Angular Measurement; Angular Measurmnt G787 - HEIDENHAIN CNC PILOT 640 User Manual

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5.8

Angular measurement

Angular measurmnt G787

Cycle G787 probes twice in the programmed direction and
computes the angle. If the tolerance value defined in the cycle
is exceeded, the cycle saves the measured deviation for a
subsequent misalignment compensation. Program Cycle G788 next
in order to activate the misalignment compensation. The result of
the measurement is saved additionally in the variable #i99.
Further information:
Page 521
Cycle run: From the current position the touch probe moves along
the defined measuring axis toward the measuring point. When the
stylus touches the workpiece, the measured value is saved and the
touch probe is retracted. Then the touch probe is pre-positioned for
the second measurement and the workpiece is probed.
The control outputs an error message if the touch probe does
not reach any touch point within the defined measuring path.
If a Max. deviation WE was programmed, the measuring point
is approached twice and the mean value is saved as result. If
the difference of the measurements is greater than the Max.
deviation WE, the program run is interrupted and an error message
is displayed.
Parameters:
R: Evaluation
1: Prepare tool compensation and misalignment
compensation
2: Prepare misalignment compensation
3: Angle output
D: Directions
0: X measurement, Z offset
1: Y measurement Z offset
2: Z measurement, X offset
3: Y measurement, X offset
4: Z measurement, Y offset
5: X measurement, Y offset
K: Measuring path (the algebraic sign determines the probing
direction) – maximum measuring path for probing
WS: Pos. of 1st measurement
WC: Pos. of 2nd measurement
AC: Nominal angle of measured surface
BE: Tolerance of angle +/ – measurement result range (in
degrees) in which no compensation is applied
RC: -Target pos., 1st measmnt. – nominal value of first
measuring point
BD: Tol., 1st measurement +/ – measurement result range in
which no compensation is applied
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"Touch probe cycles for automatic mode",
Touch probe cycles | Angular measurement
HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017