Xm Set-Up Best Practice - Renishaw XM-60 multi-axis calibrator User Manual

XM multi-axis calibrator

XM set-up best practice

For relative measurements between the tool and the bed/component, the launch
unit must always be mounted on the bed of the machine.
If the launch unit is mounted
in the spindle, angular errors
can cause errors in the
straightness measurement.
Measurement comparisons
The receiver must always be mounted on centreline of the spindle.
Measurements taken with the launch unit on the bed of
the machine are equivalent to running a dial indicator
along a 'straight edge' mounted to the surface of the bed.
At the point measured
below there is zero height
variation between tool and
bed, but the XM system
would show a deviation
because of the rotation of
the bed.
66