3. BASIC OPERATIONS
3.2.8 Datum setting, centering and measuring with the touch signal probe
(Possible only when the AT100 series is connected.)
1) Datum setting with the touch signal probe
The KA counter can be connected to a touch signal probe (optional), and it is possible
to set the datum point for a workpiece.
• Setting up the datum point in the X-axis direction of the workpiece.
Step 1 Preset the radius of the ball tip of the touch signal probe in the X-axis of the
counter as shown below. With this setup, when the touch signal probe comes in
contact with the surface of the workpiece, the counter starts counting from the
value of the radius of the ball tip.
In the following explanation, the probe ball tip diameter is set to φ10mm and the
center of the ball is on the minus count side of the datum surface to be
determined. Because of this a minus sign is given to the preset value.
IMPORTANT
For datum setting with the touch signal probe, the radius of the ball tip must be preset in
the counter for offsetting. The sign (+/-) for this offset value depends on the count
direction in which the machine moves.
Step 2 Bring the touch signal probe into contact with the reference surface of the
workpiece. This will set the datum point for machining.
A buzzer will sound when the probe is brought into contact with the workpiece,
and counting will start.
2) Centering with the touch signal probe
It is possible to perform centering of the workpiece with a touch signal probe (optional)
connected to the counter.
No. 99MBE032A
3-13
