Touch Probe Cycles: Automatic Datum Setting
14.13 DATUM IN ONE AXIS (Cycle 419, DIN/ISO: G419)
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HEIDENHAIN | TNC 320 | User’s manual for cycle programming | 9/2016
Cycle parameters
Q263 1st measuring point in 1st axis? (absolute):
Coordinate of the first touch point in the reference
axis of the working plane. Input range -99999.9999
to 99999.9999
Q264 1st measuring point in 2nd axis? (absolute):
Coordinate of the first touch point in the minor axis
of the working plane. Input range -99999.9999 to
99999.9999
Q261 Measuring height in probe axis? (absolute):
Coordinate of the ball tip center (= touch point) in
the touch probe axis in which the measurement is
to be made. Input range -99999.9999 to 99999.9999
Q320 Set-up clearance? (incremental): Additional
distance between measuring point and ball tip.
Q320 is added to SET_UP in the touch probe table.
Input range 0 to 99999.9999
Q260 Clearance height? (absolute): coordinate in
the touch probe axis at which no collision between
tool and workpiece (fixtures) can occur. Input range
-99999.9999 to 99999.9999
Q272 Meas. axis (1/2/3, 1=ref. axis)?: Axis in
which the measurement is to be made:
1: Principal axis = measuring axis
2: Secondary axis = measuring axis
3: Touch probe axis = measuring axis
Axis assignment
Active touch probe
axis: Q272= 3
Corresponding
reference axis:
Q272= 1
Corresponding
minor axis:
Q272= 2
Z X Y
Y Z X
X Y Z
Q267 Trav. direction 1 (+1=+ / -1=-)?: Direction in
which the probe is to approach the workpiece:
–1: Negative Traverse direction
+1: Positive traverse direction
Q305 Number in table?: Enter the number in the
datum/preset table in which the TNC is to save
the coordinate. If Q303=1: If you enter Q305=0,
the TNC automatically sets the display so that the
new datum is on the probed surface. If Q303=0: If
you enter Q305=0, the TNC writes to line 0 of the
datum table. Input range 0 to 99999
NC blocks
5 TCH PROBE 419 DATUM IN ONE AXIS
Q263=+25 ;1ST POINT 1ST AXIS
Q264=+25 ;1ST POINT 2ND AXIS
Q261=+25 ;MEASURING HEIGHT
Q320=0 ;SET-UP CLEARANCE
Q260=+50 ;CLEARANCE HEIGHT
Q272=+1 ;MEASURING AXIS
Q267=+1 ;TRAVERSE DIRECTION
Q305=0 ;NUMBER IN TABLE
Q333=+0 ;DATUM
Q303=+1 ;MEAS. VALUE
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