HEIDENHAIN TNC 640 (34059x-05) Cycle programming User Manual

Page 458

Touch Probe Cycles: Automatic Measurement of Workpiece Misalignment

14.4 BASIC ROTATION over two studs (Cycle 402, DIN/ISO: G402)

458

TNC 640 | User's Manual Cycle Programming | 1/2015

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
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 99999
Compensation Q402: Define whether the TNC
should set the measured misalignment as basic
rotation or should align via rotating the rotary table:

: Set basic rotation

: Rotate the rotary table

If you specify rotating the rotary table, the TNC
does not save the measured misalignment, even if
you have defined a table row in parameter

Q305.

Set to zero after alignment Q337: Define whether
the TNC should set the angle of the aligned rotary
axis to 0 in the preset table or in the datum table
after the alignment:

: Do not set the angle of the rotary axis to 0 in the

table after alignment

: Set the angle of the rotary axis to 0 in the table

after alignment. The TNC sets the display to 0 only if
you have defined

Q402=1.