davidwenrich
Aluminum
- Joined
- Oct 27, 2015
Hello everyone! I've recently purchased a Nakamura TMC2 (1981) 2 axis CNC lathe. It is equipped with Fanuc 6T Model B controller. I am having difficulty getting this machine up and ready for cycle start. Since acquisition, I have fixed the hydro-chuck drawtube malfunction (stuck), Successfully went from "not ready" display with no hydraulics at all (bad connections, dirty contactors) (lack of use) to a machine that powers up with no alarms (no NC alarm, no machine alarm) I can jog the spindle, I can open/close the chuck, I can index the turret, and I can run the spindle from the operators sub-panel. I CANNOT get the machine to zero-return!!! (home) I can't jog either axis. both spindle drives have the PRDY LED illuminated, both drives have correct voltages according to my understanding in the maintenance manuals. I have all documentation that cam with machine when purchased new. I have gone through several checks with parameter tables and DGN table, but they appear to be inaccurate for my machine. (known input allegedly found in parameter 0036 according to the manual, is actually changing state in parameter 0034 in the NC) several other discrepancies. What I don't know is, is my problem operator (self) error? or machine error? For instance, I was not aware that turret must be indexed, and chuck must be cycled, BEFORE the spindle will be started (MDI) Also I have not tried any programs, other than a simple spindle start line, because I assume nothing will execute due to no zero return. Any input for anyone familiar with 6T model B controls is appreciated. (Yes I read The manuals)