HEIDENHAIN TNC 360 User Manual - Manual (Page 147)

7-13 TNC 360
7 Programming with Q Parameters
7.7 Measuring with the 3D Touch Probe During Program Run
Example for exercise: Measuring the height of an island on a workpiece
Coordinates for pre-positioning the 3D touch
probe
Touch point 1: X = + 20 mm (Q11)
Y =
50 mm (Q12)
Z = 10 mm (Q13)
Touch point 2: X = + 50 mm (Q21)
Y =
10 mm (Q22)
Z = 0 mm (Q23)
Part program:
0 BEGIN PGM 3600717 MM
1 FN0: Q11 = + 20
2 FN0: Q12 = + 50
3 FN0: Q13 = + 10
4 FN0: Q21 = + 50
5 FN0: Q22 = + 10
6 FN0: Q23 = + 0
7 TOOL CALL 0 Z
8 L Z+100 R0 FMAX M6 ....................................... Insert touch probe
9 TCH PROBE 0.0 REF.PLANE Q10 Z–
10 TCH PROBE 0.1 X+Q11 Y+Q12 Z+Q13 ............. The Z coordinate probed in the negative direction is stored in
Q10 (1st point)
11 L X+Q21 Y+Q22 ................................................. Auxiliary point for second pre-positioning
12 TCH PROBE 0.0 REF.PLANE Q20 Z–
13 TCH PROBE 0.1 X+Q21 Y+Q22 Z+Q23 ............. The Z coordinate probed in the negative direction is stored in
Q20 (2nd point)
14 FN2: Q1 = Q20–Q10 .......................................... Measure the height of the island and assign to Q1
15 STOP .................................................................. Q1 can be checked after the program run has been stopped
(see page 7-14)
16 L Z+100 R0 FMAX M2
17 END PGM 3600717 MM .................................... Retract the tool and end the program
Y
X
Z
1
2
Begin the program; assign the coordinates for pre-
positioning the touch probe