7-18 (E)
7. Operation Method
LH71A / LH72
7-2-10. Touch Sensor (sold separately) (LH71A only)
• Attach the touch sensor on the main spindle of a milling machine, for example, and use it in combination
with the counter unit.
• The feeler ball of the touch sensor is semi-fixed by a spring and its flexible construction can absorb shock
when pressed against the datum plane, which enables accurate datum point detection without causing a
deflection on the axis.
• The feeler ball, which has been forced aganist the workpiece, returns to the center of the axis when the
workpiece is moved off.
•• Move off the touch sensor immediately from the workpiece when it touches the workpiece.
Do not bring the shaft into contact with the workpiece as doing so will decrease precision and may cause
damage.
• The touch sensor can operate only with an electroconductive workpiece. Check the workpiece material
before use.
Cable
Connector to touch sensor
Connector to counter
unit
Feeler ball
Shank
Machine table
Workpiece
Direction of movement
Feeler (steel ball)
Datum point
Corresponds to tool center
ø10
Touch sensor
Bring it into contact
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