HEIDENHAIN TNC 360 User Manual - Manual (Page 50)

TNC 360 2-12
2 Manual Operation and Setup
Fig. 2.11: Basic rotation of a workpiece, probing procedure for com-
pensation (right). The dashed line is the nominal position;
the angle PA is being compensated.
or
2.4 3D Touch Probe Systems
ENT
TOUCH
PROBE
0 e.g.
ENT
I
I
PA
A B
2
1
Compensating workpiece misalignment
The TNC electronically compensates workpiece
misalignment by computing a “basic rotation.”
Set the ROTATION ANGLE to the angle at which a
workpiece surface should be oriented with respect
to the angle reference axis (see p. 1-12).
SURFACE = DATUM
Select the BASIC ROTATION probe function.
BASIC ROTATION
X+ X- Y+ Y–
ROTATION ANGLE =
Enter the nominal value of the rotation angle.
Move the ball tip to a starting position A near the first touch point 1 .
X + X – Y + Y –
Select the probe direction.
Probe the workpiece.
Move the ball tip to a starting position
B
near the second touch point
2
.
Probe the workpiece.
A basic rotation is kept in non-volatile storage and is effective for all
subsequent program runs and graphic simulations.