开云体育

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From: Dick
To: 7x12minilathe@...
Sent: Saturday, February 9, 2013 1:32 PM
Subject: [7x12minilathe] Re: Screwless vise

?

I am interesed in seeing your idea as I will at some point make a modification to mine.
Could you contact me off the group?
Thank you
Dick
--- In 7x12minilathe@..., "Michael Taglieri" wrote:
>
> I realize I'm replying to a post that was written almost 8 months ago, but I
> tend to get behind reading emails from this group, so I hope someone will
> still be interested. Many years ago on the 7x10minilathe group I shared an
> easy trick to solve the problem of adjusting the compound. The problem is
> that you normally want to adjust it with the slide in working position, but
> then you have to screw the slide back to turn the two M6 capscrews and the
> slide sometimes moves while you're doing that. But you can solve this
> problem easily by simply putting spring washers under the heads of the
> capscrews. Then you adjust the screws to hold the compound very snugly
> while still letting you adjust it. I set the screws so the compound will
> JUST move when I tap it with a lump of lead (which is what I use for tapping
> precision surfaces). Once you get the compound where you want it, the
> spring washers will hold it securely while you crank the slide back to
> tighten the screws down fully.
>
> Concerning what washers to use, you can buy Bellville-type spring-washers
> from the usual sources
> (). But I didn't want
> to bother just to get two washers, so I used a couple of small lock washers
> that I had already()
> and filed off their sharp points so they wouldn't dig into the metal of the
> compound.
>
> I did this at least 10 years ago and this setup for adjusting the compound
> still works fine. Of course, it's still a pain in the butt to crank the
> compound back to tighten it, so a more elegant adjustment method would be
> better, but this solution took 5 minutes and solves the problem of unwanted
> motion of the compound, so it's good enough for me.
>
> Mike Taglieri miket_nyc@...
>
> Everyone has his reasons.
> - Jean Renoir "The Rules of the Game"
>
> > P.S. I have just purchased a Seig C3 7 x 14 lathe for work (scientific
> > instrument making) and have spent the last week getting it up to scratch.
> > I have been following the various threads on these small lathes. The basic
> > machine is good in concept but the finishing is a bit poor. I have gone
> > over the lathe and done some major refitting of the machine components and
> > some mods mainly to the saddle and especially to the compound slide
> > locking arrangement. Instead the lousy locking system as provided (2 M6
> > cap head screws) on the lathe as present and having followed the 3 point
> > locking arrangement that is currently being discussed, I have used a
> > tapered locking ring which is very affective and avoids the drilling of
> > angled holes through the cross slide. This system was used on an
> > instrument lathe (possibly Swiss) when I was an apprentice, which I found
> > to be elegant in use. When set up it requires hand tightening of a M3
> > screw to lock the compound slide solid. I will provide pictures and
> > drawings for those interested.
>