Re: 5-axis Taig Mill

Hi Rab,

NICE PIECE!

What resolution do you need on the 5th axis (around pivot)? How about
mounting the spindle on a 3" or 4" timing belt pulley, and running that
from a stepper? That would be somewhat smaller, and quite a bit
lighter. Although you wouldn't have the back-gearing (worms don't
back-gear) of the worm gear to keep it solid.

And it looks like you run the work in a second worm-driven spindle
mounted as an 'A' axis? Wouldn't you want to run the rotary table
there? (you have two now?).

Quite involved! I can't imagine how to develop the toolpaths!

Alan KM6VV

rainnea wrote:

>
> Thanks everyone for the info on the air spindles, I'll try to contact
> Quantum CNC tommorow, looks like the MaxNC air-spindle is for
> engraving and may not have enough torque for cutting away wood.
>
> Andrew, I've put some photos in the Yahoo Taigtools files folder
> rather than taking up space in this group's folder, look under "Rab's
> Stuff"
> http://groups.yahoo.com/group/taigtools/files/Rab%27s%20Stuff/
>
> My approach is probably overkill, but I wanted to see if the
> principle worked and I could generate the G-Code, I do need something
> lighter than the Sherline Rotary table. What do you have in mind to
> control the movement of the 5th axis around the pivot point ?
>
> Regards,
> Rab
>