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
>
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