Measurement Troubleshooting - Renishaw XM-60 multi-axis calibrator User Manual

XM multi-axis calibrator

Measurement troubleshooting

Problem
Beam strength fluctuating
Beam strength fluctuating during
machine movement
All data looks noisy
All data (except for roll) looks
noisy
Noisy straightness measurement
Drift (most significant for linear
measurements)
Possible causes
Environment is outside operating temperature range
• Normal behaviour at increased speed between
targets
• Receiver clamp block is not tight
XM fixed loosely
The unit is positioned in turbulent air environment
None or short term averaging is used
The system and/or the set-up is not thermally
stabilised
Action
Ensure XM environment is between 10 °C - 40 °C
• No action required (this has no effect on metrology)
• Tighten the receiver clamp block
Improve the rigidity of the system mounting
Reposition the unit to avoid the turbulent air or stir the air with a fan
Select long term averaging in Capture
• Perform a number of runs before capturing data for the machine axis
to thermally stabilise
• Ensure the laser/receiver are warmed up as per recommendations
before testing. Specifications - warm up
• If the receiver battery has been replaced, follow the
stabilisation recommendations.
• Avoid excessive handling of the launch/receiver to avoid body heat
exchange
• If using custom mounting parts, ensure they are suitable to avoid
thermal growth
time.
thermal
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