3 a u to matic w o rk piece measur ement – HEIDENHAIN TNC 426B (280 472) Touch Probe Cycles User Manual
Page 103
HEIDENHAIN TNC 426, TNC 430
91
3.3 A
u
to
matic W
o
rk
piece Measur
ement
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Measuring axis
Q272: axis in the working plane in
which the measurement is to be made:
1: Reference axis = measuring axis
2: Minor axis = measuring axis
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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.
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Setup clearance
Q320 (incremental): additional
distance between measuring point and ball tip. Q320
is added to MP6140.
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Clearance height
Q260 (absolute): coordinate in the
touch probe axis at which no collision between tool
and workpiece (fixtures) can occur.
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Nominal length
Q311: nominal value of the length to
be measured.
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Maximum dimension
Q288: maximum permissible
length.
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Minimum dimension
Q289: minimum permissible
length
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Measuring log
Q281: definition of whether the TNC is
to create a measuring log:
0: No measuring log
1: Generate measuring log: with the standard setting
the TNC saves the log file TCHPR426.TXT in the
directory in which your measuring program is also
stored.
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PGM stop if tolerance error
Q309: definition of
whether in the event of a violation of tolerance limits
the TNC is to interrupt the program run and output an
error message:
0: Do not interrupt program run, no error message
1: Interrupt program run, output an error message
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Tool number for monitoring
Q330: definition of
whether the TNC is to monitor the tool (see “Tool
monitoring” on page 71)
0: Monitoring not active
>0: Tool number in the tool table TOOL.T
Example: NC blocks
5 TCH PROBE 426 MEASURE RIDGE WIDTH
Q263=+50 ;1ST POINT 1ST AXIS
Q264=+25 ;1ST POINT 2ND AXIS
Q265=+50 ;2ND POINT 1ST AXIS
Q266=+85 ;2ND POINT 2ND AXIS
Q272=2 ;MEASURING AXIS
Q261=-5 ;MEASURING HEIGHT
Q320=0 ;SET-UP CLEARANCE
Q260=+20 ;CLEARANCE HEIGHT
Q311=45 ;NOMINAL LENGTH
Q288=45 ;MAXIMUM DIMENSION
Q289=44.95 ;MINIMUM DIMENSION
Q281=1 ;MEASURING LOG
Q309=0 ;PGM-STOP IF ERROR
Q330=0 ;TOOL NUMBER