Find Stud In C Face G782 - HEIDENHAIN CNC PILOT 640 User Manual

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Find stud in C face G782

Cycle G782 probes the workpiece face several times with the
Z axis. Prior to each probing, the C axis is rotated by a distance
defined in the cycle until a stud is found. Optionally, the cycle
determines the mean value by two probing operations on the stud
diameter.
If the tolerance value defined in the cycle is exceeded, the cycle
saves the measured deviation as zero point shift. The result of the
measurement is saved additionally in the variable #i99.
Result #i99 Meaning
< 999997 Result of first measurement
999999 Deviation of probing operations was higher than
programmed in parameter Max. deviation WE
–999999 Stud was not found.
Cycle run: From the current position the touch probe moves
along the measuring axis X toward the measuring point. When
the stylus touches the workpiece, the measured value is saved
and the touch probe is positioned back to the starting point. Then
the cycle rotates the C axis by the angle defined in the parameter
Search grid Ci RC and probes again with the X axis. This process
is repeated until a stud is found. The cycle performs two probing
operations on the stud diameter with the C axis, calculates the
center of the stud and places the datum in the C axis.
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: Type of datum shift
1: Table and G152 – activate datum shift and additionally save
in datum table (the datum shift also remains active after the
program run)
2: Activate datum shift with G152 for the further program run
(datum shift no longer active after program run)
D: Result:
1: Position—set zero point without determining the stud
center. The stud diameter is not probed.
2: Object center—before the zero point is set, determine
stud center in two probing operations with the C axis.
K: Incr. meas path Z with Ri. (the algebraic sign determines the
probing direction) – maximum measuring path for probing
C: Starting position C – position of the C axis for the first
probing operation
RC: Search grid Ci – stepping angle of the C axis for the
subsequent probing operations
A: Number of points – maximum number of probing operations
552
Touch probe cycles | Search cycles
HEIDENHAIN | User's Manual smart.Turn and DIN Programming | 12/2017