Re: [CAD_CAM_EDM_DRO] Is anyone familiar with a Spindle Wizard?

Jeff Goldberg wrote:

>Thanks Matt.
>
>What I apparently have on my 2J Bridgeport is a Spindle Wizard. Its fitted
>out with what I believe (no labels - old story) is a NEMA 42 stepper at 580
>oz/in at full rating attached at 1:1 ratio. I'm currently wiring it at half
>coil.
>
>Does anyone know what/how/why the Spindle Wizard operates? Matt said that
>it may not have the ability to plunge a cutter into the work.
>

The manual Bridgeport J head has an overload clutch set for 200 Lbs of
linear force.
You don't say what is after the 1:1 ratio. A ball screw with a 5 TPI
thread? That
might be able to develop 200 Lbs linear force. You could put a bathroom
scale
under the quill and measure the downforce when you actually get it moving.
If the downforce is too weak, you can always change pulleys to get some
reduction
of speed/increased force. The quill doesn't need to move as fast as the
X and Y,
as the travel is only 5".

> The BP has no
>manual feed on the Z axis. Should I be concerned?
>

No. A minor annoyance, at the worst. Once you really get into having a
full 3-axis
CNC system, you won't miss the manual quill very much. If you tap many
holes,
you'll want a tapping head for it.

Jon