HEIDENHAIN TNC 320 (340 55x-03) Touch Probe Cycles - Manual (Page 115)

HEIDENHAIN TNC 320 115
3.3 A
u
to
matic W
o
rk
piece Measur
ement
8 Center in 1st axis Q273 (absolute value): Center of
the hole in the reference axis of the working plane.
8 Center in 2nd axis Q274 (absolute value): Center of
the hole in the minor axis of the working plane.
8 Nominal diameter Q262: Enter the diameter of the
hole.
8 Starting angle Q325 (absolute): Angle between the
reference axis of the working plane and the first touch
point.
8 Stepping angle Q247 (incremental): Angle between
two measuring points. The algebraic sign of the
stepping angle determines the direction of rotation
(negative = clockwise). If you wish to probe a circular
arc instead of a complete circle, then program the
stepping angle to be less than 90°.
8 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.
8 Setup clearance Q320 (incremental): Additional
distance between measuring point and ball tip. Q320
is added to column SET_UP.
8 Clearance height Q260 (absolute): Coordinate in the
touch probe axis at which no collision between tool
and workpiece (fixtures) can occur.
8 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
8 Maximum dimension of size for hole Q275:
Maximum permissible dimension for the hole (circular
pocket).
8 Minimum dimension for hole Q276: Minimum
permissible dimension for the hole (circular pocket).
8 Tolerance value for center 1st axis Q279:
Permissible position deviation in the reference axis of
the working plane.
8 Tolerance value for center 2nd axis Q280:
Permissible position deviation in the minor axis of the
working plane.
X
Y
Q274 ±Q280
Q273 ±Q279
Q27
6 Q325
Q247
Q262 Q275
MP6140
+
Q320
X
Z
Q261
Q260
The smaller the angle, the less accurately the TNC can
calculate the hole dimensions. Minimum input value: 5°.