Bridgeport Manual to CNC conversion...

[Davek0974]

To get back on track....

Have decided to replace the little Bridgeport motor and simple V/Hz VFD with a 3Hp inverter rated motor, sensorless-vector vfd, timing belt drive and encoder - this should give me usable torque and power from about 300rpm to 3000rpm and also semi-closed-loop speed regulation as Mach and the CSMIO controller will maintain the speed as load changes, up to the point of tripping the vfd :)

It means i can finally get rid of the clattering vari-speed pulleys and power-sapping drive and not have to mess with setting the speed manually. I also get actual speed display on-screen.

Also got the braking resistor so stopping time should be about 1s or less.