Re: Angle grinder for high speed bits on a CNC Bridgeport?

Jeff,

A way that worked for me was to make a bracket that clamped around
the machine quill and at an exact distance from that center another
hole where an electric die grinder is clamped. IIRC, mine is spaced
4" inches from the quill centerline. Program the cutter path 4" X
axis offset from the quill (machine spindle) location.

Note: my controller allows a resetting of the Z "home" position so
the quill is partially extended enough for the bracket to clamp
around the quill.

My die grinder is a Precise brand with 40,000rpm. I prefer to use
the electric spindle because the air type require so much volume for
continuous running.

Doug

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "washcomp" <jeff@w...> wrote:
> I'm thinking of a way to use small cutters (for engraving or
routing)
> on the CNC Bridgeport 2J head I'm toying with. I think an air
> powered angle die grinder dosn't have enough torque. Anyone try
> adapting an angle grinder? Any idea how to addapt a 1/4" collet
> holder to the "nose" and aligne it acurately with the spindle?
Will
> it keep its accuarcy?
> Maybe I can afix an NTMB 30 head to it using a collet holder for
> mounting into the spindle?
>
> Any other ideas?
>
> Thanks and regards,
> Jeff