Re: [CAD_CAM_EDM_DRO] Sherline Z-axis ballscrew feed.

Since I do not have any other shop equipment except for 3 Sherline Lathes
and 3 Sherline mills, I am not exactly sure what you are describing with the
split nut or slotted and pinched nut. My goal is to eliminate as much of
the Z-axis backlash as reasonably possible.

Please direct me to a picture of this type of lash elimination scheme.

Thanks,

Daniel J. Statman, Statman Designs
www.statmandesigns.com
dan.statman@...

P.S. I was also hoping to just spark somebody else into action. I much
prefer to purchase the solution than to build it myself. Not the typical
hobby/DIYer approach, but I do not have time to do it myself.

----- Original Message -----
From: "Tim Goldstein" <timg@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Sunday, September 14, 2003 10:50 PM
Subject: RE: [CAD_CAM_EDM_DRO] Sherline Z-axis ballscrew feed.


> I think this group has ballscrewitis. Not every application needs a ball
> screw and some of the most demanding positioning application don't use
> them. Need to move a lot of weight and move it fast with heavy
> acceleration? Than a ballscrew is a great solution.
>
> I have been playing with my Taig 2019CR and it is much more accurate on
> the Z than the Sherline. The Taig solution is simply a slotted nut that
> is pinched on the screw to adjust the lash. Works great and easy to
> adjust. There are also plenty of nice very high precision acme or
> modified acme leadscrews (.0006" per foot) with matching self adjusting
> zero lash nuts that would fit right into a Sherline and are very low
> cost compared to an equally accurate ballscrew. It would be easy to make
> up a split delrin nut or for that matter use another of the Sherline
> bronze nuts and make it into a split nut that you can easily adjust to
> eliminate the lash on the Z.
>
> Now if the goal is to impress your friends because your Sherline can run
> faster and jump higher, great get the ballscrews. But if the goal is to
> eliminate the lash in a manner that is consistent with the design
> philosophy of the rest of the machine I would look at a split nut or a
> slotted and pinched nut.
>
> Tim
> [Denver, CO]
> Beat the Sherline Oct 1 price increase. Order Now!
> New Sherline Prices at http://www.ktmarketing.com/SherlineIncrease.htm
>
> Sherline & Taig products at Deep Discount
> Mach1 & DeskCNC with credit card ordering
> www.KTMarketing.com/Sherline
> e-mail me at Timg @ KTMarketing.com for items not yet listed
>
>
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