Laser Interferometer XL80
Laser Interferometer
XL80 for Linear Axis Positioning Accuracy and Repeatability Measurement
What is Laser Calibration?
It is the process of measurement and optimization of Positioning Accuracy and Positioning Repeatability of Linear and Rotary axis of CNC machines using
Laser Interferometer.
CNC laser calibrations are essential for maintaining the precision and reliability of your CNC machines. Over time, factors such as wear and tear, temperature changes, and vibrations can cause misalignments, leading to decreased accuracy and product quality. Regular laser calibrations help identify and correct these issues, ensuring your machines produce consistent, high-quality parts. This is particularly crucial in industries such as Defense, Aerospace, Die and Mold, Automotive, and Medical Device Manufacturing, where even the slightest deviations can have significant consequences.
Microcheck also offers measurement of Dynamic Response, Static Response and Thermal Drift by using Laser Interferometer which plays crucial roll in the process of Grinding.
What is Positional Accuracy and Positioning Repeatability?
Positional Accuracy:
The difference in the positional coordinates to which a machine actually moves and the theoretical coordinates.
eg. You have commanded the machine to move to position X = 10.581 mm. When the machine moves, it actually reaches 10.57 mm. so the positional accuracy in this case is difference between actual and theoretical values, i.e. 10.581 – 10.571 = 0.010 mm. Generally, positional accuracy is not calculated by a single measurement. Multiple readings are taken when a machine moves to multiple programmed points and all deviations recorded. The statistical average value all these deviations is the positional accuracy of the measured Axis.
Positioning Repeatability:
It is the reproducibility of the values when the machine is asked to move to a targeted point multiple times in both forward and reverse direction and the difference in various values is the positioning repeatability.
eg. You ask machine axis to move to target point 10.58 mm, 5 times. The actual values to which the machine moves are 10.570, 10.568, 10.571, 10.567 and 10.572 mm. Positioning Repeatability in this case is difference between two extreme positions, i.e. 10.572 – 10.567 = 0.005. In reality, repeatability is calculated using multiple readings over multiple points in a bidirectional way. Positioning Repeatability is more important than Positional Accuracy for consistent results. Positional accuracy and repeatability is measured separately for each individual axes of the machine (X, Y, Z etc.).
What is Dynamic Respose?
It is a measurement of the axis movement in a particuar time against microfeed.
What is Thermal Drift?
It is a measurement of variation in the axis positioning for given test stroke due to the thermal effect.
