Re: [CAD_CAM_EDM_DRO] Spindle dimensions & tapers

Bill Vance wrote:

>
> Ok, then, here's a question: I've been told that R8 is the taper one usually
> wants to go for if given any choice in the matter, and that you can't go far
> wrong doing something Bridgeport compatable, when it comes to availability of
> parts and pieces, etc. Assuming I have a reasonably strong Z axis to hang it
> all on, what would be needed to make everything from there out to the tooling,
> be Bridgeport/R8 compatable, including stuff like right angle heads for slitting
> saws, etc.?

Well, the right angle head grips the quill, and is driven by the spindle. So, you'd
need to have the same diameter as the Bridgeport J series quill, which is 3.375".

That should about do it, I can't think of too many other things that use the quill
OD. (I guess there are keyway shapers and high speed spindles that attach
the same way.)

CNC tapping heads need something to keep them from spinning, but it is not
at all critical. Bridgeports have a vertical hole just a little farther out than the
quill radius that can take a 3/8" (I think) rod. I usually have my coolant line
attached there.

Jon