Re: AC spindle motor

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "plastiguy" <plastiguy@a...>
wrote:

> Hi Group -
> Thanks for all of the input on the spinning ball screw nuts. I'll
> proceed with it and keep the group posted on any screw-ups (ha! I
> kill me) or dramatic success stories.
>
> New quandry: AC spindle motor and inverter. I'm loking at all of

the

> AC spindle motors on the market, and am overwhelmed by their
> price/h.p. Are these for real? Am I over-spec'ing my needs? I

just

> want a variable speed, 5-10 h.p. or so motor that's quiet (not

like a

> porter cable or other router-based motor) and is able to accept an
> industry standard manual collet system. The Columbo with it's
> ceramic last-a-lifetime bearings are attractive so far. Anybody

with

> firsthand knowledge of its performance and price (including
> inverter), and how it's controlled (e.g. can Mach 2 generate the
> signals the inverter needs to see for direction, on/off and

speed?)

> I'll be using a Sound Logic breakout board (daughter board for
> spindle control; not yet on the market, but is forthcoming in the
> next couple of months, according to the manufacturer).
> I'm open to other options/manufacturers if the Columbo or even any

AC

> spindle motor route won't cut it.
> Dizzy Scott

How about a belted drive to a spindle assembly instead of the
integral spindle/motor which I think you're looking for? That way
you might be able to pick up a used spindle off a VMC. Even the
small Emco F1/F1P machines used a standard 30 taper spindle. I've
seen those complete machines for less than most integral spindle
motors.

Doug