Re: [CAD_CAM_EDM_DRO] Re: Swiss turning conversion

I like the roller bearing idea Jon , but...I'd use a scissors type mount for
the bearings similar to those available for doing knurling. I'd replace one
of the knurls with a pair of bearings and the other with a single bearg.
this would provide the 3 point contact. I'd also make it spring loaded like
the ones we made at school.

Smoke

>Since you just want to support the shaft, what about a pair of roller
>bearings opposite the tool with a third bearing heavily spring loaded
>into the other two? I made such a setup once, except it mounted to the
>toolpost. Had to turn 24" lengths of 1/2" nylon, worked like a champ.
>Actually it was a custom tool holder/bearing setup that went into a tool
>an Aloris tool holder. If I still have it, I'll snap a pic and email it.
>I'd think it wouldn't be too difficult to mount this rig to the carraige
>instead of the toolpost. It's easily adjustable, ball bearings ought to
>last a long time, and they're cheap. (compared to making throwaway
>bushings)
>
>Keep in mind that you must either turn your part in one pass, or you can
>rough in steps roughly equal to something less than the distance between
>the support and the tool, and you won't be able to take a finish pass.
>
>Jon
>