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

Hi Graham:
I would still do it on a conventional lathe equipped with a travelling
steady.
Whether the headstock moves or the carriage moves is really not relevant as
far as the requirements of this job are concerned.
Swissturning is a high volume production process...it's just too difficult
to get it going with a cobbled setup.
The Devil is really in the details with this process, but turning on a
normal machinists lathe will do this job easily.
A good part of the reason that Swissturning is successful as a process, is
that it's possible to put a lot of tools into the work simultaneously, but
you don't need to do that.
I'd abandon the idea.
Cheers

Marcus

----- Original Message -----
From: "Graham Stabler" <eexgs@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Monday, May 12, 2003 8:53 AM
Subject: [CAD_CAM_EDM_DRO] Re: swiss turning in minature?


>
>
> 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