On 2008-07-15, Mike Henry wrote:

"Ignoramus22312" wrote in message
...
On 2008-07-14, Ned Simmons wrote:
On Mon, 14 Jul 2008 10:36:05 -0500, Ignoramus22312
wrote:


Has anyone dealt with this issue. Clausing wants $750 (not a typo) to
custom make this part for me.

4) Split the nut and make it adjustable. I've done this on two
machines, a lathe and a surface grinder.

It is in such a bad shape, that doing so would not help.

On the lathe, the nut was rectangular and there was enough material
around the thread to install two guide pins and two adjusting
screws. Drill and ream for the guides before cutting the nut in
two.

The grinder's nut was cylindrical with a thin wall. I cut it in half
and turned a fine male thread on each piece. A coupler with matching
threads and the same OD as the nut allows for lash adjustment.

None of these options will account for the inevitable unequal wear in
the lead screw.

The lead screw is just $22 at McMaster-Carr, I will just buy it if I
find a lot of wear on the existing one, but I expect (and saw) most of
the wear on the brass nut. So I will start with the nut first.


I'm not positive, but suspect that the nuts and leadscrews sold by
McMaster-Carr might be somewhat low precision. That might not be important
for the compound or cross slide where travel is usually short, but you
should be aware of it so you can make an informed decision.


I think that all cross slides should have backlash, I just want to
have it smaller. I think that I can do it without breaking anything
and can always reuse the old nut.

--
Due to extreme spam originating from Google Groups, and their inattention
to spammers, I and many others block all articles originating
from Google Groups. If you want your postings to be seen by
more readers you will need to find a different means of
posting on Usenet.
http://improve-usenet.org/