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www.renishaw.com/xm60
XM-60 and XM-600 multi-axis calibrator
The fourth (diode source) beam is used to measure straightness and roll.
Straightness
The vertical and horizontal straightness error is measured
using a position sensor within the receiver and transmitted
back to the laser via wireless communication.
Roll
Roll measurement is performed optically using a roll
detector inside the receiver. Roll measurements are
absolute between the launch and the receiver.
1
2
3
4
The XM system uses three laser beams (1, 2 and 3) to measure the linear,
pitch and yaw errors using interferometry. The light emitting diode (LED) beam
(4) is used for straightness and roll measurements.
The basic measurement concept is:
Angular
The three interferometric beams provide a linear
measurement of the separation between launch and
receiver. Because the distance between these beams is
known, angular errors of pitch and yaw can be determined
by the system.
Linear
Using the pitch and yaw measurements, the linear error is
determined based on the combination of beams 1, 2 and 3
to calculate the linear error at the position of beam 4.
