At the company I work for we have 7 Fanuc am welding robots. We are constantly having problems with 2 of them One is AM-120iB- Rj3i and the other is a AM-120ib-10L- R30A. We have 3 identical weld cells of the AM-120iB/10L-R30A and only one of them has issues. Every time we change out a hold fixtures and to run a different weldment we are having to touch up most of the weld points. I check the TCP run the wrist and neck alignment programs and straighten the torch every time. And we still have to touch up the points.
All of the hold fixtures are located with male/female locating pins so the fixturing is not a problem.
After the part is touched up we could run 300 parts it will run fine but as soon as we change out the program and try to run it again we are back to touching up the program.
Thanks For Your help