Hey Guys, I'm having issues with the finish of my parts and i narrowed it down to the z axis.
It looks like the servo doesn't have enough force to stop in time, making the spindle to overshoot and then go back to where it should be.
I know this machines had a retrofit from Bridgeport and swapped the SEM motor for a parvex one.
Sadly I have the smaller SEM unit, but I'm not sure if the machine has always been like this or its defiantly getting weaker and making the bad design of the Bridgeport more evident.
If that's the case what should i be looking for? Would worn brushes on the servo cause the lack of torque? Or maybe is the big capacitor that feeds the servos is going out?
i also found my belt on the z axis is not aligned correctly, I removed the motor and tried to get it correct, but the belt keeps pulling up.
Hopefully the video will help illustrate the problem I'm talking about.
https://youtu.be/Fk-O_RkMbt0
Also aparently the servomotor was replaced in 2005 and last time it was serviced was 2012.