Re: [CAD_CAM_EDM_DRO] Rotary table 3-Jaw chuck mount?

On Tue, 22 Jan 2002 19:47:53 -0700, "krlux" <lux@...> wrote:

>2) an adapter plate that used 4 tee bolts to hole it to the table and had a
>D1-4 mount for the chuck.

There are a lot of options. If one was going to put a CNC stepper or
servo drive on the rotary table and use it vertically as a 4th axis for
machining cams for their motorcycle transmission, or something (Like
John Stevenson does at times I think), having the ability to mount a
chuck would be very handy. I've also considered adapting one of the
super spacers that has a rotary table like worm drive crank handle with
a servo drive for this very task.

ENCO (not EMCO) used to sell a D1-4 plate as you describe as an
accessory to their 11" lathe (which was a very nice piece of equipment).
I doubt it is still being produced since they are only building CNC
machines now and have sold the line. The place to inquire about this
might be Blue Ridge Machinery.

I've considered machining an 8" OD flat backplate for the 6" Cushman
backplate mounting chuck I don't use on the SB. I'd make it with "T"
nut mounting holes, a center hole, and a rear registration boss to fit
the center recess in my rotary table for easy co-axial alignment, then
attaching it to the chuck using the normal chuck to back plate mounting
bolts (coming into the chuck through the back).

I think the adaptor plate could be aluminum with out loss of
functionality. I could probably machine it out of a 1" thick 8" square
chunk of aluminum - easy enough to find at Industrial Metal Supply in
the Valley.

Fitch