Re: CV Joint for mill

>--- In CAD_CAM_EDM_DRO@yahoogroups.com, "vrsculptor"

<vrsculptor@h...> wrote:

> I was considering using a constant velocity joint to allow me to
> alter the angle of the cutter on my mill for 5 axis positioning. It
> seems like this would be easier to do than using three gears. My
> mills head is part of the base and doesn't tilt. I thought this
>would
> be easy but I've tried a bunch of google searches on CV joints,
> Rzeppa and haven't had any luck. I found a lot of drive shafts for
> cars. McMaster only has low speed joints.
>
> I was hoping to find a Rzeppa joint for about a 3/4" to 1" shaft
>that
> would allow around 45 degrees of motion. I did find one link for
>back
> to back universals but it requires a sliding spline.
>
> Would this work? Any suggestions on a supplier?
>
> Roger S

I made a universal drive shaft for my horizontal mill using the
steering joint shaft from a tilt cab Ford truck. It had a double
joint and a small splined shaft already on it.
All I had to do was make two drive ends to fit the internal bored and
keyed holes.
A lot of cars also have them on the steering over here to allow the
wheel to be adjusted.
A decent breakers yard should turn some good ideas up.

John S.