Our 10 identical automation cells with M-20iB/25 robots are "drifting" about 1.5mm over the course of 2 months. After speaking with Fanuc's tech support I have heard different theories on the issues like; lose base bolts, lose end effectors or the joints being knocked out after a crash, or fading due to the arm rubbing in and out of fixtures. Fanuc recommends that we purchase the iRVision and re-master the robot every month or so.
- If we vision master every month or whenever we notice drift, will it automatically shift all of our program points frames etc?
- Should we also be looking into robot calibration? A drifing point could either be the robots calibration fading or it's mastering location or both?
These robots have never been mastered or calibrated since they were put in by the integrator 2 years ago. Calibration would also allow for offline programming and cell mirroring, which could come in handy