HEIDENHAIN TNC 320 (34055x-06) Cycle programming User Manual
Page 279
Compensating workpiece misalignment by rotating the C axis
(Cycle 405, DIN/ISO: G405)
14.7
14
TNC 320 | User's Manual Cycle Programming | 5/2013
279
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°. Input range -120.000 to 120.000
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. Input range
-99999.9999 to 99999.9999
Set-up clearance Q320 (incremental): Additional
distance between measuring point and ball tip.
Q320 is added to
SET_UP (touch probe table). Input
range 0 to 99999.9999
Clearance height Q260 (absolute): Coordinate in
the touch probe axis at which no collision between
touch probe and workpiece (fixtures) can occur.
Input range -99999.9999 to 99999.9999
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
Set to zero after alignment Q337: definition of
whether the TNC should set the display of the C-
axis to zero, or write the angular misalignment in
column C of the datum table:
0
: Set the display of the C-axis to zero
>0
: Write the measured angular misalignment
with correct algebraic signs in the datum table.
Line number = value of Q337. If a C-axis shift is
registered in the datum table, the TNC adds the
measured angular misalignment.
NC blocks
5 TCH PROBE 405 ROT IN C AXIS
Q321=+50
;CENTER IN 1ST AXIS
Q322=+50
;CENTER IN 2ND AXIS
Q262=10
;NOMINAL DIAMETER
Q325=+0
;STARTING ANGLE
Q247=90
;STEPPING ANGLE
Q261=-5
;MEASURING HEIGHT
Q320=0
;SET-UP CLEARANCE
Q260=+20
;CLEARANCE HEIGHT
Q301=0
;MOVE TO CLEARANCE
Q337=0
;ZERO RESET