Renishaw RMP60 Installation Manual page 61

Symptom
Poor probe repeatability
and/or accuracy.
Cause
Debris on part or stylus.
Poor tool change repeatability.
Loose probe mounting on shank
or loose stylus.
Environmental or physical
change caused an error in
calibrated offset.
Calibration out of date and/or
incorrect offsets.
Calibration and probing speeds
not the same.
Calibration feature has moved.
Measurement occurs as stylus
leaves surface.
Measurement occurs within
the machine's acceleration and
deceleration zone.
Probing speed too fast or too
slow.
Temperature variation causes
machine and workpiece
movement.
Machine tool faulty.
Excessive machine vibration.
Action
Clean part and stylus.
Redatum probe after each tool
change.
Check and tighten as appropriate.
Review probing software.
Repeat calibration routine.
Review probing software.
Review probing software.
Correct the position.
Review probing software.
Review probing software and
probe filter settings to increase
back off distance.
Perform simple repeatability trials
at various speeds.
Minimise temperature changes.
Perform health checks on
machine tool.
Change trigger filter setting.
Eliminate vibrations.
7.3