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Posted by Doug White on January 4, 2010, 7:30 pm
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> Awl --
>
> Luckily, I found a set of jaws I had made, for milling multiple
> 5/8'ish round rods on their ends -- facing, tapped holes, etc.
>
> These jaws are not so easy to make, so I'm glad I found them, but it
> dawned on me how closely they resembled the rack part of a rack and
> pinion gear. If the rack could be fastened to a vise jaw, wouldn't it
> make a fantastic fixture for multiple small rounds?
>
> The moveable jaw uses wood or something compressible to apply
> reasonably uniform pressure to all the pieces. The jaws ( for 6"
> Kurt, but about 8" wide) I have can hold about a dozen rounds. A rack
> could hold many more smaller pieces.
>
> Proly more useful for the cnc-lathe-less peeple.
> I do many "lathe-ish" operations on a vmc, if I have the psychological
> wherewithall to make the fixture. In some cases, the right set up
> might rival a low-end cnc-lathe ito parts rate, but always at the
> price of a significant set up.
I think Snap Jaws has something like that, only they have multiple
pistons linked by hydraulics. That ensures every part gets the same
pressure. Very slick (but expensive):
http://www.snapjaws.com/whatsnew.htm
Doug White
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>
> Luckily, I found a set of jaws I had made, for milling multiple
> 5/8'ish round rods on their ends -- facing, tapped holes, etc.
>
> These jaws are not so easy to make, so I'm glad I found them, but it
> dawned on me how closely they resembled the rack part of a rack and
> pinion gear. If the rack could be fastened to a vise jaw, wouldn't it
> make a fantastic fixture for multiple small rounds?
>
> The moveable jaw uses wood or something compressible to apply
> reasonably uniform pressure to all the pieces. The jaws ( for 6"
> Kurt, but about 8" wide) I have can hold about a dozen rounds. A rack
> could hold many more smaller pieces.
>
> Proly more useful for the cnc-lathe-less peeple.
> I do many "lathe-ish" operations on a vmc, if I have the psychological
> wherewithall to make the fixture. In some cases, the right set up
> might rival a low-end cnc-lathe ito parts rate, but always at the
> price of a significant set up.