sawjam
Plastic
- Joined
- Oct 23, 2012
- Location
- New Zealand
Hi
I've been lurking for a while, so thought I'd reach out and ask for some advice, I've a Bridgeport Mill with 6f power feeds which have never worked since I bought the machine. I've decided to investigate why, It's a hobby shop not production so dont care about time just want to investigate. The electronics are Erskine (UK Bridgeport) cant find any reliable circuit diagram so I'm tracing out the circuit to see if I can understand it.
This is my investigation to date, not to productive!
Misadventure bridgeport powerfeed - YouTube
The 5 amp fuse wasn't such a great idea! I guess it's reaction time was too slow compared to a thermal switch.
I've since stripped the motor appart and apart from general bushes dust and a bit of grime looks resonable. I've checked the field resistance and its about 280Ohms each side, dont know if this is good or bad but have assumed as both sides are the same it's probably good?
I seem to have come to the conclusion I can't test the motor armature unless I can power the motor would this be correct?
If any body can suggest a path of investigation I would appreciate it, or a possible cause to the problem.
Thanks
I've been lurking for a while, so thought I'd reach out and ask for some advice, I've a Bridgeport Mill with 6f power feeds which have never worked since I bought the machine. I've decided to investigate why, It's a hobby shop not production so dont care about time just want to investigate. The electronics are Erskine (UK Bridgeport) cant find any reliable circuit diagram so I'm tracing out the circuit to see if I can understand it.
This is my investigation to date, not to productive!
Misadventure bridgeport powerfeed - YouTube
The 5 amp fuse wasn't such a great idea! I guess it's reaction time was too slow compared to a thermal switch.
I've since stripped the motor appart and apart from general bushes dust and a bit of grime looks resonable. I've checked the field resistance and its about 280Ohms each side, dont know if this is good or bad but have assumed as both sides are the same it's probably good?
I seem to have come to the conclusion I can't test the motor armature unless I can power the motor would this be correct?
If any body can suggest a path of investigation I would appreciate it, or a possible cause to the problem.
Thanks