User's Manual ISO TNC 360 (260020xx, 280490xx) - heidenhain

2 Manual Operation and Setup
2.5 Setting the Datum with the 3D Touch Probe System
2-18
Outside circle
Select the CIRCLE CENTER = DATUM probe function.
Move the touch probe to a starting position near the first touch point 1 outside of the circle.
CIRCLE CENTER = DATUM
X + X – Y + Y –
or
I
Select the probing direction.
Probe the workpiece.
Repeat the probing process for points 2 , 3 and 4 (see Fig. 2.16).
Enter the coordinates of the circle center.
After the probing procedure is completed, the TNC displays the coordinates
of the circle center and the circle radius PR.
Y
3
X+
1
Y+
Y–
X–
Fig. 2.16: Probing an outside cylindrical
surface to find the center
4
2
X
TNC 360