HEIDENHAIN TNC 640 (34059x-01) Cycle programming User Manual
Page 388
388
Touch Probe Cycles: Automatic Measurement of Workpiece Misalignment
15.4 BA
SIC R
O
T
A
TION o
v
er T
w
o
S
tu
ds (Cy
c
le 402, DIN/ISO:
G402)
U
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
U
Preset value for rotation angle
Q307 (absolute): If
the misalignment is to be measured against a straight
line other than the reference axis, enter the angle of
this reference line. The TNC will then calculate the
difference between the value measured and the
angle of the reference line for the basic rotation. Input
range -360.000 to 360.000
U
Preset number in table
Q305: Enter the preset
number in the table in which the TNC is to save the
determined basic rotation. If you enter Q305=0, the
TNC automatically places the determined basic
rotation in the ROT menu of the Manual Operation
mode. The parameter has no effect if the
misalignment is to be compensated by a rotation of
the rotary table (Q402=1). In this case the
misalignment is not saved as an angular value. Input
range 0 to 2999
U
Compensation
Q402: Specify whether the TNC should
compensate the measured misalignment with a basic
rotation, or by rotating the rotary table:
0: Set basic rotation
1: Rotate the rotary table
When you select rotary table, the TNC does not save
the measured misalignment, not even when you have
defined a table line in parameter Q305.
U
Set to zero after alignment
Q337: Definition of
whether the TNC should set the display of the aligned
rotary axis to zero:
0: Do not reset the display of the rotary axis to 0 after
alignment
1: Reset the display of the rotary axis to 0 after
alignment
The TNC sets the display to 0 only if you have defined
Q402=1.
Example: NC blocks
5 TCH PROBE 402 ROT OF 2 STUDS
Q268=-37
;1ST CENTER IN 1ST AXIS
Q269=+12
;1ST CENTER IN 2ND AXIS
Q313=60
;DIAMETER OF STUD 1
Q261=-5
;MEASURING HEIGHT 1
Q270=+75
;2ND CENTER IN 1ST AXIS
Q271=+20
;2ND CENTER IN 2ND AXIS
Q314=60
;DIAMETER OF STUD 2
Q315=-5
;MEASURING HEIGHT 2
Q320=0
;SET-UP CLEARANCE
Q260=+20
;CLEARANCE HEIGHT
Q301=0
;MOVE TO CLEARANCE
Q307=0
;PRESET ROTATION ANG.
Q305=0
;NO. IN TABLE
Q402=0
;COMPENSATION
Q337=0
;SET TO ZERO