9 3D Touch Probes
9.2 Touch Probe Cycles in the MANUAL and ELECTRONIC HANDWHEEL Operating Modes
Compensating workpiece misalignment
The TNC 370 electronically compensates work-
piece misalignment by computing a “basic rota-
tion”.
Set the ROTATION ANGLE to the angle at which
a workpiece surface should be oriented with
respect to the angle reference axis (see page
l-21).
I
Fig. 9.7: Basic rotation of a workpiece, probing procedure for
compensation (right). The dashed line is the nominal
position; the angle PA is being compensated.
3
Select the probe function for compensating workpiece misalignment.
Enter the nominal value of the ROTATION ANGLE.
Move the ball tip to a starting position @ near the first touch point 0.
J
x+ x- Y+ Y-
ooro I
Select the probe direction.
Probe the workpiece
I
J
Move the ball tip to a starting position @ near the second touch point 0.
Probe the workpiece.
A basic rotation is kept in nonvolatile storage and is effective for all
subsequent program runs and graphic test runs.
TNC 370
s-7
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