Re: [CAD_CAM_EDM_DRO] Bent Nook ballscrews ?????

Both my screws (the original and replacement) came in heavy mailing tubes
which were in perfect shape. It is pretty obvious that these screws are
bowed all along their length. These are clearly manufacturing defects. I do
wonder whether I can straighten out some of this with a press without
causing more problems.


R. William Kichman, P.E.
Kichman Engineering Associates
103 Old Furnace Road
Cornwall, PA 17016-0643
tel/fax 717/270-0714

----- Original Message -----
From: "Kim Lux" <lux@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Monday, August 11, 2003 7:29 PM
Subject: Re: [CAD_CAM_EDM_DRO] Bent Nook ballscrews ?????


> On Mon, 2003-08-11 at 10:47, Jon Elson wrote:
>
> > >
> > What you need to do is determine whether this is a point bend or a bow.
>
> It is a bow, not a bend.
>
>
> > Were these screws shipped in a container that would prevent them from
> > getting bent?
>
> Yes.
>
> > If not, you might have to arrange to pick up your screws
> > at the McMaster warehouse. Machine tool ballscrews are usually shipped
> > in wooden crates to prevent this.
>
> They are.
>
> > Cheaper screws are often shipped in
> > really heavy mailing tubes, where a crumpled tube would at least be
> > an indication that it could be damaged.
>
> They put a 3/4" ballscrew in a 2 inch square tube with a hardwood side.
> I think the packing is fine.
>
> > Jon
> >
> >
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> Kim Lux <lux@...>
>
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>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach it if
you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this to be a
sister site to the CCED group, as many of the same members are there, for OT
subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING THEM.
DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> bill
> List Mom
> List Owner
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
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>
>