HEIDENHAIN iTNC 530 (340 49x-04) Touch Probe Cycles - Manual (Page 86)

86 3 Touch Probe Cycles for Automatic Workpiece Inspection
3.2 Pr
eset
ting aut
o
matically
 Center in 1st axis Q321 (absolute value): Center of
the stud in the reference axis of the working plane.
 Center in 2nd axis Q322 (absolute value): Center of
the stud in the minor axis of the working plane. If you
program Q322 = 0, the TNC aligns the hole center to
the positive Y axis. If you program Q322 not equal to
0, then the TNC aligns the hole center to the nominal
position.
 Nominal diameter Q262: Approximate diameter of the
stud. Enter a value that is more likely to be too large
than too small.
 Starting angle Q325 (absolute): Angle between the
reference axis of the working plane and the first touch
point.
 Stepping angle Q247 (incremental): Angle between
two measuring points. The algebraic sign of the
stepping angle determines the direction of rotation
(negative = clockwise) in which the touch probe
moves to the next measuring point. If you wish to
probe a circular arc instead of a complete circle, then
program the stepping angle to be less than 90°.
 Measuring height in the touch probe axis Q261
(absolute): Coordinate of the ball tip center (= touch
point) in the touch probe axis in which the
measurement is to be made.
 Setup clearance Q320 (incremental): Additional
distance between measuring point and ball tip. Q320
is added to MP6140.
 Clearance height Q260 (absolute): Coordinate in the
touch probe axis at which no collision between tool
and workpiece (fixtures) can occur.
 Traversing to clearance height Q301: Definition of
how the touch probe is to move between the
measuring points:
0: Move at measuring height between measuring
points
1: Move at clearance height between measuring points
 Datum number in table Q305: Enter the datum
number in the table in which the TNC is to save the
coordinates of the pocket center. If you enter
Q305=0, the TNC automatically sets the display so
that the new datum is on the stud center.
X
Y
Q322
Q321
Q262
Q325
Q247
X
Z
Q261
Q260
MP6140
+
Q320
The smaller the angle, the less accurately the TNC can
calculate the datum. Minimum input value: 5°.