Re: [CAD_CAM_EDM_DRO] Affordable ball screws

>
> Hello Jon,
>
> I hope you don't mind me asking but do you work with machinery as part
> of your job? You seem like a dictionary for all things machine wise!
>
> Regards,
> John H.
>
> > I'm pretty sure the original poster was thinking of a hydrostatic nut
> > retrofit to an Acme screw machine. I think it is a pretty crazy idea, and
> > would require hundreds of micro-sized holes drilled in the faces
> > of the thread to work. Just squiring oil into an Acme nut will not turn
> it
> > into a hydrostatic bearing. You have to establish a fluid film under high
> > shear in the space between the two surfaces, and a nut's threads
> > are a complicated geometry to do this in. If the whole nut was a very
> > tight fit against the screw, both at minor and major diameter as well as
> > at the flank of the thread, then it might be possible to just squirt oil
> in
> > the middle. This might work with a cast (a la Moglice) nut. Oil
> collection
> > would still be a complicated problem, as the screw would likely be
> > dripping along its length.
> >
> > Jon
> >
> >
> > Addresses:
> > FAQ: http://www.ktmarketing.com/faq.html
> > FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> >
> > OFF Topic POSTS: General Machining
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> > http://www.metalworking.com/news_servers.html
> >
> > http://groups.yahoo.com/group/jobshophomeshop I consider this as a
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> >
> >
> >
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> > bill,
> > List Mom
> > List Owner
> >
> >
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>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
>
> 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 as 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.
>
> Post messages: CAD_CAM_EDM_DRO@yahoogroups.com
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...
> Moderator: jmelson@... timg@... [Moderator]
> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
> bill,
> List Mom
> List Owner
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/