis of the screw. this adapter
provides liner motion of the table thru the ball screw mounted on the table.
Extra linear travel is obtained as the adapter rotates on a secondary
threaded rod. A commercial part for making this work is available from
Dynamic Automation, 307 North Michingan Avenue, Suite 915, Chicago Ill.
60601. I just got this info about 3 days ago.

Smoke



-----Original Message-----
From: ballendo@... <ballendo@...>
To: CAD_CAM_EDM_DRO@egroups.com <CAD_CAM_EDM_DRO@egroups.com>
Date: Monday, December 11, 2000 3:09 PM
Subject: [CAD_CAM_EDM_DRO] Re: Re: Re: CNC router Z axis travel

>Smoke,
>
>C'mon!
>
>First, You bust my butt in a message saying I've got it all wrong, my
>advice is TOO limiting, saying you have a better way...
>
>Then you say you're too busy to let us know the better way???
>
>Second, You told us (when we were talking about leadscrew cost) that
>you could use a six foot screw to get a 10' travel. We called you on
>it, and you posted to the files section something which clearly does
>not work... Now you say that it's going to take a hollow
>ballscrew!?!?
>
>Saying you THINK something MIGHT work is a whole lot different than
>what you've been saying.
>
>If this were a poker game, I just called your hand...
>
>Ballendo
>
>P.S. I believe you have talent and enjoy your input to the group. I
>am watching the 'dream machines' take shape. I wish you luck and
>success.
>
>>Actually, I now have two methods to make the screw work. However,
>>if your looking to save a lot of money your out of luck! The first
>>method requires a special ball screw. <snip>
>>Smoke
>
>
>
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