and then not be able to clamp
You can try to move (change if necessary) belt of turret motor. Maybe just this. Maybe bigger problem. Then the turret must be aligned properly first. Next - You unclamp the turret, and You index it to proper angle with pulse handle. After You need to run automatic turret angle offset procedure - when turret indexes continuously and finds all positions to clamp properly.
suggestions for what to check?
first You check if tapered pin holes are aligned. Normally one pair of pins must be taken out - then You can roughly align the turret just by simply pushing the pins in. Sometimes this "roughly" is quite enough accurate. You need to find next couple of pins. Take them away and check if they are not deformed by hit.
an SDU error
check if You wired the lathe by proper wires - must be copper and cross section enough to deliver sustainable power. Transformer wiring is important also. Check if it's correct. The last is main power supply unit in Control cabinet, which produces 200VDC for drive units. Check the voltage.
is the main motor coolong fan meant to run continuosly?
do You mean main spindle motor fan? It doesn't matters actually: all fans must work continuously on this machine. If there is one, which stops when not needed, it runs on power -up for approx 20 seconds. Only spindle cooling oil cooler fan runs with interruptions, and maybe hydraulic oil cooling fan also. Check the wiring and You find out, if the fan is powered from some intelligent device of just regular motor starter or power supply terminal.
I changed a bearing that was seized in the fan and replaced the associated fuse
You check the fan if it works just connecting it to proper voltage. Windings could be burned out if bearing was damaged.  |