Re: [CAD_CAM_EDM_DRO] Re: swiss turning in minature?

Hi guys;

I'm not sure what's available these days, but there are some very small lathes
that are used to turn the armatures on electric motors. Watchmakers have some
pretty small mills and lathes, too.

Bill

On Mon May 12 08:53:21 2003 Graham Stabler wrote:

>Dave, it is more the machine that I want to minaturise than the
>parts. The roller I mentioned was to be about 1mm in diameter but
>other parts may be smaller and accuracy is very important. It is for
>a 100:1 planetary friction drive for a 4mm (that's not the shaft but
>the diameter) motor.
>
>Marcus, thanks. It sounds like you know your stuff. I had wondered
>about using just a brass clock bushing that would be replaced often
>and held in a ball race. Then I could use say silver steel as a
>blank as it is fairly accurate. I can't help but feel there must be
>a dirty solution. Maybe a makeshift airbearing. Make or obtain an
>accurate bush, bore out some of the central section and apply
>compressed air through a cross drilled hole. This would still need a
>good blank material. I can buy hardened ground stock in the form of
>drill blanks but are unhardened blanks available?
>
>It sounds as if this might not be the simple solution I had hoped
>for. Darn.
>
>Cheers,
>
>Graham

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