Re: [CAD_CAM_EDM_DRO] Turret head for benchtop CNC mill

> Hello all--Would like to bounce an idea if it's not too far "off".
> Have been thinking about designing and building a turret head (tool
> changer) retrofit for Sherline/Maxnc size mills similar to that found
> on the "Burgmaster" type machining centers. This would have to be a
> miniaturized version with maybe six spindles and a turret housing
> maybe 4" across and 2" or less in thickness. Would probably do manual
> indexing with the spindle drive stopped and a shot pin locater to
> assure accurate position. I envision a small spur or helical gear on
> each spindle exposed on the back of the turret to mesh with another
> shaft driven (from above)gear only when the spindle is in operating
> position.
> Most of the tools used on these machines are small endmills up to
> 3/8" diameter so the miniature spindles would probably be set screw
> endmill holders with a couple having small jacobs type chucks.
> Any design ideas anyone could help me with would be appreciated.
> It's going to be difficult getting all these spindles packaged in
> such a small envelope.

I may misunderstand how you intend to do this, but won't adding all
that extra stuff put quite a load on the Z-axis? If you want good
bearings you may not be able to package your spindles that tightly.

Chris