Re: [CAD_CAM_EDM_DRO] Re: Bridgeport

waqar sheikh wrote:

> Thanks a lot guys for the solutions you have offered.
> Though I havent finally decided yet what to do about
> it, but I really value your suggestions. Where can I
> find Boss I and II machines. Furthermore, what further
> would be required to turn these into CNCs, I mean what
> can be the estimate.

BOSS is the name Bridgeport applied to a particular line of their
own machines made expressly for CNC. The controls were apalling
junk, and so the machines are often found in nearly unused
condition, as they rarely worked. The earlier ones had stepper
drive, the lates 2 models had servo drive very similar to their
current EZ-trak models. The I stands for Series I, roughly the
same size as the standard manual bridgeport (1J and 2J head
models). The II is for Series II machines, about 50% larger than the
series I, with bigger heads, too.

For the stepper BOSS machines, you only need a PC, cnc program
of your choice, and a stepper driver. But, it has to be a big stepper
driver, 140 V at 9 A or so, to drive those big motors.

Jon