HEIDENHAIN TNC 426B (280 472) Touch Probe Cycles - Manual (Page 127)

HEIDENHAIN TNC 426, TNC 430 115
4.2 A
v
ailable Cy
cles
Define cycle
U U U U Measure tool=0 / Check tool=1 : Select whether the
tool is to be measured for the first time or whether a
tool that has already been measured is to be
inspected. If the tool is being measured for the first
time, the TNC overwrites the tool length L in the
central tool file TOOL.T by the delta value DL = 0. If
you wish to inspect a tool, the TNC compares the
measured length with the tool length L that is stored
in TOOL.T. It then calculates the positive or negative
deviation from the stored value and enters it into
TOOL.T as the delta value DL. The deviation can also
be used for Q parameter Q115. If the delta value is
greater than the permissible tool length tolerance for
wear or break detection, the TNC will lock the tool
(status L in TOOL.T).
U U U U Parameter number for result? : Parameter number in
which the TNC stores the status of the
measurement:
0.0: Tool is within the tolerance
1.0: Tool is worn (LTOL exceeded)
2.0: Tool is broken (LBREAK exceeded). If you do not
wish to use the result of measurement within the
program, answer the dialog prompt with NO ENT.
U U U U Clearance height : Enter the position in the spindle
axis at which there is no danger of collision with the
workpiece or fixtures. The clearance height is
referenced to the active workpiece datum. If you
enter such a small clearance height that the tool tip
would lie below the level of the probe contact, the
TNC automatically positions the tool above the level
of the probe contact (safety zone from MP6540)
U U U U Cutter measurement? 0=No / 1=Yes : Choose whether
or not the TNC is to measure the individual teeth.
Example: Measuring a rotating tool for the first
time; old format
6 TOOL CALL 12 Z
7 TCH PROBE 31.0 TOOL LENGTH
8 TCH PROBE 31.1 CHECK: 0
9 TCH PROBE 31.2 HEIGHT: +120
10 TCH PROBE 31.3 PROBING THE TEETH: 0
Example: Inspecting a tool and measuring the
individual teeth and saving the status in Q5; Old
format
6 TOOL CALL 12 Z
7 TCH PROBE 31.0 TOOL LENGTH
8 TCH PROBE 31.1 CHECK: 1 Q5
9 TCH PROBE 31.2 HEIGHT: +120
10 TCH PROBE 31.3 PROBING THE TEETH: 1
Example: NC blocks in new format
6 TOOL CALL 12 Z
7 TCH PROBE 481 TOOL LENGTH
Q340=1 ;CHECK
Q260=+100 ;CLEARANCE HEIGHT
Q341=1 ;PROBING THE TEETH