HEIDENHAIN TNC 370 - Page 278

9 30 Touch Probes
4
9.3 Measuring Workpieces with a 3D Touch Probe
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 (all)
Y = 50 mm(Q12)
2 = 10 mm (Q13)
Touch point 2: X = +50 mm (021)
Y = 10 mm(Q22)
z = 0 mm (Q23)
Part program:
3 BEGIN PGM 3600717 MM
1
FNO:Qll =+20
7
2
3
4
5
3
7
3
3
10
11
12
13
14
15
16
17
FNO: Q12 = + 50
FNO: 013 = + 10
FNO: Q21 = + 50
FNO: 022 = + 10
FNO: Q23 = + 0
i
Begin the program; assign the coordinates for pre-
positioning the touch probe to Q parameters
TOOL CALL 0 Z
L Z+lOO RO FMAX M6 ..___.......................... Insert touch probe
TCH PROBE 0.0 REF.PLANE QIO Z-
TCH PROBE 0.1 X+Qll Y+Q12 Z+Q13 . . . . . . . . ..The Z coordinate probed in the negative direction is stored in
QIO (1 st point)
L X+021 Y+Q22 Auxiliary point for second pre-positioning
TCH PROBE 0.0 REF.PLANE Q20 Z-
TCH PROBE 0.1 X+Q21 Y+Q22 Z+Q23 . . . . . . . . ..The Z coordinate probed in the negative direction is stored in
020 (2nd point)
FN2: 01 = Q20-QIO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Measure the height of the island and assign to 01
STOP . . . . . .._._............__.........___..........__._.........___.. 01 can be checked after the program run has been stopped
(see page 7-11)
L Z+lOO RO FMAX M2
END PGM 3600717 MM . . ..__._........._................ Retract the tool and end the program
9-20 TNC 370