HEIDENHAIN TNC 407 (280 580) ISO Programming - Manual (Page 79)

TNC 426/TNC 425/TNC 415 B/TNC 407 2 - 1 8
2 Manual Operation and Setup
.
.
.
0
ENT e.g.
END
0
ENT
1 e.g.
or
I
2.5 Setting the Datum with a 3D Touch Probe
DATUM
Enter the first coordinate of the datum (for example, in the X axis).
Select the second coordinate.
DATUM
Enter the second coordinate of the datum (for example, in the Y
axis).
Terminate the probing function.
Fig. 2.17: Probing the outside of a cylindrical
surface to find the center
Y
X
X–
X+
Y+
Y– 3
1
2
4
Outside circle
Move the touch probe to the starting position near the first touch point (1) outside of the circle.
X + X – Y + Y –
Select the probing direction.
Probe the workpiece.
Repeat the probing process for points 2, 3 and 4 (see illustration).
Enter the coordinates of the datum.
After the probing procedure is completed, the TNC displays the
coordinates of the circle center and the circle radius PR.