Re: [CAD_CAM_EDM_DRO] Bridgeport Milling Machines

Norman Larson wrote:

> Please excuse my ignornace, but what is a "BOSS"
> milling machine and its characteristics? Also, I
> believe I have seen reference to BOSS 1 and BOSS 2
> machines and would like to know the difference.

BOSS is the label applied to Bridgeport's own, low-end CNC control.
There is no BOSS 1 and 2, thank goodness, they must have figured out
this would cause confusion. The 1 and 2 would refer to the base machine
castings, which are properly referred to as Series I and Series II.
Series I is the same as the well-known 'manual Bridgeport', Series II
is about 50% larger, with 30 x 15" table movement standard, whereas
the Series I CNC machine has about 18 x 12" travel.

The BOSS 3 through 5 controls used stepper motors. The BOSS 6 through
8 use servo motors, the same as now is used on the EZ-Trak machines.

Note that all this applies ONLY to most machines made completely under the
Bridgeport label. Bridgeport made other special machines with other
controls
under their label, and MANY other companies sole product line was a
Bridgeport machine with THEIR own proprietary control (Bandit, etc.)
Bridgeport made a LOT of BOSS machines, whereas the specials with
other controls are rare (just to be clear).

Jon